Mode Detection; Table 87: Value Taken By Each Data Unit In Mode 3 Frame - Analog Devices Advantiv ADV7604 Hardware Manual

Table 87: Value Taken by Each Data Unit in Mode 3 Frame

The frame header stores the three bits of the application identifier. The frame data registers (refer to
Table 80) store the data payload of the application block.
The AV.link specification mentions a maximum frame size of 100 bits. Excluding the three bits for
the start sequence and the three bits for the Application ID, the remaining 94 bits of the application
block are the frame data registers.
The host specifies the length of the frame in the AVL_TX_FRAME_LENGTH register. The frame
length is defined as the number of frame data buffers that are required to be transmitted.

13.7 Mode Detection

The AV.link receiver module performs a mode detection of the incoming frame bits. After the Start
bit is encountered, the receiver enters the receive state where the incoming bits are checked for the
start sequence. The decoding starts with an invalid state 2b11 and, by the end of reception of the
third bit, the decoding of the mode is expected to be over. Otherwise, the receiver returns to the
invalid state and the message is not received.
Rev. F August 2010
Frame Type Value
(Binary Format)
Header xxxxxbbb
Frame data 0 xxbbbbbb
Frame data 1 bbbbbbbb
Frame data 2 bbbbbbbb
Frame data 3 bbbbbbbb
Frame data 4 bbbbbbbb
Frame data 5 bbbbbbbb
Frame data 6 bbbbbbbb
Frame data 7 bbbbbbbb
Frame data 8 bbbbbbbb
Frame data 9 bbbbbbbb
Frame data 10 bbbbbbbb
Frame data 11 bbbbbbbb
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ADV7604