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Generic AXI DAC IP core

The following wiki page presents a generic framework, which is used to design and develop an AXI based IP core for interfacing a Digital to Analog Converter (DAC) device with a high speed serial (JESD204B) or source synchronous parallel interface (LVDS/CMOS). This is a generic framework, there can be minor differences on each and every IP, the user should study this wiki page along with the IP's wiki page.

The main role of this page to ease the understanding of each DAC IP, and to provide a base knowledge which can be used to develop new IPs for currently unsupported devices.

Any kind of feedback regarding the DAC IP architecture or the following document is highly appreciated and can be addressed through the FPGA Reference Designs community forum.

Architecture

The main function of an AXI DAC IP is to handle all the low level signalling, which is defined by the device's digital data interface, and to forward the received data from the DMA or any other data source to the device. Beside this functionality there are a few processing modules inside the data path of the core, which can be used for signal conditioning. All these processing modules are optional, the are enabled or disabled by setting the appropriate parameters. The following block diagram presents a generic AXI DAC IP cores data path.

Transmit PHY

The most important part of the core is the Transmit PHY module. This module contains all the IO primitive instantiations and all the control logic required to receive data from the device.

All the PHY modules follows the same naming convention: axi_<device_name>_if.v (e.g. axi_ad9467_if.v)

In some cases, when the IP supports multiple interface type, the name of the PHY module look like: axi_<device_name>_<interface_type>_if.v (e.g. axi_ad9361_lvds_if.v)

Currently the Transmit PHY supports two different transmit interface:

All these interfaces are supported on both Altera (Intel) and Xilinx devices.

This module is perfect choice for those, who wants a HDL logic for the device interface, with a minimal resource footprint.

(1) The transmit module contains just the Transport Layer of the JESD204B interface. Lower layers are implemented by other cores.

DAC channel

Data source multiplexer
IQ correction module

TODO: wiki page about each module TODO: describe the (Read) FIFO interface

DAC core

The DAC core is the top file of the IP core, the naming convention of this file is: axi_<device_name>.v . Here are instantiated all the internal module discussed above, and a wrapper module (up_axi), which converts the AXI interface into a more simplistic addressable, memory mapped interface, so called microprocessor interface or uP interface. This interface is used to interconnect the different memory mapped module pieces.

Signal and Interface Pins

A generic AXI DAC core have at least three different interfaces:

The physical data interface (LVDS or CMOS) or the JESD204B data interface from the link layer
Read FIFO interface for the transmit or source module (e.g. DMA)
AXI Slave Memory Mapped interface for register map access

Interface	Pin	Type	Description
LVDS or CMOS TX interface
	`tx_clk_in_[p\|n]`	clock input	clock input (device's DCO)
	`tx_clk_out_[p\|n]`	clock output	clock output (device's DCI)
	`tx_data_out_[p\|n]`	output[resolution-1:0]	parallel data output (note that multiple parallel data buses can exist)
JESD TX interface
	`tx_clk`	clock input	core clock or device clock (must be (line clock)/40)
	`tx_data`	output[DW-1:0]	data input; DW=32*MAX_LANE_NO
Read FIFO interface
	`dac_clk`	clock output	Interface's clock signal
	`dac_enable_0`	output	Enable signal for the first channel, asserted if channel is active
	`dac_valid_0`	output	Data valid signal for the first channel, to validate data on the bus
	`dac_data_0`	input[DW-1:0]	Data signal for the first channel
	`dac_enable_x`	output	Enable signal for the channel x, asserted if channel is active
	`dac_valid_x`	output	Data valid signal for the channel x, to validate data on the bus
	`dac_data_x`	input[DW-1:0]	Data signal for the channel x
	`dac_dunf`	input	Data underflow signal from the receiver or sink module (e.g DMA)
AXI Memory Map Slave
	`s_axi_*`		Standard AXI Slave Memory Map interface for register map access

Register Map

TODO: wiki page about the register map architecture

present the AXI Memory Mapped interface
talk about the UP_AXI wrapper and the simplified register interface
present read and write logic
present CDC circuits

The following block diagram presents the different register maps physical location in the core. These register maps are generic and can be found in each AXI DAC core.

