TVP5146PFP 参数 Datasheet PDF下载

2.11.84 Interrupt Raw Status 1 Register

Subaddress

F1h

Read only

7

6

5

Reserved

4

3

2

Macrovision status changed

1

Standard changed

0

FIFO full

Macrovision status changed: unmasked

0 = Macrovision status unchanged

1 = Macrovision status changed

Standard changed: unmasked

0 = Video standard unchanged

1 = Video standard changed

FIFO full unmasked: unmasked

0 = FIFO not full

1 = FIFO was full during write to FIFO

The FIFO full error flag is set when the current line of VBI data cannot enter the FIFO. For example, if the FIFO has

only 10 bytes left and teletex is the current VBI line, then the FIFO full error flag is set, but no data is written because

the entire teletex line does not fit. However, if the next VBI line is closed caption requiring only 2 bytes of data plus

the header, then this goes into the FIFO even if the full error flag is set.

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