AXI AD3552R

The AXI AD3552R IP core can be used to interface the AD3552R, a low drift, ultra-fast, 16-bit accuracy, current output digital-to-analog converter (DAC) that can be configured in multiple voltage span ranges.

Features

• AXI-based configuration

• Vivado compatible

• 8b register read/write SDR/DDR

• 16b register read/write SDR/DDR

• data stream SDR/DDR ( clk_in/8 or clk_in/4 update rate)

• selectable input source: DMA/ADC/TEST_RAMP

• data out clock(SCLK) has clk_in/8 frequency when the converter is configured and clk_in/2 when the converter is in stream mode

• the IP reference clock (clk_in) can have a maximum frequency of 132MHz

• the IP has multiple device synchronization capability when the DMA is set as an input data source

Files

Name	Description
library/axi_ad3552r/axi_ad3552r.v	Verilog source for the AXI AD3552R.
library/axi_ad3552r/axi_ad3552r_channel.v	Verilog source for the AXI AD3552R channel.
library/axi_ad3552r/axi_ad3552r_core.v	Verilog source for the AXI AD3552R core.
library/axi_ad3552r/axi_ad3552r_if.v	Verilog source for the AD3552R interface module.
library/axi_ad3552r/axi_ad3552r_if_tb.v	Verilog source for the AD3552R interface module testbench.
library/axi_ad3552r/axi_ad3552r_if_tb	Setup script for the AD3552R interface module testbench.
library/axi_ad3552r/axi_ad3552r_ip.tcl	TCL script to generate the Vivado IP-integrator project.

Block Diagram

Configuration Parameters

Name	Description	Default Value	Choices/Range
ID	Core ID should be unique for each IP in the system - 0	0
FPGA_TECHNOLOGY	Encoded value describing the technology/generation of the FPGA device (Arria 10/7series)	0	Unknown (0), 7series (1), ultrascale (2), ultrascale+ (3), versal (4)
FPGA_FAMILY	Encoded value describing the family variant of the FPGA device(e.g., SX, GX, GT)	0	Unknown (0), artix (1), kintex (2), virtex (3), zynq (4), versalprime (5), versalaicore (6), versalpremium (7)
SPEED_GRADE	Encoded value describing the FPGA’s speed-grade	0	Unknown (0), -1 (10), -1L (11), -1H (12), -1HV (13), -1LV (14), -2 (20), -2L (21), -2LV (22), -2MP (23), -2LVC (24), -2LVI (25), -3 (30)
DEV_PACKAGE	Encoded value describing the device package. The package might affect high-speed interfaces	0	Unknown (0), rf (1), fl (2), ff (3), fb (4), hc (5), fh (6), cs (7), cp (8), ft (9), fg (10), sb (11), rb (12), rs (13), cl (14), sf (15), ba (16), fa (17), fs (18), fi (19), vs (20), ls (21)
DDS_DISABLE	Dds Disable.	0
DDS_TYPE	Dds Type.	1
DDS_CORDIC_DW	Dds Cordic Dw.	16
DDS_CORDIC_PHASE_DW	Dds Cordic Phase Dw.	16

Interface

s_axi

Standard AXI Slave Memory Map interface.

Physical Port	Logical Port	Direction	Dependency
s_axi_awaddr	AWADDR	in [15:0]
s_axi_awprot	AWPROT	in [2:0]
s_axi_awvalid	AWVALID	in
s_axi_awready	AWREADY	out
s_axi_wdata	WDATA	in [31:0]
s_axi_wstrb	WSTRB	in [3:0]
s_axi_wvalid	WVALID	in
s_axi_wready	WREADY	out
s_axi_bresp	BRESP	out [1:0]
s_axi_bvalid	BVALID	out
s_axi_bready	BREADY	in
s_axi_araddr	ARADDR	in [15:0]
s_axi_arprot	ARPROT	in [2:0]
s_axi_arvalid	ARVALID	in
s_axi_arready	ARREADY	out
s_axi_rdata	RDATA	out [31:0]
s_axi_rresp	RRESP	out [1:0]
s_axi_rvalid	RVALID	out
s_axi_rready	RREADY	in