The base and DAC common register map is implemented in the same verilog file. It contains registers which controls and monitors the overall core, like:

Reset bits
Attributes of the transmit interface module
DRP (Dynamic Reconfiguration Port) access for different IO resources (Clock Management Units, PLLs, Gigabit Transceivers etc.)
Status registers (PN Monitor status, frequency of the interface clock)

The DAC Common register map is implemented in the up_dac_common.v verilog file. To find the instantiation of this module search for up_dac_common inside the IP's directory.

The DAC Channel register map controls and monitors channel specific attributes. Each channel of the core has an individual channel register map. It contains all the registers, which are necessary to control and monitor the processing modules of the data path. For detailed description of the available processing modules see DAC channel section.

The DAC Channel register map is implemented in the up_dac_channel.v verilog file. To find the instantiation of this module search for up_dac_channel inside the IP's directory.

Typical Register Map base addresses

Base (common to all cores)

Click to expand regmap

0x0000	0x0000	REG_VERSION				Version and Scratch Registers
Address		Bits	Name	Type	Default	Description
DWORD	BYTE	Bits	Name	Type	Default	Description
		[31:0]	VERSION[31:0]	RO	0x00000000	Version number. Unique to all cores.
0x0001	0x0004	REG_ID				Version and Scratch Registers
		[31:0]	ID[31:0]	RO	0x00000000	Instance identifier number.
0x0002	0x0008	REG_SCRATCH				Version and Scratch Registers
		[31:0]	SCRATCH[31:0]	RW	0x00000000	Scratch register.
0x0003	0x000c	REG_CONFIG				Version and Scratch Registers
		[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]	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]	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]	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]	MODE_1R1T	RO	0x0	If set, indicates that the core was implemented in 1 channel mode. (e.g. refer to AD9361 data sheet)
		[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]	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]	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]	PPS_RECEIVER_ENABLE	RO	0x0	If set, indicates the PPS receiver is enabled. (as a result of a configuration of the IP instance)
		[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]	EXT_SYNC	RO	0x0	If set the transport layer cores (ADC/DAC) have implemented the support for external synchronization signal.
		[13]	RD_RAW_DATA	RO	0x0	If set, the ADC has the capability to read raw data in register REG_CHAN_RAW_DATA from adc_channel.
0x0004	0x0010	REG_PPS_IRQ_MASK				PPS Interrupt mask
		[0]	PPS_IRQ_MASK	RW	0x1	Mask bit for the 1PPS receiver interrupt
0x0007	0x001c	REG_FPGA_INFO				FPGA device information Intel encoded values Xilinx encoded values
		[31:24]	FPGA_TECHNOLOGY	RO	0x0	Encoded value describing the technology/generation of the FPGA device (arria 10/7series)
		[23:16]	FPGA_FAMILY	RO	0x0	Encoded value describing the family variant of the FPGA device(e.g., SX, GX, GT or zynq, kintex, virtex)
		[15:8]	SPEED_GRADE	RO	0x0	Encoded value describing the FPGA's speed-grade
		[7:0]	DEV_PACKAGE	RO	0x0	Encoded value describing the device package. The package might affect high-speed interfaces
Tue Mar 14 10:17:59 2023

DAC Common (axi_ad)

