HDMI Arria® 10 FPGA IP Design Example User Guide

Download PDF
ID 683156
Date 4/29/2024
Public
Document Table of Contents
Document Table of Contents x
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Arria® 10 Devices 2. HDMI 2.1 Design Example (Support FRL = 1) 3. HDMI 2.0 Design Example (Support FRL = 0) 4. HDCP Over HDMI 2.0/2.1 Design Example 5. HDMI Arria® 10 FPGA IP Design Example User Guide Archives 6. Revision History for HDMI Arria® 10 FPGA IP Design Example User Guide
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Arria® 10 Devices x
1.1. Generating the Design 1.2. Simulating the Design 1.3. Compiling and Testing the Design 1.4. HDMI Intel® FPGA IP Design Example Parameters
2. HDMI 2.1 Design Example (Support FRL = 1) x
2.1. HDMI 2.1 RX-TX Retransmit Design Block Diagram 2.2. Creating RX-Only or TX-Only Designs 2.3. Hardware and Software Requirements 2.4. Directory Structure 2.5. Design Components 2.6. Dynamic Range and Mastering (HDR) InfoFrame Insertion and Filtering 2.7. Design Software Flow 2.8. Running the Design in Different FRL Rates 2.9. Clocking Scheme 2.10. Interface Signals 2.11. Design RTL Parameters 2.12. Hardware Setup 2.13. Simulation Testbench 2.14. Design Limitations 2.15. Debugging Features 2.16. Upgrading Your Design
2.5. Design Components x
2.5.1. HDMI TX Components 2.5.2. HDMI RX Components 2.5.3. Top-Level Common Blocks
2.15. Debugging Features x
2.15.1. Software Debugging Message 2.15.2. SCDC Information from the Sink Connected to TX 2.15.3. Clock Frequency Measurement
3. HDMI 2.0 Design Example (Support FRL = 0) x
3.1. HDMI 2.0 RX-TX Retransmit Design Block Diagram 3.2. Hardware and Software Requirements 3.3. Directory Structure 3.4. Design Components 3.5. Dynamic Range and Mastering (HDR) InfoFrame Insertion and Filtering 3.6. Clocking Scheme 3.7. Interface Signals 3.8. Design RTL Parameters 3.9. Hardware Setup 3.10. Simulation Testbench 3.11. Upgrading Your Design
4. HDCP Over HDMI 2.0/2.1 Design Example x
4.1. High-bandwidth Digital Content Protection (HDCP) 4.2. Nios® V Processor Software Flow 4.3. Design Walkthrough 4.4. Protection of Encryption Key Embedded in FPGA Design 4.5. Security Considerations 4.6. Debug Guidelines
4.1. High-bandwidth Digital Content Protection (HDCP) x
4.1.1. HDCP Over HDMI Design Example Architecture
4.3. Design Walkthrough x
4.3.1. Setting Up the Hardware 4.3.2. Generating the Design 4.3.3. Including HDCP Production Keys 4.3.4. Compiling the Design 4.3.5. Viewing the Results
4.3.3. Including HDCP Production Keys x
4.3.3.1. Storing Plain HDCP Production Keys in the FPGA (Support HDCP Key Management = 0) 4.3.3.2. Storing Encrypted HDCP Production Keys in the External Flash Memory or EEPROM (Support HDCP Key Management = 1)
4.3.3.1. Storing Plain HDCP Production Keys in the FPGA (Support HDCP Key Management = 0) x
4.3.3.1.1. HDCP Key Mapping from DCP Key Files 4.3.3.1.2. hdcp1x_tx_kmem.v and hdcp1x_rx_kmem.v files 4.3.3.1.3. hdcp2x_rx_kmem.v file 4.3.3.1.4. hdcp2x_tx_kmem.v file
4.3.3.2. Storing Encrypted HDCP Production Keys in the External Flash Memory or EEPROM (Support HDCP Key Management = 1) x
4.3.3.2.1. Intel KEYENC 4.3.3.2.2. Key Programmer
4.3.5. Viewing the Results x
4.3.5.1. Push Buttons and LED Functions
4.6. Debug Guidelines x
4.6.1. HDCP Status Signals 4.6.2. Modifying HDCP Software Parameters 4.6.3. Frequently Asked Questions (FAQ)
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Arria® 10 Devices
2. HDMI 2.1 Design Example (Support FRL = 1)
3. HDMI 2.0 Design Example (Support FRL = 0)
4. HDCP Over HDMI 2.0/2.1 Design Example
5. HDMI Arria® 10 FPGA IP Design Example User Guide Archives
6. Revision History for HDMI Arria® 10 FPGA IP Design Example User Guide