s_axi_aclk

Physical Port	Logical Port	Direction	Dependency
s_axi_aclk	CLK	in

s_axi_aresetn

Physical Port	Logical Port	Direction	Dependency
s_axi_aresetn	RST	in

dac_clk

Reference clock

Physical Port	Logical Port	Direction	Dependency
dac_clk	CLK	in

Ports

Physical Port	Direction	Dependency	Description
dma_data	in [31:0]		Data from the DMAC when input source is set to DMA_DATA.
valid_in_dma	in		Valid from the DMAC.
valid_in_dma_sec	in		Valid from a secondary DMAC if synchronization is needed.
dac_data_ready	out		Data ready signal for the DMAC.
data_in_a	in [15:0]		Data for channel 1 when input source is set to ADC_DATA.
data_in_b	in [15:0]		Data for channel 2 when input source is set to ADC_DATA.
valid_in_a	in		Valid for channel 1.
valid_in_b	in		Valid for channel 2.
dac_sclk	out		Serial clock.
dac_csn	out		Serial chip select.
sdio_i	in [3:0]		Serial data in from the DAC.
sdio_o	out [3:0]		Serial data out to the DAC.
sdio_t	out		I/O buffer control signal.
external_sync	in		External synchronization flag from another axi_ad3552r IP.
sync_ext_device	out		Start_sync external device to another axi_ad3552r IP.

Detailed Architecture

Detailed Description

The top module instantiates:

• The axi_ad3552r interface module

• The axi_ad3552r core module

• The AXI handling interface

The axi_ad3552r_if has the state machine that controls the quad SPI interface. The axi_ad3552r_core module instantiates 2 axi_ad3552r channel modules.

Register Map

For the AXI_AD3552R control used registers from DAC Common are:

AXI AD3552R DAC Common (axi_ad3552r_dac_common) register map

DWORD	BYTE	Reg Name				Description
		BITS	Field Name	Type	Default Value	Description
0x11	0x44	CNTRL_1				DAC Interface Control & Status
		[1:1]	EXT_SYNC_ARM	RW	0x0	Setting this bit will arm the trigger mechanism sensitive to an external sync signal. Once the external sync signal goes high it synchronizes channels within a DAC, and across multiple instances. This bit has an effect only the EXT_SYNC synthesis parameter is set. This bit self clears.
0x12	0x48	CNTRL_2				DAC Interface Control & Status
		[16:16]	SDR_DDR_N	RW	0x0	Interface type (1 represents SDR, 0 represents DDR)
		[14:14]	SYMB_8_16B	RW	0x0	Select number of bits for symbol format mode (1 represents 8b, 0 represents 16b)
0x21	0x84	DAC_CUSTOM_WR				DAC Write Configuration Data
		[23:0]	DATA_WRITE	RW	0x000000	Configuration data for the AD3552R device registers. 8/16 LSB are used depending on the 8b/16b configuration.
0x22	0x88	UI_STATUS				User Interface Status
		[4:4]	IF_BUSY	RO	0x0	Interface busy. If set, indicates that the data interface is busy.
0x23	0x8c	DAC_CUSTOM_CTRL				DAC Control Configuration Data
		[31:24]	ADDRESS	RW	0x00	Register address when the AD3552R is configured or stream start address when the FSM is in stream state.
		[1:1]	STREAM	RW	0x0	Setting this bit will trigger a stream transfer based on the SDR/DDR configuration and address.
		[0:0]	TRANSFER_DATA	RW	0x0	Setting this bit will trigger a single transfer based on the SDR/DDR, 8b/16b configuration, address, and data_write.

Access Type	Name	Description
RW	Read-write	Reads will return the current register value. Writes will change the current register value.

