This version (26 Oct 2021 12:23) was approved by Adrian Costina.The Previously approved version (27 May 2021 16:29) is available.

DAC JESD204B/C Transport Peripheral

The DAC JESD204B/C Transport Peripheral (AD-IP-JESD204-TRANSPORT-DAC) implements the transport level handling of a JESD204B/C transmitter device. It is compatible with a wide range of Analog Devices high-speed digital-to-analog converters.

The core handles the JESD204B/C framing of the user-provided payload data. In addition it is capable of generating standard and user-defined test-pattern data for interface verification. It also features a per-channel dual-tone DDS that can be used to dynamically generate test-tones.

The peripheral can be configured at runtime through a AXI4-Lite memory mapped register map.

Features

ADI high-speed DAC compatible JESD204B/C data framing
Test-pattern generator for interface verification
Per-channel dual-tone DDS (optional)
Runtime re-configurability through memory-mapped register interface (AXI4-Lite)

Files

ad_ip_jesd204_tpl_dac.v

Block Diagram

Synthesis Configuration Parameters

Name	Description	Default
`ID`	Instance identification number.	0
`NUM_LANES`	Number of lanes supported by the peripheral. Equivalent to JESD204 `L` parameter.	4
`NUM_CHANNELS`	Number of converters supported by the peripheral. Equivalent to JESD204 `M` parameter.	2
`SAMPLES_PER_FRAME`	Number of samples per frame. Equivalent to JESD204 `S` parameter.	1
`CONVERTER_RESOLUTION`	Resolution of the converter. Equivalent to JESD204 `N` parameter.	16
`BITS_PER_SAMPLE`	Number of bits per sample. Equivalent to JESD204 `NP` parameter.	16
`OCTETS_PER_BEAT`	Number of bytes per beat for each link.	4
`DDS_TYPE`	DDS Type. Set 1 for CORDIC or 2 for Polynomial	1
`DDS_CORDIC_DW`	CORDIC DDS Data Width	16
`DDS_CORDIC_PHASE_DW`	CORDIC DDS Phase Width	16
`DATAPATH_DISABLE`	Disable instantiation of DDS core.	0

Signal and Interface Pins

Name	Type	Description
Configuration interface
`s_axi_aclk`	Clock	All `S_AXI` signals and `irq` are synchronous to this clock.
`s_axi_aresetn`	Synchronous active low reset	Resets the internal state of the peripheral.
`S_AXI`	AXI4-Lite bus slave	Memory mapped AXI-lite bus that provides access to modules register map.
Link layer interface
`link_clk`	Clock	Device clock for the JESD204B/C interface. Must be line clock / 40 for 204B correct operation. Must be line clock / 66 for correct 204C operation.
`LINK_DATA`	AXI4-Streaming interface	Framed transmit data towards link layer.
Application layer interface
`enable`	Output	Request signal for each channel.
`dac_valid`	Output	Qualifier signal for each channel. Always '1'.
`dac_ddata`	Input	Raw application layer data, every channel concatenated.
`dac_dunf`	Input	Application layer underflow.

Register Map

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

Theory of Operation

Data paths

The data is intended for the DAC can have multiple sources:

DMA source Raw data can be accepted from a external block representing the Application layer.
DDS source For each DAC channel a dual-tone can be generated by a DDS core.
PRBS source For each DAC channel one of the following PN sequence can be selected: PN7, PN15, inverted PN7, inverted PN15

Interfaces and Signals

Application layer interface

The application layer connects to the framer block when the DMA source is selected. The framer module takes sample data and maps it onto the format that the JESD204 link expects for the specified framer configuration.

The data in the application layer interface dac_ddata is expected to have the following layout:

   MSB                                                                  LSB 
  [ MmSn, ..., MmS1, MnS0, ..., M1Sn, ... M1S1, M1S0, M0Sn, ... M0S1, M0S0 ]

Where MjSi refers to the i-th sample of the j-th converter. With m being the number of converters and n the number of samples per converter per beat.

The core asserts the enable signal for each channel that is enabled by the software. The dac_ddata data bus must contain data for each channel regardless if the channels are enabled or not.

Link layer interface

The link layer interface description can be found in the User Data Interface section of the JESD204B/C Link Transmit Peripheral IP.

Clock Monitor

The REG_STATUS (0x054) register CLK_FREQ field allows to determine the clock rate of the device clock (link_clk) relative to the AXI interface clock (s_axi_aclk). This can be used to verify that the device clock is running at the expected rate.

The number is represented as unsigned 16.16 format. Assuming a 100MHz processor clock this corresponds to a resolution of 1.523kHz per LSB. A raw value of 0 indicates that the link clock is currently not active.

External synchronization

By setting the EXT_SYNC parameter of the IP to 1 an external synchronization signal dac_sync_in can be used to trigger data movement from user application layer to the link layer, reset internal DDS cores or PRBS generators. If the EXT_SYNC parameter is set to zero the external signal is ignored and only a software controlled reset happens inside the DDS,PRBS logic.