2.10. Interface Signals

The tables list the signals for the HDMI design example with FRL enabled.
Table 16.  Top-Level Signals
Signal Direction Width Description
On-board Oscillator Signal
clk_fpga_b3_p Input 1

100 MHz free running clock for core reference clock.

refclk4_p Input 1

100 MHz free running clock for transceiver reference clock.
User Push Buttons and LEDs
user_pb Input 3

Push button to control the HDMI Intel® FPGA IP design functionality.

cpu_resetn Input 1

Global reset.
user_led_g Output 8

Green LED display.

Refer to Hardware Setup for more information about the LED functions.

user_dipsw

Input

 1

User-defined DIP switch.

Refer to Hardware Setup for more information about the DIP switch functions.

HDMI FMC Daughter Card Pins on FMC Port B
fmcb_gbtclk_m2c_p_0 Input

1

 HDMI RX TMDS clock.
fmcb_dp_m2c_p Input 4

HDMI RX clock, red, green, and blue data channels.
fmcb_dp_c2m_p Output 4

HDMI TX clock, red, green, and blue data channels.
fmcb_la_rx_p_9 Input 1

HDMI RX +5V power detect.
fmcb_la_rx_p_8 Output 1 HDMI RX hot plug detect.
fmcb_la_rx_n_8 Input 1

HDMI RX I2C SDA for DDC and SCDC.

fmcb_la_tx_p_10 Input 1 HDMI RX I2C SCL for DDC and SCDC.
fmcb_la_tx_p_12 Input 1 HDMI TX hot plug detect.
fmcb_la_tx_n_12 Input 1 HDMI I2C SDA for DDC and SCDC.
fmcb_la_rx_p_10 Input 1

HDMI I2C SCL for DDC and SCDC.

fmcb_la_tx_n_9 Input 1

HDMI I2C SDA for redriver control.

fmcb_la_rx_p_11 Input 1

HDMI I2C SCL for redriver control.

fmcb_la_tx_n_13 Output 1 HDMI TX +5V
Note: Only available when Bitec HDMI Daughter Card Revision 9 is selected.
Table 17.  HDMI RX Top-Level Signals
Signal Direction Width Description
Clock and Reset Signals
mgmt_clk Input 1

System clock input (100 MHz).
reset Input 1

System reset input.
rx_tmds_clk Input 1

HDMI RX TMDS clock.
i2c_clk Input 1

Clock input for DDC and SCDC interface.
rxphy_cdr_refclk1 Input 1

Clock input for RX CDR reference clock 1. The clock frequency is 100 MHz.

rx_vid_clk Output 1

Video clock output.
sys_init Output 1

System initialization to reset the system upon power-up.
RX Transceiver and IOPLL Signals
rxpll_tmds_locked Output 1

Indicates the TMDS clock IOPLL is locked.
rxpll_frl_locked Output 1

Indicates the FRL clock IOPLL is locked.
rxphy_serial_data Input 4

HDMI serial data to the RX Native PHY.
rxphy_ready Output 1

Indicates the RX Native PHY is ready.
rxphy_cal_busy_raw Output 4

RX Native PHY calibration busy to the transceiver arbiter.
rxphy_cal_busy_gated Input 4

Calibration busy signal from the transceiver arbiter to the RX Native PHY.

rxphy_rcfg_slave_write Input 4

Transceiver reconfiguration Avalon® memory-mapped interface from the RX Native PHY to the transceiver arbiter.

rxphy_rcfg_slave_read Input 4
rxphy_rcfg_slave_address Input 40
rxphy_rcfg_slave_writedata Input 128
rxphy_rcfg_slave_readdata Output 128
rxphy_rcfg_slave_waitrequest Output 4
RX Reconfiguration Management
rxphy_rcfg_busy Output 1

