Datasheet

Functional Description
40
May 2006SLES043A
Line alternation changed:
0 = Line alteration has not changed (default).
1 = Line alternation has changed.
Color lock changed:
0 = Color lock status has not changed (default).
1 = Color lock status has changed.
H/V lock changed:
0 = H/V lock status has not changed (default).
1 = H/V lock status has changed.
TV/VCR changed:
0 = TV/VCR status has not changed (default).
1 = TV/VCR status has changed.
Interrupt status register B is polled by the external processor to determine the interrupt source for interrupt
B. After an interrupt condition is set, it can be reset by writing to the interrupt reset register B at subaddress
1Ch with a 1 in the appropriate bit.
3.22.38 Interrupt Active Register B
Address 87h
7 6 5 4 3 2 1 0
Reserved Interrupt B
Interrupt B:
0 = Interrupt B is not active on the external terminal (default).
1 = Interrupt B is active on the external terminal.
The interrupt active register B is polled by the external processor to determine if interrupt B is active.
3.22.39 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: