ZC706 Quick start
This guide provides quick instructions on how to setup the EVAL-AD6676 on:
ZC706 The revision that is supported is 1.2 or higher.
Using Linux as software
Necessary files
Note
The SD card includes several folders in the root directory of the BOOT partition. In order to configure the SD card to work with a specific FPGA board and ADI hardware, several files must be copied onto the root directory. Using the host PC, drag and drop the required files onto the BOOT partition, and use the EJECT function when removing the SD card from the reader.
The following files are needed for the system to boot:
HDL boot image:
BOOT.binLinux Kernel image:
uImageLinux device tree:
devicetree.dtb
They can either be taken from the SD card – already generated by us, or you can build them manually:
Instructions on how to choose the boot files from the SD card can be found in the Platform-Specific Manual Steps section from here Hardware Configuration.
Instructions on how to manually build the boot files from source can be found here:
AD6676EVB HDL project build documentation. More HDL build details at Build an HDL project.
Important
Some projects provide multiple devicetree files in the SD card’s boot folders. Make sure you select the devicetree that matches your specific use case.
Required software
SD Card 16GB imaged with Kuiper
A UART terminal (Putty/Tera Term/Minicom, etc.) with baud rate 115200 (8N1)
Required hardware
ZC706 Rev 1.2 or later board and its power supply
EVAL-AD6676 FMC board
SD card with at least 16GB of memory
Mini-USB cable
Ethernet cable
Hardware for setting VADJ to 2.5V
Signal generator
Signal synthesizer (required only if using external clock source)
1x SMA cable for signal generator
1x SMA cable for signal synthesizer (if using external clock)
(Optional) USB keyboard & mouse and a HDMI compatible monitor
More details as to why you need these, can be found at Prerequisites.
Testing
Creating the setup
All the products described on this page include ESD (electrostatic discharge) sensitive devices. Electrostatic charges as high as 4000V readily accumulate on the human body or test equipment and can discharge without detection. Although the boards feature ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. This includes removing static charge on external equipment, cables, or antennas before connecting to the device.
Warning
Before executing below steps, VADJ must be set to 2.5V. Instructions for reprogramming the VADJ on the ZC706 can be found in the Xilinx support article.
Follow the steps in this order, to avoid damaging the components:
Connect the EVAL-AD6676 FMC board to the FPGA carrier HPC FMC socket (J37).
On the FMC card, choose between the available CLKIN sources:
On-board 200 MHz XO (default) — R95 and R100 installed
External clock via J5 — remove R95 and R100
On the FMC card, choose between the available clock routing options:
PECL comparator (default) — C35, C47, C48 installed (C38, C45, C46 uninstalled); CLKIN is routed through a PECL-output comparator that drives the AD6676 clock inputs
Direct RF via ceramic balun — install C38, C45, C46 and remove C35, C47, C48
Connect USB UART (Mini-USB) to your host PC (J21).
Insert SD card into socket (J30).
Configure ZC706 for SD BOOT (SW11: 1-Down, 2-Down, 3-Up, 4-Up, 5-Down).
Plug the Power Supply into 12V Power input connector (J22)
Turn on the power switch on the FPGA board.
Observe kernel and serial console messages on your terminal.
You can also connect a monitor, keyboard and mouse directly to the board for a local connection. The UART connection is still recommended for debugging purposes. For the local connection, follow these additional steps:
Plug your HDMI display device into the HDMI Video Connector (P1).
Plug your USB mouse/keyboard into the USB 2.0 ULPI Controller, w/ Micro-B Connector (J49). You will have to use a USB hub to connect both mouse and keyboard. Some keyboards have a mouse or touch pad sharing the same USB connection or wireless dongle. This can be used to eliminate the use of a USB hub.
Wait another ~30 seconds for the HDMI display device to start showing signs of life.
Note
The USB 2.0 circuit requires specific jumper settings for OTG mode. Ensure the following jumper settings on the ZC706 board (these are the defaults; verify them if USB is not working):
Shunt J10
J11 → open (no shunt)
J48 → Shunt pins 2–3
J49 → Shunt pins 1–2
J50 → Shunt pins 1–2
J51 → Shunt pins 1–2
See also
For more detailed information on ZC706 switch configuration, check the ZC706 Hardware User Guide (chapter “Device Configuration”) here.
Boot messages
The following is what is printed in the serial console, after you have connected to the proper ttyUSB or COM port:
Note
If you are using a local connection (keyboard, mouse, monitor), you can
view the boot log by opening a terminal and running the dmesg command.