RX Reconfiguration busy signal.
rx_tmds_freq Output 24

HDMI RX TMDS clock frequency measurement (in 10 ms).
rx_tmds_freq_valid Output 1

Indicates the RX TMDS clock frequency measurement is valid.
rxphy_os Output 1
Oversampling factor:
  • 0: 1x oversampling
  • 1: 5× oversampling
rxphy_rcfg_master_write Output 1

RX reconfiguration management Avalon® memory-mapped interface to transceiver arbiter.

rxphy_rcfg_master_read Output 1
rxphy_rcfg_master_address Output 12
rxphy_rcfg_master_writedata Output 32
rxphy_rcfg_master_readdata Input 32
rxphy_rcfg_master_waitrequest Input 1
HDMI RX Core Signals
rx_vid_clk_locked Input 1

Indicates vid_clk is stable.
rxcore_frl_rate Output 4

Indicates the FRL rate that the RX core is running.

  • 0: Legacy Mode (TMDS)
  • 1: 3 Gbps 3 lanes
  • 2: 6 Gbps 4 lanes
  • 3: 6 Gbps 4 lanes
  • 4: 8 Gbps 4 lanes
  • 5: 10 Gbps 4 lanes
  • 6: 12 Gbps 4 lanes
  • 7-15: Reserved
rxcore_frl_locked Output 4

Each bit indicates the specific lane that has achieved FRL lock. FRL is locked when the RX core successfully performs alignment, deskew, and achieves lane lock.

  • For 3-lane mode, lane lock is achieved when the RX core receives Scrambler Reset (SR) or Start-Super-Block (SSB) for every 680 FRL character periods for at least 3 times.
  • For 4-lane mode, lane lock is achieved when the RX core receives Scrambler Reset (SR) or Start-Super-Block (SSB) for every 510 FRL character periods for at least 3 times.
rxcore_frl_ffe_levels Output 4 Corresponds to the FFE_level bit in the SCDC 0x31 register bit [7:4] in the RX core.
rxcore_frl_flt_ready Input 1 Asserts to indicate the RX is ready for the link training process to start. When asserted, the FLT_ready bit in the SCDC register 0x40 bit 6 is asserted as well.
rxcore_frl_src_test_config Input 8 Specifies the source test configurations. The value is written into the SCDC Test Configuration register in the SCDC register 0x35.
rxcore_tbcr Output 1

Indicates the TMDS bit to clock ratio; corresponds to the TMDS_Bit_Clock_Ratio register in the SCDC register 0x20 bit 1.

  • When running in HDMI 2.0 mode, this bit is asserted. Indicates the TMDS bit to clock ratio of 40:1.
  • When running in HDMI 1.4b, this bit is not asserted. Indicates the TMDS bit to clock ratio of 10:1.
  • This bit is unused for FRL mode.
rxcore_scrambler_enable Output 1 Indicates if the received data is scrambled; corresponds to the Scrambling_Enable field in the SCDC register 0x20 bit 0.
rxcore_audio_de Output 1

HDMI RX core audio interfaces

Refer to the Sink Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

rxcore_audio_data Output 256
rxcore_audio_info_ai Output 48
rxcore_audio_N Output 20
rxcore_audio_CTS Output 20
rxcore_audio_metadata Output 165
rxcore_audio_format Output 5
rxcore_aux_pkt_data Output 72

HDMI RX core auxiliary interfaces

Refer to the Sink Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

rxcore_aux_pkt_addr Output 6
rxcore_aux_pkt_wr Output 1
rxcore_aux_data Output 72
rxcore_aux_sop Output 1
rxcore_aux_eop Output 1
rxcore_aux_valid Output 1
rxcore_aux_error Output 1
rxcore_gcp Output 6

HDMI RX core sideband signals

Refer to the Sink Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

rxcore_info_avi Output 123
rxcore_info_vsi Output 61
rxcore_locked Output 1

HDMI RX core video ports

Note: N = pixels per clock

Refer to the Sink Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

rxcore_vid_data Output N*48
rxcore_vid_vsync Output N
rxcore_vid_hsync Output N
rxcore_vid_de Output N
rxcore_vid_valid Output 1
rxcore_vid_lock Output 1
rxcore_mode Output 1

HDMI RX core control and status ports.

Note: N = symbols per clock

Refer to the Sink Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

rxcore_ctrl Output N*6
rxcore_color_depth_sync Output 2
hdmi_5v_detect Input 1

HDMI RX 5V detect and hotplug detect.