Click to expand regmap

0x0010	0x0040	REG_RSTN				DAC Interface Control & Status
Address		Bits	Name	Type	Default	Description
DWORD	BYTE	Bits	Name	Type	Default	Description
		[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]	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]	RSTN	RW	0x0	Reset, default is IN-RESET (0x0), software must write 0x1 to bring up the core.
0x0011	0x0044	REG_CNTRL_1				DAC Interface Control & Status
		[0]	SYNC	RW	0x0	Setting this bit synchronizes channels within a DAC, and across multiple instances. This bit self clears.
		[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]	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]	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.
0x0012	0x0048	REG_CNTRL_2				DAC Interface Control & Status
		[16]	SDR_DDR_N	RW	0x0	Interface type (1 represents SDR, 0 represents DDR)
		[15]	SYMB_OP	RW	0x0	Select data symbol format mode (0x1)
		[14]	SYMB_8_16B	RW	0x0	Select number of bits for symbol format mode (1 represents 8b, 0 represents 16b)
		[12:8]	NUM_LANES[4:0]	RW	0x0	Number of active lanes (1 : CSSI 1-lane, LSSI 1-lane, 2 : LSSI 2-lane, 4 : CSSI 4-lane)
		[7]	PAR_TYPE	RW	0x0	Select parity even (0x0) or odd (0x1).
		[6]	PAR_ENB	RW	0x0	Select parity (0x1) or frame (0x0) mode.
		[5]	R1_MODE	RW	0x0	Select number of RF channels 1 (0x1) or 2 (0x0).
		[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[3:0]	NA	0x00	Reserved
0x0013	0x004c	REG_RATECNTRL				DAC Interface Control & Status
		[7:0]	RATE[7:0]	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.
0x0014	0x0050	REG_FRAME				DAC Interface Control & Status
		[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.
0x0015	0x0054	REG_STATUS1				DAC Interface Control & Status
		[31:0]	CLK_FREQ[31:0]	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.
0x0016	0x0058	REG_STATUS2				DAC Interface Control & Status
		[31:0]	CLK_RATIO[31:0]	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).
0x0017	0x005c	REG_STATUS3				DAC Interface Control & Status
		[0]	STATUS	RO	0x0	Interface status, if set indicates no errors. If not set, there are errors, software may try resetting the cores.
0x0018	0x0060	REG_DAC_CLKSEL				DAC Interface Control & Status
		[0]	DAC_CLKSEL	RW	0x0	Allows changing of the clock polarity. Note: its default value is CLK_EDGE_SEL
0x001A	0x0068	REG_SYNC_STATUS				DAC Synchronization Status register
		[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.
0x001C	0x0070	REG_DRP_CNTRL				DRP Control & Status
		[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[11:0]	RW	0x00	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[15:0]	RO	0x0000	Reserved for backwards compatibility
0x001D	0x0074	REG_DRP_STATUS				DAC Interface Control & Status
		[17]	DRP_LOCKED	RO	0x0	If set indicates the MMCM/PLL is locked
		[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[15:0]	RO	0x0000	Reserved for backwards compatibility
0x001E	0x0078	REG_DRP_WDATA				DAC Interface Control & Status
		[15:0]	DRP_WDATA[15:0]	RW	0x0000	DRP write data (does not include GTX lanes). NOT-APPLICABLE if DRP_DISABLE is set (0x1).
0x001F	0x007c	REG_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).
0x0020	0x0080	REG_DAC_CUSTOM_RD				DAC Read Configuration Data
		[31:0]	DAC_CUSTOM_RD[31:0]	RO	0x00000000	Custom Read of the available registers.
0x0021	0x0084	REG_DAC_CUSTOM_WR				DAC Write Configuration Data
		[31:0]	DAC_CUSTOM_WR[31:0]	RW	0x00000000	Custom Write of the available registers.
0x0022	0x0088	REG_UI_STATUS				User Interface Status
		[4]	IF_BUSY	RO	0x0	Interface busy. If set, indicates that the data interface is busy.
		[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]	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.
0x0023	0x008c	REG_DAC_CUSTOM_CTRL				DAC Control Configuration Data
		[31:0]	DAC_CUSTOM_CTRL[31:0]	RW	0x00000000	Custom Control of the available registers.
0x0028	0x00a0	REG_USR_CNTRL_1				DAC User Control & Status
		[7:0]	USR_CHANMAX[7:0]	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).
0x002E	0x00b8	REG_DAC_GPIO_IN				DAC GPIO inputs
		[31:0]	DAC_GPIO_IN[31:0]	RO	0x00000000	This reads auxiliary GPI pins of the DAC core
0x002F	0x00bc	REG_DAC_GPIO_OUT				DAC GPIO outputs
		[31:0]	DAC_GPIO_OUT[31:0]	RW	0x00000000	This controls auxiliary GPO pins of the DAC core NOT-APPLICABLE if GPIO_DISABLE is set (0x1).
Tue Mar 14 10:17:59 2023