For the AXI_AD3552R control used registers from DAC Channel are:

AXI AD3552R DAC Channel (axi_ad3552r_dac_channel) register map

DWORD	BYTE	Reg Name				Description
		BITS	Field Name	Type	Default Value	Description
0x100	0x400	CHAN_CNTRL0_7				DAC Channel Control & Status (channel - 0)
		[3:0]	DAC_DDS_SEL	RW	0x0	Select internal data sources (available only if the DAC supports it). 0x00: internal tone (DDS) 0x01: pattern (SED) 0x02: input data (DMA) 0x03: 0x00 0x04: inverted pn7 0x05: inverted pn15 0x06: pn7 (standard O.150) 0x07: pn15 (standard O.150) 0x08: loopback data (ADC) 0x09: pnX (Device specific e.g. ad9361) 0x0A: Nibble ramp (Device specific e.g. adrv9001) 0x0B: 16 bit ramp (Device specific e.g. adrv9001)
0x116	0x458	CHAN_CNTRL1_7				DAC Channel Control & Status (channel - 1)
		[3:0]	DAC_DDS_SEL	RW	0x0	Select internal data sources (available only if the DAC supports it). 0x00: internal tone (DDS) 0x01: pattern (SED) 0x02: input data (DMA) 0x03: 0x00 0x04: inverted pn7 0x05: inverted pn15 0x06: pn7 (standard O.150) 0x07: pn15 (standard O.150) 0x08: loopback data (ADC) 0x09: pnX (Device specific e.g. ad9361) 0x0A: Nibble ramp (Device specific e.g. adrv9001) 0x0B: 16 bit ramp (Device specific e.g. adrv9001)

Access Type	Name	Description
RW	Read-write	Reads will return the current register value. Writes will change the current register value.

For reference, all the register map templates are:

Base (common to all cores) register map

DWORD	BYTE	Reg Name				Description
		BITS	Field Name	Type	Default Value	Description
0x0	0x0	VERSION				Version and Scratch Registers
		[31:0]	VERSION	RO	0x00000000	Version number. Unique to all cores.
0x1	0x4	ID				Version and Scratch Registers
		[31:0]	ID	RO	0x00000000	Instance identifier number.
0x2	0x8	SCRATCH				Version and Scratch Registers
		[31:0]	SCRATCH	RW	0x00000000	Scratch register.
0x3	0xc	CONFIG				Version and Scratch Registers
		[0:0]	IQCORRECTION_DISABLE	RO	0x0	If set, indicates that the IQ Correction module was not implemented. (as a result of a configuration of the IP instance)
		[1:1]	DCFILTER_DISABLE	RO	0x0	If set, indicates that the DC Filter module was not implemented. (as a result of a configuration of the IP instance)
		[2:2]	DATAFORMAT_DISABLE	RO	0x0	If set, indicates that the Data Format module was not implemented. (as a result of a configuration of the IP instance)
		[3:3]	USERPORTS_DISABLE	RO	0x0	If set, indicates that the logic related to the User Data Format (e.g. decimation) was not implemented. (as a result of a configuration of the IP instance)
		[4:4]	MODE_1R1T	RO	0x0	If set, indicates that the core was implemented in 1 channel mode. (e.g. refer to AD9361 data sheet)
		[5:5]	DELAY_CONTROL_DISABLE	RO	0x0	If set, indicates that the delay control is disabled for this IP. (as a result of a configuration of the IP instance)
		[6:6]	DDS_DISABLE	RO	0x0	If set, indicates that the DDS is disabled for this IP. (as a result of a configuration of the IP instance)
		[7:7]	CMOS_OR_LVDS_N	RO	0x0	CMOS or LVDS mode is used for the interface. (as a result of a configuration of the IP instance)
		[8:8]	PPS_RECEIVER_ENABLE	RO	0x0	If set, indicates the PPS receiver is enabled. (as a result of a configuration of the IP instance)
		[9:9]	SCALECORRECTION_ONLY	RO	0x0	If set, indicates that the IQ Correction module implements only scale correction. IQ correction must be enabled. (as a result of a configuration of the IP instance)
		[12:12]	EXT_SYNC	RO	0x0	If set the transport layer cores (ADC/DAC) have implemented the support for external synchronization signal.
		[13:13]	RD_RAW_DATA	RO	0x0	If set, the ADC has the capability to read raw data in register CHAN_RAW_DATA from adc_channel.
0x4	0x10	PPS_IRQ_MASK				PPS Interrupt mask
		[0:0]	PPS_IRQ_MASK	RW	0x1	Mask bit for the 1PPS receiver interrupt
0x7	0x1c	FPGA_INFO				FPGA device information library/scripts/adi_intel_device_info_enc.tcl (Intel encoded values) library/scripts/adi_xilinx_device_info_enc.tcl (Xilinx encoded values)
		[31:24]	FPGA_TECHNOLOGY	RO	0x00	Encoded value describing the technology/generation of the FPGA device (arria 10/7series)
		[23:16]	FPGA_FAMILY	RO	0x00	Encoded value describing the family variant of the FPGA device(e.g., SX, GX, GT or zynq, kintex, virtex)
		[15:8]	SPEED_GRADE	RO	0x00	Encoded value describing the FPGA’s speed-grade
		[7:0]	DEV_PACKAGE	RO	0x00	Encoded value describing the device package. The package might affect high-speed interfaces

