Audio AXI4-Stream Interface - 3.1 English - PG299

DisplayPort 1.4 TX Subsystem Product Guide (PG299)
Document ID
PG299
Release Date
2025-07-09
Version
3.1 English
Table 1. Audio AXI4-Stream Interface
Port Name I/O Description
m_aud_axis_aclk I AXI4-Stream clock
m_aud_axis_aresetn I Active-Low reset
aud_axi_egress_tdata[31:0] O AXI4-Stream data output

[3:0] - Preamble Code

  • 4'b0001: Subframe1/ Start of audio block
  • 4'b0010: Subframe 1
  • 4’b0011: Subframe 2

[27:4] - Audio Sample Word

[28] - Validity Bit (V)

[29] - User Bit (U)

[30] - Channel Status (C)

[31] - Parity (P)
aud_axi_egress_tid[7:0] O [3:0] - Audio Channel ID

[7:4] - Audio Packet Stream ID
aud_axi_egress_tvalid O Valid indicator for output audio data
aud_axi_egress_tready I Ready indicator from external audio receiver to RX subsystem