How is proper framing applied while using the CLC011 with non-SMPTE data?
In the SMPTE application for which this device was designed, the pattern 3FFh, 000h, 000h is used at the start and end of each video line as a Timing Reference Signal (TRS). The CLC011 uses this pattern to determine the framing (where to place the word boundaries). If this pattern is seen in a non-SMPTE application, the CLC011 will readjust its framing and the received words will be shifted. In a non-SMPTE application, an initialization pattern of 3FFh, 000h, 000h should be sent to sync up the CLC011. Then the FE (Frame Enable) input on the CLC011 should be taken to a low state, which will prevent it from realigning the word boundary if it sees this pattern again in the data being transmitted.