DAC Common (axi_ad) register map

DWORD	BYTE	Reg Name				Description
		BITS	Field Name	Type	Default Value	Description
0x10	0x40	RSTN				DAC Interface Control & Status
		[2:2]	CE_N	RW	0x0	Clock enable, default is enabled(0x0). An inverse version of the signal is exported out of the module to control clock enables
		[1:1]	MMCM_RSTN	RW	0x0	MMCM reset only (required for DRP access). Reset, default is IN-RESET (0x0), software must write 0x1 to bring up the core.
		[0:0]	RSTN	RW	0x0	Reset, default is IN-RESET (0x0), software must write 0x1 to bring up the core.
0x11	0x44	CNTRL_1				DAC Interface Control & Status
		[0:0]	SYNC	RW	0x0	Setting this bit synchronizes channels within a DAC, and across multiple instances. This bit self clears.
		[1:1]	EXT_SYNC_ARM	RW	0x0	Setting this bit will arm the trigger mechanism sensitive to an external sync signal. Once the external sync signal goes high it synchronizes channels within a DAC, and across multiple instances. This bit has an effect only the EXT_SYNC synthesis parameter is set. This bit self clears.
		[2:2]	EXT_SYNC_DISARM	RW	0x0	Setting this bit will disarm the trigger mechanism sensitive to an external sync signal. This bit has an effect only the EXT_SYNC synthesis parameter is set. This bit self clears.
		[8:8]	MANUAL_SYNC_REQUEST	RW	0x0	Setting this bit will issue an external sync event if it is hooked up inside the fabric. This bit has an effect only the EXT_SYNC synthesis parameter is set. This bit self clears.
0x12	0x48	CNTRL_2				DAC Interface Control & Status
		[16:16]	SDR_DDR_N	RW	0x0	Interface type (1 represents SDR, 0 represents DDR)
		[15:15]	SYMB_OP	RW	0x0	Select data symbol format mode (0x1)
		[14:14]	SYMB_8_16B	RW	0x0	Select number of bits for symbol format mode (1 represents 8b, 0 represents 16b)
		[12:8]	NUM_LANES	RW	0x00	Number of active lanes (1 : CSSI 1-lane, LSSI 1-lane, 2 : LSSI 2-lane, 4 : CSSI 4-lane)
		[7:7]	PAR_TYPE	RW	0x0	Select parity even (0x0) or odd (0x1).
		[6:6]	PAR_ENB	RW	0x0	Select parity (0x1) or frame (0x0) mode.
		[5:5]	R1_MODE	RW	0x0	Select number of RF channels 1 (0x1) or 2 (0x0).
		[4:4]	DATA_FORMAT	RW	0x0	Select data format 2’s complement (0x0) or offset binary (0x1). NOT-APPLICABLE if DAC_DP_DISABLE is set (0x1).
		[3:0]	RESERVED	NA	0x0	Reserved
0x13	0x4c	RATECNTRL				DAC Interface Control & Status
		[7:0]	RATE	RW	0x00	The effective dac rate (the maximum possible rate is dependent on the interface clock). The samples are generated at 1/RATE of the interface clock.
0x14	0x50	FRAME				DAC Interface Control & Status
		[0:0]	FRAME	RW	0x0	The use of frame is device specific. Usually setting this bit to 1 generates a FRAME (1 DCI clock period) pulse on the interface. This bit self clears.
0x15	0x54	STATUS1				DAC Interface Control & Status
		[31:0]	CLK_FREQ	RO	0x00000000	Interface clock frequency. This is relative to the processor clock and in many cases is 100MHz. The number is represented as unsigned 16.16 format. Assuming a 100MHz processor clock the minimum is 1.523kHz and maximum is 6.554THz. The actual interface clock is CLK_FREQ * CLK_RATIO (see below). Note that the actual sampling clock may not be the same as the interface clock- software must consider device specific implementation parameters to calculate the final sampling clock.
0x16	0x58	STATUS2				DAC Interface Control & Status