U-Boot 2018.01-21442-gf06dec3cab (Oct 17 2024 - 08:58:28 +0300) Xilinx Zynq ZC706, Build: jenkins-development-build_uboot-35
Model: Zynq ZC706 Development Board
Board: Xilinx Zynq
Silicon: v3.1
I2C: ready
DRAM: ECC disabled 1 GiB
MMC: sdhci@e0100000: 0 (SD)
SF: Detected s25fl128s_64k with page size 512 Bytes, erase size 128 KiB, total 32 MiB
In: serial@e0001000
Out: serial@e0001000
Err: serial@e0001000
Net: ZYNQ GEM: e000b000, phyaddr 7, interface rgmii-id
eth0: ethernet@e000b000
reading uEnv.txt
407 bytes read in 25 ms (15.6 KiB/s)
Importing environment from SD ...
Hit any key to stop autoboot: 0
Device: sdhci@e0100000
Manufacturer ID: 3
OEM: 5344
Name: SS16G
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 14.8 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
reading uEnv.txt
407 bytes read in 24 ms (15.6 KiB/s)
Loaded environment from uEnv.txt
Importing environment from SD ...
Running uenvcmd ...
Copying Linux from SD to RAM...
reading uImage
8412448 bytes read in 486 ms (16.5 MiB/s)
reading devicetree.dtb
22225 bytes read in 33 ms (657.2 KiB/s)
** Unable to read file uramdisk.image.gz **
## Booting kernel from Legacy Image at 03000000 ...
Image Name: Linux-6.1.70-284114-g2e8908932df
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 8412384 Bytes = 8 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 02a00000
Booting using the fdt blob at 0x2a00000
Loading Kernel Image ... OK
Loading Device Tree to 1fff7000, end 1ffff6d0 ... OK
Starting kernel ...
Booting Linux on physical CPU 0x0
Linux version 6.1.70-284114-g2e8908932dfd (jenkins@romlxbuild1) (arm-xilinx-linux-gnueabi-gcc.real (GCC) 12.2.0, GNU ld (GNU Binutils) 2.39.0.20220819) #1060 SMP PREEMPT Tue Mar 18 16:11:24 EET 2025
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
OF: fdt: Machine model: Xilinx Zynq ZC706
OF: fdt: earlycon: stdout-path /amba@0/uart@E0001000 not found
Memory policy: Data cache writealloc
cma: Reserved 128 MiB at 0x38000000
Zone ranges:
Normal [mem 0x0000000000000000-0x000000002fffffff]
HighMem [mem 0x0000000030000000-0x000000003fffffff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000000000-0x000000003fffffff]
Initmem setup node 0 [mem 0x0000000000000000-0x000000003fffffff]
percpu: Embedded 11 pages/cpu s14420 r8192 d22444 u45056
Built 1 zonelists, mobility grouping on. Total pages: 260608
Kernel command line: console=ttyPS0,115200 root=/dev/mmcblk0p2 rw earlycon rootfstype=ext4 rootwait clk_ignore_unused cpuidle.off=1
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
mem auto-init: stack:all(zero), heap alloc:off, heap free:off
Memory: 881952K/1048576K available (12288K kernel code, 818K rwdata, 10376K rodata, 1024K init, 470K bss, 35552K reserved, 131072K cma-reserved, 131072K highmem)
rcu: Preemptible hierarchical RCU implementation.
rcu: RCU event tracing is enabled.
rcu: RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
efuse mapped to (ptrval)
slcr mapped to (ptrval)
L2C: platform modifies aux control register: 0x72360000 -> 0x72760000
L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 ID prefetch enabled, offset 1 lines
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 8 ways, 512 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76760001
rcu: srcu_init: Setting srcu_struct sizes based on contention.
zynq_clock_init: clkc starts at (ptrval)
Zynq clock init
sched_clock: 64 bits at 167MHz, resolution 6ns, wraps every 4398046511103ns
clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0x26703d7dd8, max_idle_ns: 440795208065 ns
Switching to timer-based delay loop, resolution 6ns
clocksource: ttc_clocksource: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 537538477 ns
timer #0 at (ptrval), irq=25
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 333.33 BogoMIPS (lpj=1666666)
CPU: Testing write buffer coherency: ok
CPU0: Spectre v2: using BPIALL workaround
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x100000 - 0x100060
rcu: Hierarchical SRCU implementation.
rcu: Max phase no-delay instances is 1000.
smp: Bringing up secondary CPUs ...
