ADV8003 Hardware Manual
Rev. B, August 2013
298
Function
use_all_bufs
Description
0
Use only buffer 0 to store CEC frames (legacy mode)
1
Use all three buffers to store the CEC frames (non-legacy mode)
For each of the frame buffers there is a corresponding two-bit time stamp and a raw flag as described below.
buf0_timestamp[1:0]
, TX2 CEC Map,
Address 0xF826[1:0] (Read Only)
This signal is used to readback the time stamp for the frame stored in Rx frame buffer 0. This can be used to determine which frame
should be read next from the Rx frame buffers.
Function
buf0_timestamp[1:0]
Description
00
Invalid timestamp, no frame available in this frame buffer
01
Of frames currently buffered, this frame was first received
10
Of frames currently buffered, this frame was second received
11
Of frames currently buffered, this frame was third received
buf1_timestamp[1:0]
, TX2 CEC Map,
Address 0xF826[3:2] (Read Only)
This signal is used to readback the time stamp for the frame stored in Rx frame buffer 1. This can be used to determine which frame
should be read next from the Rx frame buffers.
Function
buf1_timestamp[1:0]
Description
00
Invalid timestamp, no frame is available in this frame buffer
01
Of frames currently buffered, this frame was first received
10
Of frames currently buffered, this frame was second received
11
Of frames currently buffered, this frame was third received
buf2_timestamp[1:0]
, TX2 CEC Map,
Address 0xF826[5:4] (Read Only)
This signal is used to readback the time stamp for the frame stored in Rx frame buffer 2. This can be used to determine which frame
should be read next from the Rx frame buffers.
Function
buf2_timestamp[1:0]
Description
00
Invalid timestamp, no frame is available in this frame buffer
01
Of frames currently buffered, this frame was first received
10
Of frames currently buffered, this frame was second received
11
Of frames currently buffered, this frame was third received
cec_rx_ready_int[2:0]
, TX2 Main Map,
Address 0xF497[2:0]
This bit is used to readback and control the CEC RX Ready interrupt.
Function
cec_rx_ready_int[2:0]
Description
000
CEC Ready interrupt not active
111
CEC Ready interrupt active. CEC controller is indicating that the RX has received a new
message
When a message (other than a polling message) is received, it is loaded into the first available frame buffer (starting with buffer 0) and a
two-bit time stamp is generated for that buffer. If the corresponding interrupt mask bit is set, the status bit relating to that buffer is set and
Summary of Contents for ADV8003
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