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STV2310 数据表(PDF) 46 Page - STMicroelectronics |
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STV2310 数据表(HTML) 46 Page - STMicroelectronics |
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46 / 112 page  Functional Description STV2310 46/112 In both cases, two filler bytes are added immediately after the last meaningful User Data Word in order to maintain a Data Count value that is a multiple of 4 bytes. All UDW bytes are coded according to the parity protection scheme defined in SMPTE 291M or ITU-R BT.1364 specifications, as applied to 8-bit coded data (i.e. bit 6 is the even parity check of bits 0 to 5 and bit 7 is bit 6 complement to1). Note: “FIL1” and “FIL2” stand for Filler Bytes 1 and 2. Page Byte Coding Bit 6 1’s complement Even parity check for bits [5:0] Always 0 Page value Table 17: UDW Coding for WST Frame Code ADF DID SDID DC MAG PAGE Other UDW Bytes FIL1 FIL2 CS WST - 625 lines/50 Hz 27h Byte.count 3 1 1 1 1 1 80 1 1 1 WST - 625 lines/50 Hz xxh Byte.count 3 1 1 1 0 0 84 0 0 1 WST - 525 lines/60 Hz 27h Byte.count 3 1 1 1 1 1 64 1 1 1 WST - 525 lines/60 Hz xxh Byte.count 3 1 1 1 0 0 68 0 0 1 Table 18: UDW Byte Contents Byt e 625 lines / 50 Hz Content (Framing = 27h) 625 lines / 50 Hz Content (Custom Framing) Byt e 525 lines / 60 Hz Content (Framing = 27h) 525 lines / 60 Hz Content (Custom Framing) 1 Decoded Magazine value LSB of Raw sliced 1st byte 1 Decoded Magazine value LSB of Raw sliced 1st byte 2 Decoded Page value MSB of Raw sliced 1st byte 2 Decoded Page value MSB of Raw sliced 1st byte 3 LSB of 1st data byte LSB of Raw sliced 2nd byte 3 LSB of 1st data byte LSB of Raw sliced 2nd byte 4 MSB of 1st data byte MSB of Raw sliced 2nd byte 4 MSB of 1st data byte MSB of Raw sliced 2nd byte 5 LSB of 2nd data byte LSB of Next raw byte 5 LSB of 2nd data byte LSB of Next raw byte 6 MSB of 2nd data byte MSB of Next raw byte 6 MSB of 2nd data byte MSB of Next raw byte …… … … … … …… … 67 LSB of 32nd data byte LSB of Last raw byte 83 LSB of 40th data byte LSB of Last raw byte 68 MSB of 32nd data byte MSB of Last raw byte 84 MSB of 40th data byte MSB of Last raw byte … … … Table 16: Magazine and Page Coding Bit 7 6 5432 10 |
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