		[31:0]	CLK_RATIO	RO	0x00000000	Interface clock ratio - as a factor actual received clock. This is implementation specific and depends on any serial to parallel conversion and interface type (ddr/sdr/qdr).
0x17	0x5c	STATUS3				DAC Interface Control & Status
		[0:0]	STATUS	RO	0x0	Interface status, if set indicates no errors. If not set, there are errors, software may try resetting the cores.
0x18	0x60	DAC_CLKSEL				DAC Interface Control & Status
		[0:0]	DAC_CLKSEL	RW	0x0	Allows changing of the clock polarity. Note: its default value is CLK_EDGE_SEL
0x1a	0x68	SYNC_STATUS				DAC Synchronization Status register
		[0:0]	DAC_SYNC_STATUS	RO	0x0	DAC synchronization status. Will be set to 1 while waiting for the external synchronization signal This bit has an effect only the EXT_SYNC synthesis parameter is set.
0x1c	0x70	DRP_CNTRL				DRP Control & Status
		[28:28]	DRP_RWN	RW	0x0	DRP read (0x1) or write (0x0) select (does not include GTX lanes). NOT-APPLICABLE if DRP_DISABLE is set (0x1).
		[27:16]	DRP_ADDRESS	RW	0x000	DRP address, designs that contain more than one DRP accessible primitives have selects based on the most significant bits (does not include GTX lanes). NOT-APPLICABLE if DRP_DISABLE is set (0x1).
		[15:0]	RESERVED	RO	0x0000	Reserved for backwards compatibility
0x1d	0x74	DRP_STATUS				DAC Interface Control & Status
		[17:17]	DRP_LOCKED	RO	0x0	If set indicates the MMCM/PLL is locked
		[16:16]	DRP_STATUS	RO	0x0	If set indicates busy (access pending). The read data may not be valid if this bit is set (does not include GTX lanes). NOT-APPLICABLE if DRP_DISABLE is set (0x1).
		[15:0]	RESERVED	RO	0x0000	Reserved for backwards compatibility
0x1e	0x78	DRP_WDATA				DAC Interface Control & Status
		[15:0]	DRP_WDATA	RW	0x0000	DRP write data (does not include GTX lanes). NOT-APPLICABLE if DRP_DISABLE is set (0x1).
0x1f	0x7c	DRP_RDATA				DAC Interface Control & Status
		[15:0]	DRP_RDATA	RO	0x0000	DRP read data (does not include GTX lanes). NOT-APPLICABLE if DRP_DISABLE is set (0x1).
0x20	0x80	DAC_CUSTOM_RD				DAC Read Configuration Data
		[31:0]	DAC_CUSTOM_RD	RO	0x00000000	Custom Read of the available registers.
0x21	0x84	DAC_CUSTOM_WR				DAC Write Configuration Data
		[31:0]	DAC_CUSTOM_WR	RW	0x00000000	Custom Write of the available registers.
0x22	0x88	UI_STATUS				User Interface Status
		[4:4]	IF_BUSY	RO	0x0	Interface busy. If set, indicates that the data interface is busy.
		[1:1]	UI_OVF	RW1C	0x0	User Interface overflow. If set, indicates an overflow occurred during data transfer at the user interface (FIFO interface). Software must write a 0x1 to clear this register bit.
		[0:0]	UI_UNF	RW1C	0x0	User Interface underflow. If set, indicates an underflow occurred during data transfer at the user interface (FIFO interface). Software must write a 0x1 to clear this register bit.
0x23	0x8c	DAC_CUSTOM_CTRL				DAC Control Configuration Data
		[31:0]	DAC_CUSTOM_CTRL	RW	0x00000000	Custom Control of the available registers.
0x28	0xa0	USR_CNTRL_1				DAC User Control & Status
		[7:0]	USR_CHANMAX	RW	0x00	This indicates the maximum number of inputs for the channel data multiplexers. User may add different processing modules as inputs to the dac. NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
0x2e	0xb8	DAC_GPIO_IN				DAC GPIO inputs
		[31:0]	DAC_GPIO_IN	RO	0x00000000	This reads auxiliary GPI pins of the DAC core
0x2f	0xbc	DAC_GPIO_OUT				DAC GPIO outputs
		[31:0]	DAC_GPIO_OUT	RW	0x00000000	This controls auxiliary GPO pins of the DAC core NOT-APPLICABLE if GPIO_DISABLE is set (0x1).

