9.15.2010

Serial TS (Transport Stream) bus signal definition

Serial Type Transport Stream 的信號 pin 有:
  • TSCLK : clock
  • TSO : Data
  • TSEN : TS valid (有點類似 chip select)
  • TSPAC : Syn Byte (在送出 sync byte 的data 時會有動作)
  • TSER : TS Packet Error flag (packet 有 error 時會有動作)
Transport Stream 分為 3 部份:

Sync --- Stream Data -- Pariry

其中 Sync + Stream Data == 188 byte
Parity 有 16 byte

一般的 chip 可以指定 TSEN 要不要把 parity 的data 也算進去。
另外,除了 stream packet 外,在沒有信號,或是有 error 時,會有 NULL packet。
也可以決定在送 null packet 時,clock 要不要動作。

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