Refer to the Sink Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

hdmi_rx_hpd Output 1
rx_hpd_trigger Input 1
I2C Signals
hdmi_rx_i2c_sda Input 1 HDMI RX DDC and SCDC interface.
hdmi_rx_i2c_scl Input 1
RX EDID RAM Signals
edid_ram_access Input 1

HDMI RX EDID RAM access interface.

Assert edid_ram_access when you want to write or read from the EDID RAM, else this signal should be kept low.

When you assert edid_ram_access, the hotplug signal deasserts to allow write or read to the EDID RAM. When EDID RAM access is completed, you should deassert edid_ram_assess and the hotplug signal asserts. The source will read the new EDID due to the hotplug signal toggling.

edid_ram_address Input 8
edid_ram_write Input 1
edid_ram_read Input 1
edid_ram_readdata Output 8
edid_ram_writedata Input 8
edid_ram_waitrequest Output 1
Table 18.  HDMI TX Top-Level Signals
Signal Direction Width Description
Clock and Reset Signals
mgmt_clk Input 1 System clock input (100 MHz).
reset Input 1 System reset input.
tx_tmds_clk Input 1 HDMI RX TMDS clock.
txfpll_refclk1 Input 1 Clock input for TX PLL reference clock 1. The clock frequency is 100 MHz.
tx_vid_clk Output 1 Video clock output.
tx_frl_clk Output 1 FRL clock output.
sys_init Input 1 System initialization to reset the system upon power-up.
tx_init_done Input 1 TX initialization to reset the TX reconfiguration management block and transceiver reconfiguration interface.
TX Transceiver and IOPLL Signals
txpll_frl_locked Output 1 Indicates the link speed clock and FRL clock IOPLL is locked.
txfpll_locked Output 1 Indicates the TX PLL is locked.
txphy_serial_data Output 4 HDMI serial data from the TX Native PHY.
txphy_ready Output 1 Indicates the TX Native PHY is ready.
txphy_cal_busy Output 1 TX Native PHY calibration busy signal.
txphy_cal_busy_raw Output 4 Calibration busy signal to the transceiver arbiter.
txphy_cal_busy_gated Input 4 Calibration busy signal from the transceiver arbiter to the TX Native PHY.
txphy_rcfg_busy Output 1 Indicates the TX PHY reconfiguration is in progress.
txphy_rcfg_slave_write Input 4 Transceiver reconfiguration Avalon® memory-mapped interface from the TX Native PHY to the transceiver arbiter.
txphy_rcfg_slave_read Input 4
txphy_rcfg_slave_address Input

40
txphy_rcfg_slave_writedata Input 128
txphy_rcfg_slave_readdata Output 128
txphy_rcfg_slave_waitrequest Output 4
TX Reconfiguration Management
tx_tmds_freq Input 24 HDMI TX TMDS clock frequency value (in 10 ms).
tx_os Output 2
Oversampling factor:
  • 0: 1x oversampling
  • 1: 2× oversampling
  • 2: 8x oversampling
txphy_rcfg_master_write Output 1 TX reconfiguration management Avalon® memory-mapped interface to transceiver arbiter.
txphy_rcfg_master_read Output 1
txphy_rcfg_master_address Output 12
txphy_rcfg_master_writedata Output 32
txphy_rcfg_master_readdata Input 32
txphy_rcfg_master_waitrequest Input 1
tx_reconfig_done Output 1 Indicates that the TX reconfiguration process is completed.
HDMI TX Core Signals
tx_vid_clk_locked Input 1 Indicates vid_clk is stable.
txcore_ctrl Input N*6

HDMI TX core control interfaces.

Note: N = pixels per clock

Refer to the Source Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

txcore_mode Input 1
txcore_audio_de Input 1

HDMI TX core audio interfaces.

Refer to the Source Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

txcore_audio_mute Input 1
txcore_audio_data Input 256
txcore_audio_info_ai Input 49
txcore_audio_N Input 20
txcore_audio_CTS Input 20
txcore_audio_metadata Input 166
txcore_audio_format Input 5
txcore_aux_ready Output 1

HDMI TX core auxiliary interfaces.