JESD TPL (up_tpl_common)

Click to expand regmap

0x00080	0x0200	REG_TPL_CNTRL				JESD, TPL Control
Address		Bits	Name	Type	Default	Description
DWORD	BYTE	Bits	Name	Type	Default	Description
		[3:0]	PROFILE_SEL	RW	0x00	Selects one of the available deframer/framers from the transport layer. Valid only if `PROFILE_NUM` > 1.
0x00081	0x0204	REG_TPL_STATUS				JESD, TPL Status
		[3:0]	PROFILE_NUM	RO	0x00	Number of supported framer/deframer profiles.
0x00090	0x0240	REG_TPL_DESCRIPTOR_1				JESD, TPL descriptor for profile
		[31:24]	JESD_F	RO	0x00	Octets per Frame per Lane.
		[23:16]	JESD_S	RO	0x00	Samples per Converter per Frame.
		[15:8]	JESD_L	RO	0x00	Lane Count.
		[7:0]	JESD_M	RO	0x00	Converter Count.
0x00091	0x0244	REG_TPL_DESCRIPTOR_2				JESD, TPL descriptor for profile
		[7:0]	JESD_N	RO	0x00	Converter Resolution.
		[15:8]	JESD_NP	RO	0x00	Total Number of Bits per Sample.
0x00092	0x0248	REG_*				Profile 1, similar to registers 0x00010 to 0x00011.
0x00094	0x0250	REG_*				Profile 2, similar to registers 0x00010 to 0x00011.
Tue Mar 14 10:17:59 2023

DAC Channel (axi_ad*)