DAC Channel (axi_ad*) register map

DWORD	BYTE	Reg Name				Description
		BITS	Field Name	Type	Default Value	Description
0x100 + 0x16*n	0x400 + 0x58*n	CHAN_CNTRLn_1				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[21:16]	DDS_PHASE_DW	RO	0x00	The DDS phase data width offers the HDL parameter configuration with the same name. This information is used in conjunction with CHAN_CNTRL_9 and CHAN_CNTRL_10. More info at AD Direct Digital Synthesis.
		[15:0]	DDS_SCALE_1	RW	0x0000	The DDS scale for tone 1. Sets the amplitude of the tone. The format is 1.1.14 fixed point (signed, integer, fractional). The DDS in general runs on 16-bits, note that if you do use both channels and set both scale to 0x4000, it is over-range. The final output is (tone_1_fullscale * scale_1) + (tone_2_fullscale * scale_2). NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x101 + 0x16*n	0x404 + 0x58*n	CHAN_CNTRLn_2				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	DDS_INIT_1	RW	0x0000	The DDS phase initialization for tone 1. Sets the initial phase offset of the tone. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_1	RW	0x0000	Sets the frequency of the phase accumulator. Its value can be calculated by \(INCR = (f_{out} * 2^{16}) * clkratio / f_{if}\); where f_out is the generated output frequency, and f_if is the frequency of the digital interface, and clock_ratio is the ratio between the sampling clock and the interface clock. If DDS_PHASE_DW is greater than 16(from CHAN_CNTRL_1), the phase increment for tone 1 is extended in CHAN_CNTRL_9. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x102 + 0x16*n	0x408 + 0x58*n	CHAN_CNTRLn_3				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[15:0]	DDS_SCALE_2	RW	0x0000	The DDS scale for tone 2. Sets the amplitude of the tone. The format is 1.1.14 fixed point (signed, integer, fractional). The DDS in general runs on 16-bits, note that if you do use both channels and set both scale to 0x4000, it is over-range. The final output is (tone_1_fullscale * scale_1) + (tone_2_fullscale * scale_2). NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x103 + 0x16*n	0x40c + 0x58*n	CHAN_CNTRLn_4				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	DDS_INIT_2	RW	0x0000	The DDS phase initialization for tone 2. Sets the initial phase offset of the tone. If DDS_PHASE_DW is greater than 16(from CHAN_CNTRL_1), the phase init for tone 2 is extended in CHAN_CNTRL_10. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_2	RW	0x0000	Sets the frequency of the phase accumulator. Its value can be calculated by \(INCR = (f_{out} * 2^{16}) * clkratio / f_{if}\); where f_out is the generated output frequency, and f_if is the frequency of the digital interface, and clock_ratio is the ratio between the sampling clock and the interface clock. If DDS_PHASE_DW is greater than 16(from CHAN_CNTRL_1), the phase increment for tone 2 is extended in CHAN_CNTRL_10. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x104 + 0x16*n	0x410 + 0x58*n	CHAN_CNTRLn_5				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	DDS_PATT_2	RW	0x0000	The DDS data pattern for this channel.
		[15:0]	DDS_PATT_1	RW	0x0000	The DDS data pattern for this channel.