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
CPU1: Spectre v2: using BPIALL workaround
smp: Brought up 1 node, 2 CPUs
SMP: Total of 2 processors activated (666.66 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
futex hash table entries: 512 (order: 3, 32768 bytes, linear)
pinctrl core: initialized pinctrl subsystem
NET: Registered PF_NETLINK/PF_ROUTE protocol family
DMA: preallocated 256 KiB pool for atomic coherent allocations
thermal_sys: Registered thermal governor 'step_wise'
platform axi: Fixed dependency cycle(s) with /axi/interrupt-controller@f8f01000
amba f8801000.etb: Fixed dependency cycle(s) with /replicator/out-ports/port@1/endpoint
amba f8803000.tpiu: Fixed dependency cycle(s) with /replicator/out-ports/port@0/endpoint
amba f8804000.funnel: Fixed dependency cycle(s) with /replicator/in-ports/port/endpoint
amba f889c000.ptm: Fixed dependency cycle(s) with /axi/funnel@f8804000/in-ports/port@0/endpoint
amba f889d000.ptm: Fixed dependency cycle(s) with /axi/funnel@f8804000/in-ports/port@1/endpoint
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
e0001000.serial: ttyPS0 at MMIO 0xe0001000 (irq = 27, base_baud = 3125000) is a xuartps
printk: console [ttyPS0] enabled
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
mc: Linux media interface: v0.10
videodev: Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
jesd204: found 0 devices and 0 topologies
FPGA manager framework
Advanced Linux Sound Architecture Driver Initialized.
clocksource: Switched to clocksource arm_global_timer
NET: Registered PF_INET protocol family
IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear)
tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
TCP bind hash table entries: 8192 (order: 5, 131072 bytes, linear)
TCP: Hash tables configured (established 8192 bind 8192)
UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
NET: Registered PF_UNIX/PF_LOCAL protocol family
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
armv7-pmu f8891000.pmu: hw perfevents: no interrupt-affinity property, guessing.
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
workingset: timestamp_bits=30 max_order=18 bucket_order=0
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
fuse: init (API version 7.37)
bounce: pool size: 64 pages
io scheduler mq-deadline registered
io scheduler kyber registered
zynq-pinctrl 700.pinctrl: zynq pinctrl initialized
gpio-1008 (sysref-enable): hogged as output/high
dma-pl330 f8003000.dma-controller: Loaded driver for PL330 DMAC-241330
dma-pl330 f8003000.dma-controller: DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
brd: module loaded
loop: module loaded
Registered mathworks_ip class
SPI driver spidev has no spi_device_id for adi,swspi
spi-nor spi1.0: found s25fl128s1, expected n25q128a11
spi-nor spi1.0: s25fl128s1 (16384 Kbytes)
5 fixed-partitions partitions found on MTD device spi1.0
Creating 5 MTD partitions on "spi1.0":
0x000000000000-0x000000500000 : "boot"
0x000000500000-0x000000520000 : "bootenv"
0x000000520000-0x000000540000 : "config"
0x000000540000-0x000000fc0000 : "image"
0x000000fc0000-0x000001000000 : "spare"
MACsec IEEE 802.1AE
tun: Universal TUN/TAP device driver, 1.6
macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 44 (00:0a:35:00:01:22)
usbcore: registered new interface driver asix
usbcore: registered new interface driver ax88179_178a
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver net1080
usbcore: registered new interface driver cdc_subset
usbcore: registered new interface driver zaurus
usbcore: registered new interface driver cdc_ncm
usbcore: registered new interface driver r8153_ecm
usbcore: registered new interface driver uas
usbcore: registered new interface driver usb-storage
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial support registered for generic
usbcore: registered new interface driver ftdi_sio
usbserial: USB Serial support registered for FTDI USB Serial Device
usbcore: registered new interface driver upd78f0730
usbserial: USB Serial support registered for upd78f0730
ULPI transceiver vendor/product ID 0x0424/0x0007
Found SMSC USB3320 ULPI transceiver.