Refer to the Source Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

txcore_aux_data Input 72
txcore_aux_sop Input 1
txcore_aux_eop Input 1
txcore_aux_valid Input 1
txcore_gcp Input 6

HDMI TX core sideband signals.

Refer to the Source Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

txcore_info_avi Input 123
txcore_info_vsi Input 62
txcore_i2c_master_write Input 1

TX I2C master Avalon® memory-mapped interface to I2C master inside the TX core.

Note: These signals are available only when you turn on the Include I2C parameter.
txcore_i2c_master_read Input 1
txcore_i2c_master_address Input 4
txcore_i2c_master_writedata Input 32
txcore_i2c_master_readdata Output 32
txcore_vid_data Input N*48

HDMI TX core video ports.

Note: N = pixels per clock

Refer to the Source Interfaces section in the HDMI Intel® FPGA IP User Guide for more information.

txcore_vid_vsync Input N
txcore_vid_hsync Input N
txcore_vid_de Input N
txcore_vid_ready Output 1
txcore_vid_overflow Output 1
txcore_vid_valid Input 1
txcore_frl_rate Input 4 SCDC register interfaces.
txcore_frl_pattern Input 16
txcore_frl_start Input 1
txcore_scrambler_enable Input 1
txcore_tbcr Input 1
I2C Signals
nios_tx_i2c_sda_in Output 1

TX I2C Master interface for SCDC and DDC from the Nios® V processor to the output buffer.

Note: If you turn on the Include I2C parameter, these signals will be placed inside the TX core and will not be visible at this level.
nios_tx_i2c_scl_in Output 1
nios_tx_i2c_sda_oe Input 1
nios_tx_i2c_scl_oe Input 1
nios_ti_i2c_sda_in Output 1 TX I2C Master interface from the Nios® V processor to the output buffer to control TI redriver on the Bitec HDMI 2.1 FMC daughter card.
nios_ti_i2c_scl_in Output 1
nios_ti_i2c_sda_oe Input 1
nios_ti_i2c_scl_oe Input 1
hdmi_tx_i2c_sda Input 1 TX I2C interfaces for SCDC and DDC interfaces from the output buffer to the HDMI TX connector.
hdmi_tx_i2c_scl Input 1
hdmi_tx_ti_i2c_sda Input 1 TX I2C interfaces from the output buffer to the TI redriver on the Bitec HDMI 2.1 FMC daughter card.
hdmi_tx_ti_i2c_scl Input 1
Hotplug Detect Signals
tx_hpd_req Output 1 HDMI TX hotplug detect interfaces.
hdmi_tx_hpd_n Input 1
Table 19.  Transceiver Arbiter Signals
Signal Direction Width Description
clk Input 1 Reconfiguration clock. This clock must share the same clock with the reconfiguration management blocks.
reset Input 1 Reset signal. This reset must share the same reset with the reconfiguration management blocks.
rx_rcfg_en Input 1 RX reconfiguration enable signal.
tx_rcfg_en Input 1 TX reconfiguration enable signal.
rx_rcfg_ch Input 2 Indicates which channel to be reconfigured on the RX core. This signal must always remain asserted.
tx_rcfg_ch Input 2 Indicates which channel to be reconfigured on the TX core. This signal must always remain asserted.
rx_reconfig_mgmt_write Input 1 Reconfiguration Avalon® memory-mapped interfaces from the RX reconfiguration management.
rx_reconfig_mgmt_read Input 1
rx_reconfig_mgmt_address Input

10
rx_reconfig_mgmt_writedata Input 32
rx_reconfig_mgmt_readdata Output 32
rx_reconfig_mgmt_waitrequest Output 1
tx_reconfig_mgmt_write Input 1 Reconfiguration Avalon® memory-mapped interfaces from the TX reconfiguration management.
tx_reconfig_mgmt_read Input 1
tx_reconfig_mgmt_address Input

10
tx_reconfig_mgmt_writedata Input 32
tx_reconfig_mgmt_readdata Output 32
tx_reconfig_mgmt_waitrequest Output 1
reconfig_write Output 1 Reconfiguration Avalon® memory-mapped interfaces to the transceiver.
reconfig_read Output 1
reconfig_address Output

