Datasheet

2−38
2.20.43 Status Register #1
Address 88h
7 6 5 4 3 2 1 0
Peak white
detect status
Line-alternating
status
Field rate
status
Lost lock
detect
Color subcarrier
lock status
Vertical sync
lock status
Horizontal sync
lock status
TV/VCR status
Peak white detect status:
0 = Peak white is not detected.
1 = Peak white is detected.
Line-alternating status:
0 = Nonline alternating
1 = Line alternating
Field rate status:
0 = 60 Hz
1 = 50 Hz
Lost lock detect:
0 = No lost lock since status register #1 was last read.
1 = Lost lock since status register #1 was last read.
Color subcarrier lock status:
0 = Color subcarrier is not locked.
1 = Color subcarrier is locked.
Vertical sync lock status:
0 = Vertical sync is not locked.
1 = Vertical sync is locked.
Horizontal sync lock status:
0 = Horizontal sync is not locked.
1 = Horizontal sync is locked.
TV/VCR status. TV mode is determined by detecting standard line-to-line variations and specific chroma SCH phases
based on the standard input video format. VCR mode is determined by detecting variations in the chroma SCH phases
compared to the chroma SCH phases of the standard input video format.
0 = TV
1 = VCR