ULPI integrity check: passed.
ci_hdrc ci_hdrc.0: EHCI Host Controller
ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.01
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 6.1.70-284114-g2e8908932dfd ehci_hcd
usb usb1: SerialNumber: ci_hdrc.0
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
SPI driver ads7846 has no spi_device_id for ti,tsc2046
SPI driver ads7846 has no spi_device_id for ti,ads7843
SPI driver ads7846 has no spi_device_id for ti,ads7845
SPI driver ads7846 has no spi_device_id for ti,ads7873
i2c_dev: i2c /dev entries driver
si570 1-005d: registered, current frequency 156250000 Hz
i2c i2c-0: Added multiplexed i2c bus 1
i2c 2-0039: Fixed dependency cycle(s) with /fpga-axi@0/axi_hdmi@70e00000/port/endpoint
adv7511 2-0039: supply avdd not found, using dummy regulator
adv7511 2-0039: supply dvdd not found, using dummy regulator
adv7511 2-0039: supply pvdd not found, using dummy regulator
adv7511 2-0039: supply bgvdd not found, using dummy regulator
adv7511 2-0039: supply dvdd-3v not found, using dummy regulator
adv7511: probe of 2-0039 failed with error -5
i2c i2c-0: Added multiplexed i2c bus 2
at24 3-0054: supply vcc not found, using dummy regulator
at24 3-0054: 1024 byte 24c08 EEPROM, writable, 1 bytes/write
i2c i2c-0: Added multiplexed i2c bus 3
pca953x 4-0021: supply vcc not found, using dummy regulator
pca953x 4-0021: using no AI
i2c i2c-0: Added multiplexed i2c bus 4
rtc rtc0: invalid alarm value: 2026-04-29T35:84:00
rtc-pcf8563 5-0051: registered as rtc0
rtc-pcf8563 5-0051: setting system clock to 2026-04-29T09:30:53 UTC (1777455053)
i2c i2c-0: Added multiplexed i2c bus 5
at24 6-0050: supply vcc not found, using dummy regulator
at24 6-0050: 256 byte 24c02 EEPROM, writable, 1 bytes/write
i2c i2c-0: Added multiplexed i2c bus 6
i2c i2c-0: Added multiplexed i2c bus 7
i2c i2c-0: Added multiplexed i2c bus 8
pca954x 0-0074: registered 8 multiplexed busses for I2C switch pca9548
gspca_main: v2.14.0 registered
usbcore: registered new interface driver uvcvideo
cdns-wdt f8005000.watchdog: Xilinx Watchdog Timer with timeout 10s
Xilinx Zynq CpuIdle Driver started
failed to register cpuidle driver
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
ledtrig-cpu: registered to indicate activity on CPUs
hid: raw HID events driver (C) Jiri Kosina
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
SPI driver fb_seps525 has no spi_device_id for syncoam,seps525
mmc0: SDHCI controller on e0100000.mmc [e0100000.mmc] using ADMA
SPI driver adis16475 has no spi_device_id for adi,adis16470
SPI driver adis16475 has no spi_device_id for adi,adis16475-1
SPI driver adis16475 has no spi_device_id for adi,adis16475-2
SPI driver adis16475 has no spi_device_id for adi,adis16475-3
SPI driver adis16475 has no spi_device_id for adi,adis16477-1
SPI driver adis16475 has no spi_device_id for adi,adis16477-2
SPI driver adis16475 has no spi_device_id for adi,adis16477-3
SPI driver adis16475 has no spi_device_id for adi,adis16465-1
SPI driver adis16475 has no spi_device_id for adi,adis16465-2
mmc0: new high speed SDHC card at address e624
SPI driver adis16475 has no spi_device_id for adi,adis16465-3
SPI driver adis16475 has no spi_device_id for adi,adis16467-1
SPI driver adis16475 has no spi_device_id for adi,adis16467-2
mmcblk0: mmc0:e624 SS16G 14.8 GiB
SPI driver adis16475 has no spi_device_id for adi,adis16467-3
SPI driver adis16475 has no spi_device_id for adi,adis16500
SPI driver adis16475 has no spi_device_id for adi,adis16501
SPI driver adis16475 has no spi_device_id for adi,adis16505-1
mmcblk0: p1 p2 p3
SPI driver adis16475 has no spi_device_id for adi,adis16505-2
SPI driver adis16475 has no spi_device_id for adi,adis16505-3
SPI driver adis16475 has no spi_device_id for adi,adis16507-1
SPI driver adis16475 has no spi_device_id for adi,adis16507-2
SPI driver adis16475 has no spi_device_id for adi,adis16507-3
SPI driver adis16475 has no spi_device_id for adi,adis16575-2
SPI driver adis16475 has no spi_device_id for adi,adis16575-3
SPI driver adis16475 has no spi_device_id for adi,adis16576-2
SPI driver adis16475 has no spi_device_id for adi,adis16576-3
SPI driver adis16475 has no spi_device_id for adi,adis16577-2
SPI driver adis16475 has no spi_device_id for adi,adis16577-3
axi_adxcvr_drv 44a60000.axi-adxcvr-rx: AXI-ADXCVR-RX (17.05.a) using CPLL on GTX2 at 0x44A60000. Number of lanes: 2.