The external synchronization signal should be synchronous with the dac clock. Synchronization will be done on the rising edge of the signal.

The self clearing SYNC control bit from the REG_CNTRL_1 (0x44) register will arm the trigger logic to wait for the external sync signal. The DAC_SYNC_STATUS status bit from the REG_SYNC_STATUS (0x68) register will show that the synchronization is armed but the synchronization signal has not yet been received.

Once the sync signal is received the data will start to flow and the DAC_SYNC_STATUS status bit will reflect that with a deassertion.

While the synchronization mechanism is armed the dac_valid output signal is gated until the trigger signal is received. The gating happens only during this period, meaning that dac_valid will stay high in all other cases (normal operation).

Restrictions

Reduced number of octets-per-frame (F) settings. The following values are supported by the peripheral: 1, 2, 4

Starting from this commit this restriction no longer applies

Software Support

To ensure correct operation it is highly recommended to use the Analog Devices provided JESD204B/C software packages for interfacing the peripheral. Analog Devices is not able to provide support in case issues arise from using custom low-level software for interfacing the peripheral.

Supported Devices

JESD204B Digital-to-Analog Converters

AD9135: Dual, 11-Bit, high dynamic, 2.8 GSPS, TxDAC+® Digital-to-Analog Converter
AD9136: Dual, 16-Bit, 2.8 GSPS, TxDAC+® Digital-to-Analog Converter
AD9144: Quad, 16-Bit, 2.8 GSPS, TxDAC+® Digital-to-Analog Converter
AD9152: Dual, 16-Bit, 2.25 GSPS, TxDAC+ Digital-to-Analog Converter
AD9154: Quad, 16-Bit, 2.4 GSPS, TxDAC+® Digital-to-Analog Converter
AD9161: 11-Bit, 12 GSPS, RF Digital-to-Analog Converter
AD9162: 16-Bit, 12 GSPS, RF Digital-to-Analog Converter
AD9163: 16-Bit, 12 GSPS, RF DAC and Digital Upconverter
AD9164: 16-Bit, 12 GSPS, RF DAC and Direct Digital Synthesizer
AD9172: Dual, 16-Bit, 12.6 GSPS RF DAC with Channelizers
AD9173: Dual, 16-Bit, 12.6 GSPS RF DAC with Channelizers
AD9174: Dual, 16-Bit, 12.6 GSPS RF DAC and Direct Digital Synthesizer
AD9175: Dual, 11-Bit/16-Bit, 12.6 GSPS RF DAC with Wideband Channelizers
AD9176: Dual, 16-Bit, 12.6 GSPS RF DAC with Wideband Channelizers

JESD204B RF Transceivers

AD9371: SDR Integrated, Dual RF Transceiver with Observation Path
AD9375: SDR Integrated, Dual RF Transceiver with Observation Path and DPD
ADRV9009: SDR Integrated, Dual RF Transceiver with Observation Path
ADRV9008-1: SDR Integrated, Dual RF Receiver
ADRV9008-2: SDR Integrated, Dual RF Transmitter with Observation Path

JESD204B/C Mixed-Signal Front Ends

AD9081: MxFE™ Quad, 16-Bit, 12GSPS RFDAC and Quad, 12-Bit, 4GSPS RFADC
AD9082: MxFE™ QUAD, 16-Bit, 12GSPS RFDAC and DUAL, 12-Bit, 6GSPS RFADC

More Information

Technical Support

Analog Devices will provide limited online support for anyone using the core with Analog Devices components (ADC, DAC, Video, Audio, etc) via the EngineerZone.

Wiki

Analog Devices Wiki

Table of Contents

DAC JESD204B/C Transport Peripheral

Features

Files

Block Diagram

Synthesis Configuration Parameters

Signal and Interface Pins

Register Map

Base (common to all cores)

DAC Common (axi_ad)

JESD TPL (up_tpl_common)

DAC Channel (axi_ad*)

Theory of Operation

Data paths

Interfaces and Signals

Application layer interface

Link layer interface

Clock Monitor

External synchronization

Restrictions

Software Support

Supported Devices

JESD204B Digital-to-Analog Converters

JESD204B RF Transceivers

JESD204B/C Mixed-Signal Front Ends

More Information

Technical Support

Analog Devices Wiki

Table of Contents

DAC JESD204B/C Transport Peripheral

Features

Files

Block Diagram

Synthesis Configuration Parameters

Signal and Interface Pins

Register Map

Base (common to all cores)

DAC Common (axi_ad)

JESD TPL (up_tpl_common)

DAC Channel (axi_ad*)

Theory of Operation

Data paths

Interfaces and Signals

Application layer interface

Link layer interface

Clock Monitor

External synchronization

Restrictions

Software Support

Supported Devices

JESD204B Digital-to-Analog Converters

JESD204B RF Transceivers

JESD204B/C Mixed-Signal Front Ends

More Information

Technical Support

Page Tools