Datasheet

2−32
2.20.27 Interrupt Reset Register B
Address 1Ch
Default 00h
7 6 5 4 3 2 1 0
Software
initialization
reset
Macrovision
detect changed
reset
Reserved
Field rate
changed reset
Line alternation
changed reset
Color lock
changed reset
H/V lock
changed reset
TV/VCR
changed reset
Interrupt reset register B is used by the external processor to reset the interrupt status bits in interrupt status
register B. Bits loaded with a 1 allow the corresponding interrupt status bit to reset to 0. Bits loaded with a 0 have no
effect on the interrupt status bits.
Software initialization reset:
0 = No effect (default)
1 = Reset software initialization bit
Macrovision detect changed reset:
0 = No effect (default)
1 = Reset Macrovision detect changed bit
Field rate changed reset:
0 = No effect (default)
1 = Reset field rate changed bit
Line alternation changed reset:
0 = No effect (default)
1 = Reset line alternation changed bit
Color lock changed reset:
0 = No effect (default)
1 = Reset color lock changed bit
H/V lock changed reset:
0 = No effect (default)
1 = Reset H/V lock changed bit
TV/VCR changed reset [TV/VCR mode is determined by counting the total number of lines/frame. The mode switches
to VCR for nonstandard number of lines]:
0 = No effect (default)
1 = Reset TV/VCR changed bit