axi-jesd204-rx 44aa0000.axi-jesd204-rx: AXI-JESD204-RX (1.07.a) at 0x44AA0000. Encoder 8b10b, width 4/4, lanes 2.
axi_sysid 45000000.axi-sysid-0: AXI System ID core version (1.01.a) found
axi_sysid 45000000.axi-sysid-0: [ad6676evb] [RX:L=2] on [zc706] git branch <hdl_2023_r2> git <2156ac7e874a1dc321d9f64a325009fafe563419> clean [2024-11-01 18:43:51] UTC
fpga_manager fpga0: Xilinx Zynq FPGA Manager registered
usbcore: registered new interface driver snd-usb-audio
NET: Registered PF_INET6 protocol family
Segment Routing with IPv6
In-situ OAM (IOAM) with IPv6
sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
NET: Registered PF_PACKET protocol family
NET: Registered PF_IEEE802154 protocol family
Key type dns_resolver registered
zynq_pm_remap_ocm: OCM pool is not available
zynq_pm_suspend_init: Unable to map OCM.
Registering SWP/SWPB emulation handler
of-fpga-region fpga-full: FPGA Region probed
cf_axi_adc 44a10000.axi-ad6676-hpc: ADI AIM (10.03.) at 0x44A10000 mapped to 0x(ptrval) probed ADC AD6676 as MASTER
input: gpio_keys as /devices/soc0/gpio_keys/input/input0
of_cfs_init
of_cfs_init: OK
clk: Not disabling unused clocks
ALSA device list:
No soundcards found.
EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Quota mode: disabled.
VFS: Mounted root (ext4 filesystem) on device 179:2.
devtmpfs: mounted
Freeing unused kernel image (initmem) memory: 1024K
Run /sbin/init as init process
systemd[1]: systemd 247.3-7+rpi1+deb11u6 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified)
systemd[1]: Detected architecture arm.
Welcome to Kuiper GNU/Linux 11.2 (bullseye)!
systemd[1]: Set hostname to <analog>.
systemd[1]: /lib/systemd/system/plymouth-start.service:16: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
systemd[1]: Queued start job for default target Graphical Interface.
random: crng init done
systemd[1]: system-getty.slice: unit configures an IP firewall, but the local system does not support BPF/cgroup firewalling.
systemd[1]: (This warning is only shown for the first unit using IP firewalling.)
systemd[1]: Created slice system-getty.slice.
[ OK ] Created slice system-getty.slice.
systemd[1]: Created slice system-modprobe.slice.
[ OK ] Created slice system-modprobe.slice.
systemd[1]: Created slice system-serial\x2dgetty.slice.
[ OK ] Created slice system-serial\x2dgetty.slice.
systemd[1]: Created slice system-systemd\x2dfsck.slice.
[ OK ] Created slice system-systemd\x2dfsck.slice.
systemd[1]: Created slice User and Session Slice.
[ OK ] Created slice User and Session Slice.
systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ OK ] Started Forward Password R…uests to Wall Directory Watch.
systemd[1]: Condition check resulted in Arbitrary Executable File Formats File System Automount Point being skipped.
systemd[1]: Reached target Slices.
[ OK ] Reached target Slices.
systemd[1]: Reached target Swap.
[ OK ] Reached target Swap.
systemd[1]: Listening on Syslog Socket.
[ OK ] Listening on Syslog Socket.
systemd[1]: Listening on fsck to fsckd communication Socket.
[ OK ] Listening on fsck to fsckd communication Socket.
systemd[1]: Listening on initctl Compatibility Named Pipe.
[ OK ] Listening on initctl Compatibility Named Pipe.
systemd[1]: Condition check resulted in Journal Audit Socket being skipped.
systemd[1]: Listening on Journal Socket (/dev/log).
[ OK ] Listening on Journal Socket (/dev/log).
systemd[1]: Listening on Journal Socket.
[ OK ] Listening on Journal Socket.
systemd[1]: Listening on udev Control Socket.
[ OK ] Listening on udev Control Socket.
systemd[1]: Listening on udev Kernel Socket.
[ OK ] Listening on udev Kernel Socket.
systemd[1]: Condition check resulted in Huge Pages File System being skipped.
systemd[1]: Condition check resulted in POSIX Message Queue File System being skipped.
systemd[1]: Mounting RPC Pipe File System...