0x105 + 0x16*n	0x414 + 0x58*n	CHAN_CNTRLn_6				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[2:2]	IQCOR_ENB	RW	0x0	if set, enables IQ correction. NOT-APPLICABLE if DAC_DP_DISABLE is set (0x1).
		[1:1]	DAC_LB_OWR	RW	0x0	If set, forces DAC_DDS_SEL to 0x8, loopback If DAC_LB_OWR and DAC_PN_OWR are both set, they are ignored
		[0:0]	DAC_PN_OWR	RW	0x0	IF set, forces DAC_DDS_SEL to 0x09, device specific pnX If DAC_LB_OWR and DAC_PN_OWR are both set, they are ignored
0x106 + 0x16*n	0x418 + 0x58*n	CHAN_CNTRLn_7				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[3:0]	DAC_DDS_SEL	RW	0x0	Select internal data sources (available only if the DAC supports it). 0x00: internal tone (DDS) 0x01: pattern (SED) 0x02: input data (DMA) 0x03: 0x00 0x04: inverted pn7 0x05: inverted pn15 0x06: pn7 (standard O.150) 0x07: pn15 (standard O.150) 0x08: loopback data (ADC) 0x09: pnX (Device specific e.g. ad9361) 0x0A: Nibble ramp (Device specific e.g. adrv9001) 0x0B: 16 bit ramp (Device specific e.g. adrv9001)
0x107 + 0x16*n	0x41c + 0x58*n	CHAN_CNTRLn_8				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	IQCOR_COEFF_1	RW	0x0000	IQ correction (if equipped) coefficient. If scale & offset is implemented, this is the scale value and the format is 1.1.14 (sign, integer and fractional bits). If matrix multiplication is used, this is the channel I coefficient and the format is 1.1.14 (sign, integer and fractional bits). NOT-APPLICABLE if IQCORRECTION_DISABLE is set (0x1).
		[15:0]	IQCOR_COEFF_2	RW	0x0000	IQ correction (if equipped) coefficient. If scale & offset is implemented, this is the offset value and the format is 2’s complement. If matrix multiplication is used, this is the channel Q coefficient and the format is 1.1.14 (sign, integer and fractional bits). NOT-APPLICABLE if IQCORRECTION_DISABLE is set (0x1).
0x108 + 0x16*n	0x420 + 0x58*n	USR_CNTRLn_3				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[25:25]	USR_DATATYPE_BE	RW	0x0	The user data type format- if set, indicates big endian (default is little endian). NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
		[24:24]	USR_DATATYPE_SIGNED	RW	0x0	The user data type format- if set, indicates signed (2’s complement) data (default is unsigned). NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
		[23:16]	USR_DATATYPE_SHIFT	RW	0x00	The user data type format- the amount of right shift for actual samples within the total number of bits. NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
		[15:8]	USR_DATATYPE_TOTAL_BITS	RW	0x00	The user data type format- number of total bits used for a sample. The total number of bits must be an integer multiple of 8 (byte aligned). NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
		[7:0]	USR_DATATYPE_BITS	RW	0x00	The user data type format- number of bits in a sample. This indicates the actual sample data bits. NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
0x109 + 0x16*n	0x424 + 0x58*n	USR_CNTRLn_4				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	USR_INTERPOLATION_M	RW	0x0000	This holds the user interpolation M value of the channel that is currently being selected on the multiplexer above. The total interpolation factor is of the form M/N. NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