10
reconfig_writedata Output 32
rx_reconfig_readdata Input 32
rx_reconfig_waitrequest Input 1
tx_reconfig_readdata Input 1
tx_reconfig_waitrequest Input 1
rx_cal_busy Input 1 Calibration status signal from the RX transceiver.
tx_cal_busy Input 1 Calibration status signal from the TX transceiver.
rx_reconfig_cal_busy Output 1 Calibration status signal to the RX transceiver PHY reset control.
tx_reconfig_cal_busy Output 1 Calibration status signal from the TX transceiver PHY reset control.
Table 20.  RX-TX Link Signals
Signal Direction Width Description
vid_clk Input 1 HDMI video clock.
rx_vid_lock Input 3 Indicates HDMI RX video lock status.
rx_vid_valid Input 1 HDMI RX video interfaces.
rx_vid_de Input N
rx_vid_hsync Input N
rx_vid_vsync Input N
rx_vid_data Input N*48
rx_aux_eop Input 1 HDMI RX auxiliary interfaces.
rx_aux_sop Input 1
rx_aux_valid Input 1
rx_aux_data Input 72
tx_vid_de Output N HDMI TX video interfaces.
Note: N = pixels per clock
tx_vid_hsync Output N
tx_vid_vsync Output N
tx_vid_data Output N*48
tx_vid_valid Output 1
tx_vid_ready Input 1
tx_aux_eop Output 1 HDMI TX auxiliary interfaces.
tx_aux_sop Output 1
tx_aux_valid Output 1
tx_aux_data Output 72
tx_aux_ready Input 1
Table 21.   Platform Designer System Signals
Signal Direction Width Description
cpu_clk_in_clk_clk Input 1 CPU clock.
cpu_rst_in_reset_reset Input 1 CPU reset.
edid_ram_slave_translator_avalon_anti_slave_0_address Output 8 EDID RAM access interfaces.
edid_ram_slave_translator_avalon_anti_slave_0_write Output 1
edid_ram_slave_translator_avalon_anti_slave_0_read Output 1
edid_ram_slave_translator_avalon_anti_slave_0_readdata Input 8
edid_ram_slave_translator_avalon_anti_slave_0_writedata Output 8
edid_ram_slave_translator_avalon_anti_slave_0_waitrequest Input 1
hdmi_i2c_master_i2c_serial_sda_in Input 1 I2C Master interfaces from the Nios® V processor to the output buffer for DDC and SCDC control.
hdmi_i2c_master_i2c_serial_scl_in Input 1
hdmi_i2c_master_i2c_serial_sda_oe Output 1
hdmi_i2c_master_i2c_serial_scl_oe Output 1
redriver_i2c_master_i2c_serial_sda_in Input 1 I2C Master interfaces from the Nios® V processor to the output buffer for TI redriver setting configuration.
redriver_i2c_master_i2c_serial_scl_in Input 1
redriver_i2c_master_i2c_serial_sda_oe Output 1
redriver_i2c_master_i2c_serial_scl_oe Output 1
pio_in0_external_connection_export Input 32

Parallel input output interfaces.

  • Bit 0: Connected to the user_dipsw signal to control EDID passthrough mode.
  • Bit 1: TX HPD request
  • Bit 2: TX transceiver ready
  • Bits 3: TX reconfiguration done
  • Bits 4–7: Reserved
  • Bits 8–11: RX FRL rate
  • Bit 12: RX TMDS bit clock ratio
  • Bits 13–16: RX FRL locked
  • Bits 17–20: RX FFE levels
  • Bit 21: RX alignment locked
  • Bit 22: RX video lock
  • Bit 23: User push button 2 to read SCDC registers from external sink
  • Bits 24–31: Reserved
pio_out0_external_connection_export Output 32

Parallel input output interfaces.

  • Bit 0: TX HPD acknowledgment
  • Bit 1: TX initialization is done
  • Bits 2–7: Reserved
  • Bits 8–11: TX FRL rate
  • Bits 12–27: TX FRL link training pattern
  • Bit 28: TX FRL start
  • Bits 29–31: Reserved
pio_out1_external_connection_export Output 32

Parallel input output interfaces.

  • Bit 0: RX EDID RAM access
  • Bit 1: RX FLT ready
  • Bits 2–7: Reserved
  • Bits 8–15: RX FRL source test configuration
  • Bits 16–31: Reserved
Level Two Title