Mounting RPC Pipe File System...
systemd[1]: Mounting Kernel Debug File System...
Mounting Kernel Debug File System...
systemd[1]: Condition check resulted in Kernel Trace File System being skipped.
systemd[1]: Condition check resulted in Kernel Module supporting RPCSEC_GSS being skipped.
systemd[1]: Starting Restore / save the current clock...
Starting Restore / save the current clock...
systemd[1]: Starting Set the console keyboard layout...
Starting Set the console keyboard layout...
systemd[1]: Condition check resulted in Create list of static device nodes for the current kernel being skipped.
systemd[1]: Starting Load Kernel Module configfs...
Starting Load Kernel Module configfs...
systemd[1]: Starting Load Kernel Module drm...
Starting Load Kernel Module drm...
systemd[1]: Starting Load Kernel Module fuse...
Starting Load Kernel Module fuse...
systemd[1]: Condition check resulted in Set Up Additional Binary Formats being skipped.
systemd[1]: Condition check resulted in File System Check on Root Device being skipped.
systemd[1]: Starting Journal Service...
Starting Journal Service...
systemd[1]: Starting Load Kernel Modules...
Starting Load Kernel Modules...
systemd[1]: Starting Remount Root and Kernel File Systems...
Starting Remount Root and Kernel File Systems...
systemd[1]: Starting Coldplug All udev Devices...
Starting Coldplug All udev Devices...
systemd[1]: Mounted RPC Pipe File System.
[ OK ] Mounted RPC Pipe File System.
systemd[1]: Mounted Kernel Debug File System.
[ OK ] Mounted Kernel Debug File System.
systemd[1]: Finished Restore / save the current clock.
[ OK ] Finished Restore / save the current clock.
systemd[1]: modprobe@configfs.service: Succeeded.
systemd[1]: Finished Load Kernel Module configfs.
[ OK ] Finished Load Kernel Module configfs.
systemd[1]: modprobe@drm.service: Succeeded.
systemd[1]: Finished Load Kernel Module drm.
[ OK ] Finished Load Kernel Module drm.
systemd[1]: modprobe@fuse.service: Succeeded.
systemd[1]: Finished Load Kernel Module fuse.
[ OK ] Finished Load Kernel Module fuse.
systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'.
systemd[1]: Failed to start Load Kernel Modules.
[FAILED] Failed to start Load Kernel Modules.
EXT4-fs (mmcblk0p2): re-mounted. Quota mode: disabled.
See 'systemctl status systemd-modules-load.service' for details.
systemd[1]: Started Journal Service.
[ OK ] Started Journal Service.
[ OK ] Finished Set the console keyboard layout.
[ OK ] Finished Remount Root and Kernel File Systems.
Mounting FUSE Control File System...
Mounting Kernel Configuration File System...
Starting Flush Journal to Persistent Storage...
Starting Load/Save Random Seed...
systemd-journald[101]: Received client request to flush runtime journal.
Starting Apply Kernel Variables...
Starting Create System Users...
[ OK ] Mounted FUSE Control File System.
[ OK ] Mounted Kernel Configuration File System.
[ OK ] Finished Load/Save Random Seed.
[ OK ] Finished Apply Kernel Variables.
[ OK ] Finished Create System Users.
Starting Create Static Device Nodes in /dev...
[ OK ] Finished Create Static Device Nodes in /dev.
[ OK ] Reached target Local File Systems (Pre).
Starting Rule-based Manage…for Device Events and Files...
[ OK ] Finished Coldplug All udev Devices.
Starting Helper to synchronize boot up for ifupdown...
Starting Wait for udev To …plete Device Initialization...
[ OK ] Finished Helper to synchronize boot up for ifupdown.
[ OK ] Finished Flush Journal to Persistent Storage.
[ OK ] Started Rule-based Manager for Device Events and Files.
Starting Show Plymouth Boot Screen...
[ OK ] Started Show Plymouth Boot Screen.
[ OK ] Started Forward Password R…s to Plymouth Directory Watch.
[ OK ] Reached target Local Encrypted Volumes.
[ OK ] Found device /dev/ttyPS0.
[ OK ] Found device /dev/disk/by-partuuid/a22286d2-01.
[ OK ] Finished Wait for udev To Complete Device Initialization.
Starting File System Check…isk/by-partuuid/a22286d2-01...
[ OK ] Started File System Check Daemon to report status.
[ OK ] Finished File System Check…/disk/by-partuuid/a22286d2-01.
Mounting /boot...
[ OK ] Mounted /boot.