		[15:0]	USR_INTERPOLATION_N	RW	0x0000	This holds the user interpolation N value of the channel that is currently being selected on the multiplexer above. The total interpolation factor is of the form M/N. NOT-APPLICABLE if USERPORTS_DISABLE is set (0x1).
0x10a + 0x16*n	0x428 + 0x58*n	USR_CNTRLn_5				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[0:0]	DAC_IQ_MODE	RW	0x0	Enable complex mode. In this mode the driven data to the DAC must be a sequence of I and Q sample pairs.
		[1:1]	DAC_IQ_SWAP	RW	0x0	Allows IQ swapping in complex mode. Only takes effect if complex mode is enabled.
0x10b + 0x16*n	0x42c + 0x58*n	CHAN_CNTRLn_9				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	DDS_INIT_1_EXTENDED	RW	0x0000	The extended DDS phase initialization for tone 1. Sets the initial phase offset of the tone. The extended init(phase) value should be calculated according to DDS_PHASE_DW value from CHAN_CNTRL_1 NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_1_EXTENDED	RW	0x0000	Sets the frequency of tone 1’s phase accumulator. Its value can be calculated by \(INCR = (f_{out} * 2^{phaseDW}) * clkratio / f_{if}\); Where f_out is the generated output frequency, DDS_PHASE_DW value can be found in CHAN_CNTRL_1 in case DDS_PHASE_DW is not 16, f_if is the frequency of the digital interface, and clock_ratio is the ratio between the sampling clock and the interface clock. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x10c + 0x16*n	0x430 + 0x58*n	CHAN_CNTRLn_10				DAC Channel Control & Status (channel - 0) Where n is from 0 to 15.
		[31:16]	DDS_INIT_2_EXTENDED	RW	0x0000	The extended DDS phase initialization for tone 2. Sets the initial phase offset of the tone. The extended init(phase) value should be calculated according to DDS_PHASE_DW value from CHAN_CNTRL_2 NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_2_EXTENDED	RW	0x0000	Sets the frequency of tone 2’s phase accumulator. Its value can be calculated by \(INCR = (f_{out} * 2^{phaseDW}) * clkratio / f_{if}\); Where f_out is the generated output frequency, DDS_PHASE_DW value can be found in CHAN_CNTRL_2 in case DDS_PHASE_DW is not 16, f_if is the frequency of the digital interface, and clock_ratio is the ratio between the sampling clock and the interface clock. NOT-APPLICABLE if DDS_DISABLE is set (0x1).

Design Guidelines

The control of the chip is done through the AXI_AD3552R IP.

The DAC interface must be connected to an IO buffer.

The example design uses a DMA to move the data from the memory to the CHIP quad SPI interface.

If the data needs to be processed in HDL before moving to DAC’s output, it can be done at the input of the IP (at the system level) or inside the axi_ad3552r_if interface module (at the IP level).

The example design uses a processor to program all the registers. If no processor is available in your system, you can create your IP starting from the interface module.

Software Support

• Linux device driver at drivers/iio/dac/ad3552r.c

• Linux device driver documentation on wiki

• No-OS device driver at drivers/dac/ad3552r

• No-OS project at projects/ad3552r_fmcz

References

• HDL IP core at library/axi_ad3552r

• HDL project at projects/ad3552r_evb

• AD3552R

• Zynq-7000 SoC Overview

• Zynq-7000 SoC Packaging and Pinout