Closed-Caption Decoder
Closed-Caption Decoder Registers
MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company
247
Panasonic
HDISTW: Sync Separator Detection Control Register 2 x’007ED 6’
HDISTWW x’007EF6’)
HDISTW[8:0]: HSYNC count setting the interval for sync separation detection
In this register, set the interval during which sync separation occurs. The valid range is x’000’ to x’1FF’ and the recommended setting is x’0100’. For NTSC format, set the register to 525 (dec), indicating an HSYNC count of 525 VSYNC cycles. The recommended setting is x’0100’.
VCNT: VSYNC Separator Control Register x’007ED8’
(VCNTW x’007EF8’)
VSEPSEL: VSYNC signal select
0: 0H to 127H VSYNC separation mask1: No mask
VSEPLMT[2:0]: VSYNC separation detection threshold
HVCOND: Sync Separator Status Register x’007EDA’
(HVCONDW x’007EFA’)
Use this register to monitor the status of the sync separator.
STPN: Status of clamping control pulse signal during STOP
COMPSY: Composite sync signal status
VSEP: VSYNC signal status
HSEP: HSYNC signal status
HLOCK: Sync detection
0: Asynchronous1: Synchronous
Bit:1514131211109876543210
———————
HDIST
W8 HDIST
W7 HDIST
W6 HDIST
W5 HDIST
W4 HDIST
W3 HDIST
W2 HDIST
W1 HDIST
W0
Reset:0000000100000000
R/W:RRRRRRRR/WR/WR/WR/WR/WR/WR/WR/WR/W
Bit:1514131211109876543210
———————
VSEP
SEL —————
VSEP
LMT2 VSEP
LMT1 VSEP
LMT0
Reset:0000000000000101
R/W:RRRRRRRR/WRRRRRR/WR/WR/W
Bit:76543 210
———STPN
COMP
SY VSEP HSE P HLOCK
Reset:00011000
R/W:RRRRRRRR