[ OK ] Reached target Local File Systems.
Starting Set console font and keymap...
Starting Raise network interfaces...
Starting Preprocess NFS configuration...
Starting Tell Plymouth To Write Out Runtime Data...
Starting Create Volatile Files and Directories...
[ OK ] Finished Set console font and keymap.
[ OK ] Finished Tell Plymouth To Write Out Runtime Data.
[ OK ] Finished Preprocess NFS configuration.
[ OK ] Reached target NFS client services.
[ OK ] Reached target Remote File Systems (Pre).
[ OK ] Reached target Remote File Systems.
[ OK ] Finished Create Volatile Files and Directories.
Starting Network Time Synchronization...
Starting Update UTMP about System Boot/Shutdown...
[ OK ] Finished Update UTMP about System Boot/Shutdown.
Starting Load Kernel Modules...
[ OK ] Started Network Time Synchronization.
[ OK ] Finished Raise network interfaces.
[ OK ] Reached target System Time Set.
[ OK ] Reached target System Time Synchronized.
[FAILED] Failed to start Load Kernel Modules.
See 'systemctl status systemd-modules-load.service' for details.
[ OK ] Reached target System Initialization.
[ OK ] Started CUPS Scheduler.
[ OK ] Started Daily apt download activities.
[ OK ] Started Daily apt upgrade and clean activities.
[ OK ] Started Periodic ext4 Onli…ata Check for All Filesystems.
[ OK ] Started Discard unused blocks once a week.
[ OK ] Started Daily rotation of log files.
[ OK ] Started Daily man-db regeneration.
[ OK ] Started Daily Cleanup of Temporary Directories.
[ OK ] Reached target Paths.
[ OK ] Reached target Timers.
[ OK ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[ OK ] Listening on CUPS Scheduler.
[ OK ] Listening on D-Bus System Message Bus Socket.
[ OK ] Listening on Erlang Port Mapper Daemon Activation Socket.
[ OK ] Listening on GPS (Global P…ioning System) Daemon Sockets.
[ OK ] Listening on triggerhappy.socket.
[ OK ] Reached target Sockets.
[ OK ] Reached target Basic System.
Starting Analog Devices power up/down sequence...
Starting Avahi mDNS/DNS-SD Stack...
[ OK ] Started Regular background program processing daemon.
[ OK ] Started D-Bus System Message Bus.
Starting dphys-swapfile - …unt, and delete a swap file...
Starting Remove Stale Onli…t4 Metadata Check Snapshots...
[ OK ] Started fan-control.
Starting Fix DP audio and X11 for Jupiter...
Starting Creating IIOD Context Attributes......
Starting Authorization Manager...
Starting DHCP Client Daemon...
Starting LSB: Switch to on…nless shift key is pressed)...
Starting LSB: rng-tools (Debian variant)...
Starting System Logging Service...
Starting User Login Management...
Starting triggerhappy global hotkey daemon...
Starting Disk Manager...
Starting WPA supplicant...
[ OK ] Started System Logging Service.
[ OK ] Started triggerhappy global hotkey daemon.
[ OK ] Finished Fix DP audio and X11 for Jupiter.
[ OK ] Started DHCP Client Daemon.
[ OK ] Finished dphys-swapfile - …mount, and delete a swap file.
[ OK ] Started Authorization Manager.
[ OK ] Started WPA supplicant.
[ OK ] Started Avahi mDNS/DNS-SD Stack.
[ OK ] Started LSB: rng-tools (Debian variant).
[ OK ] Started User Login Management.
[ OK ] Reached target Network.
[ OK ] Reached target Network is Online.
Starting Modem Manager...
Starting CUPS Scheduler...
[ OK ] Started Erlang Port Mapper Daemon.
Starting HTTP based time synchronization tool...
Starting Internet superserver...
Starting /etc/rc.local Compatibility...
Starting OpenBSD Secure Shell server...
Starting Permit User Sessions...
[ OK ] Started Unattended Upgrades Shutdown.
[ OK ] Started Internet superserver.
[ OK ] Finished Remove Stale Onli…ext4 Metadata Check Snapshots.
[ OK ] Finished Permit User Sessions.
Starting Light Display Manager...
[ OK ] Started HTTP based time synchronization tool.
[ OK ] Started /etc/rc.local Compatibility.
Starting Hold until boot process finishes up...
[ OK ] Started LSB: Switch to ond…(unless shift key is pressed).
[ OK ] Started Modem Manager.
[ OK ] Finished Analog Devices power up/down sequence.