Click to expand regmap

0x0100	0x0400	REG_CHAN_CNTRL_1				DAC Channel Control & Status (channel - 0)
Address		Bits	Name	Type	Default	Description
DWORD	BYTE	Bits	Name	Type	Default	Description
		[21:16]	DDS_PHASE_DW[5:0]	R	0x0000	The DDS phase data width offers the HDL parameter configuration with the same name. This information is used in conjunction with REG_CHAN_CNTRL_9 and REG_CHAN_CNTRL_10. More info at https://wiki.analog.com/resources/fpga/docs/dds
		[15:0]	DDS_SCALE_1[15:0]	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).
0x0101	0x0404	REG_CHAN_CNTRL_2				DAC Channel Control & Status (channel - 0)
		[31:16]	DDS_INIT_1[15:0]	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[15:0]	RW	0x0000	Sets the frequency of the phase accumulator. Its value can be calculated by ; 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 REG_CHAN_CNTRL_1), the phase increment for tone 1 is extended in REG_CHAN_CNTRL_9. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x0102	0x0408	REG_CHAN_CNTRL_3				DAC Channel Control & Status (channel - 0)
		[15:0]	DDS_SCALE_2[15:0]	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).
0x0103	0x040c	REG_CHAN_CNTRL_4				DAC Channel Control & Status (channel - 0)
		[31:16]	DDS_INIT_2[15:0]	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 REG_CHAN_CNTRL_1), the phase init for tone 2 is extended in REG_CHAN_CNTRL_10. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_2[15:0]	RW	0x0000	Sets the frequency of the phase accumulator. Its value can be calculated by ; 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 REG_CHAN_CNTRL_1), the phase increment for tone 2 is extended in REG_CHAN_CNTRL_10. NOT-APPLICABLE if DDS_DISABLE is set (0x1).
0x0104	0x0410	REG_CHAN_CNTRL_5				DAC Channel Control & Status (channel - 0)
		[31:16]	DDS_PATT_2[15:0]	RW	0x0000	The DDS data pattern for this channel.
		[15:0]	DDS_PATT_1[15:0]	RW	0x0000	The DDS data pattern for this channel.
0x0105	0x0414	REG_CHAN_CNTRL_6				DAC Channel Control & Status (channel - 0)
		[2]	IQCOR_ENB	RW	0x0	if set, enables IQ correction. NOT-APPLICABLE if DAC_DP_DISABLE is set (0x1).
		[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]	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
0x0106	0x0418	REG_CHAN_CNTRL_7				DAC Channel Control & Status (channel - 0)
		[3:0]	DAC_DDS_SEL[3:0]	RW	0x00	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)
0x0107	0x041c	REG_CHAN_CNTRL_8				DAC Channel Control & Status (channel - 0)
		[31:16]	IQCOR_COEFF_1[15:0]	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[15:0]	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).
0x0108	0x0420	REG_USR_CNTRL_3				DAC Channel Control & Status (channel - 0)
		[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]	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[7:0]	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[7:0]	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[7:0]	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).
0x0109	0x0424	REG_USR_CNTRL_4				DAC Channel Control & Status (channel - 0)
		[31:16]	USR_INTERPOLATION_M[15:0]	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[15:0]	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).
0x010A	0x0428	REG_USR_CNTRL_5				DAC Channel Control & Status (channel - 0)
		[0]	DAC_IQ_MODE[0]	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]	DAC_IQ_SWAP[1]	RW	0x0	Allows IQ swapping in complex mode. Only takes effect if complex mode is enabled.
0x010B	0x042c	REG_CHAN_CNTRL_9				DAC Channel Control & Status (channel - 0)
		[31:16]	DDS_INIT_1_EXTENDED[15:0]	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 REG_CHAN_CNTRL_1 NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_1_EXTENDED[15:0]	RW	0x0000	Sets the frequency of tone 1's phase accumulator. Its value can be calculated by ; Where f_out is the generated output frequency, DDS_PHASE_DW value can be found in REG_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).
0x010C	0x0430	REG_CHAN_CNTRL_10				DAC Channel Control & Status (channel - 0)
		[31:16]	DDS_INIT_2_EXTENDED[15:0]	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 REG_CHAN_CNTRL_2 NOT-APPLICABLE if DDS_DISABLE is set (0x1).
		[15:0]	DDS_INCR_2_EXTENDED[15:0]	RW	0x0000	Sets the frequency of tone 2's phase accumulator. Its value can be calculated by ; Where f_out is the generated output frequency, DDS_PHASE_DW value can be found in REG_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).
0x0110	0x0440	REG_*				Channel 1, similar to registers 0x100 to 0x10f.
0x0120	0x0480	REG_*				Channel 2, similar to registers 0x100 to 0x10f.
0x01F0	0x07c0	REG_*				Channel 15, similar to registers 0x100 to 0x10f.
Fri Sep 8 16:01:53 2023

IO Delay Control (axi_ad*)

Click to expand regmap

0x00	0x0000	REG_DELAY_CONTROL_0				Delay Control & Status
Address		Bits	Name	Type	Default	Description
DWORD	BYTE	Bits	Name	Type	Default	Description
		[4:0]	DELAY_CONTROL_IO_0	RW	0x00	Tap value for input/output delay primitive of the first interface line. If the delay controller is not locked (indicate issues with delay_clk), the read-back value of this register will be 0xFFFFFFFF. Otherwise will be the last set up value.
0x01	0x0004	REG_DELAY_CONTROL_1				Delay Control & Status
		[4:0]	DELAY_CONTROL_IO_1	RW	0x00	Tap value for input/output delay primitive of the second interface line. If the delay controller is not locked (indicate issues with delay_clk), the read-back value of this register will be 0xFFFFFFFF. Otherwise will be the last set up value.
0x02	0x0008	REG_*				Tap value for input/output delay primitive of the third interface line.
0x03	0x000c	REG_*				Tap value for input/output delay primitive of the fourth interface line.
0x0F	0x003c	REG_DELAY_CONTROL_F				Delay Control & Status
		[4:0]	DELAY_CONTROL_IO_F	RW	0x00	Tap value for input/output delay primitive of the last interface line. In general the data and frame lines are controlled with delay primitives, the number of registers of a controller is device specific.
Tue Mar 14 10:17:59 2023

References

AXI_AD9361 IP Description

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Generic AXI DAC IP core