[FAILED] Failed to start VNC Server for X11.
Raspbian GNU/Linux 11 analog ttyPS0
analog login: root (automatic login)
Linux analog 6.1.70-284114-g2e8908932dfd #1060 SMP PREEMPT Tue Mar 18 16:11:24 EET 2025 armv7l
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Wed Apr 29 10:29:28 BST 2026 on ttyPS0
Useful commands for the serial terminal
The below commands are to be run in the serial terminal connected to the FPGA.
To find out the IP of the FPGA board, run the following command and take the IP specified at “eth0 inet”:
~$
ifconfig
To see the IIO devices detected, run:
~$
iio_info | grep iio:device
To use the JESD204 status utility, run:
~$
jesd_status
Additionally, if running stty rows 30 before running jesd_status, you
can expand the visible area of it and see more than 4 lanes.
To power off the system, run the following command, and wait for the final message to be printed, then power off the FPGA board from the switch as well.
~$
poweroff
To reboot the system, run:
~$
reboot
Important
Even though this is Linux, this is a persistent file system. Care should
be taken not to corrupt the file system – always shut down properly, don’t
just turn off the power switch. You can do this from the terminal with
sudo shutdown -h now or the above-mentioned poweroff command.
If you are using a local display connection, you can also use the GUI
shut down button.
Using no-OS as software
Necessary files
The following files are needed for the system to boot:
HDL boot file:
system_top.xsano-OS project: projects/ad6676-ebz
Instructions on how to build the boot files from source can be found below:
AD6676-EBZ no-OS Example Project. More no-OS build details at No-OS Build Guide.
AD6676EVB HDL project. More HDL build details at Build an HDL project.
Required software
AMD Xilinx Vivado and Vitis (downloading Vitis from here will include Vivado as well)
An UART terminal (Putty/Tera Term/Minicom, etc.), Baud rate 115200 (8N1)
Required hardware
ZC706 Rev 1.2 or later board and its power supply
EVAL-AD6676 FMC evaluation board
SD card with at least 16GB of memory
Hardware for setting VADJ to 2.5V
Signal generator
Signal synthesizer (required only if using external clock source)
1x Mini-USB for UART
1x Micro-USB for JTAG
2x SMA cable for loopback
More details as to why you need these, can be found at Prerequisites.
Testing
Creating the setup
All the products described on this page include ESD (electrostatic discharge) sensitive devices. Electrostatic charges as high as 4000V readily accumulate on the human body or test equipment and can discharge without detection. Although the boards feature ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. This includes removing static charge on external equipment, cables, or antennas before connecting to the device.
Follow the steps in this order, to avoid damaging the components:
Connect the EVAL-AD6676 FMC board to the FPGA carrier HPC FMC socket (J37).
On the FMC card, choose between the available CLKIN sources:
On-board 200 MHz XO (default) — R95 and R100 installed
External clock via J5 — remove R95 and R100
On the FMC card, choose between the available clock routing options:
PECL comparator (default) — C35, C47, C48 installed (C38, C45, C46 uninstalled); CLKIN is routed through a PECL-output comparator that drives the AD6676 clock inputs
Direct RF via ceramic balun — install C38, C45, C46 and remove C35, C47, C48
Configure ZC706 for JTAG boot mode (SW11: 1-Down, 2-Down, 3-Down, 4-Down, 5-Down)
Connect USB UART J83 (Mini USB) to your host PC (J21).
Connect USB JTAG (Micro USB) to your host PC (J2).
Plug the Power Supply into 12V Power input connector (J22)
Turn on the power switch on the FPGA board
Build and run the project using the steps shown in here.
Observe console output messages on your terminal (use the first ttyUSB or COM port registered)
See also
For more detailed information on ZC706 switch configuration, check the ZC706 Hardware User Guide (chapter “Device Configuration”) here.
Console output
The following is what is printed in the serial console, after you have connected to the proper ttyUSB or COM port:
ad6676_xcvr: OK (4000000 kHz)
ad6676_adc: Successfully initialized (200003051 Hz)
ad6676_jesd status:
Link is enabled
Measured Link Clock: 100.002 MHz
Reported Link Clock: 100.000 MHz
Lane rate: 4000.000 MHz
Lane rate / 40: 100.000 MHz
LMFC rate: 25.000 MHz
Link status: DATA
SYSREF captured: Yes
SYSREF alignment error: No
DMA RAMP example: address=0x800000 samples=16384 channels=2 bits=16
DMA capture example: address=0x900000 samples=16384 channels=2 bits=16
Done.