Closed-Caption Decoder
Closed-Caption Decoder Registers
MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company
237
Panasonic
For designs using the closed-cap-
tion decoder, always tie the FCCNT
register to x’0008’.
FCCNT: VBI Decoding Format Select Register x’007E00’
(FCCNTW x’007E20’)
This register contains the settings for selecting either a hardware or soft-
ware slice level and for setting the data capture format. When you do not
use a bit or field in this register, tie it to the setting indicated below.
FCPSEL: Hard/soft sampling start position select
0: Select hardware calculation
1: Select software setting (set in SFTSTAP[10:0] field of STAP)
SYNCSEL: Sync signal select (HSYNC/VSYNC)
Tie this bit to 0.
HCNTSEL[1:0]: HSYNC count value select
When this field is unused, tie it to b’00’.
00:When odd, add 1 to the HSYNC count value
01:When even, add 1 to the HSYNC count value
10:No change to the HSYNC count value
11:Reserved
SLICESEL: Hard/soft slice level select
0: Select hardware calculation
1: Select software setting
SLICELD[2:0]: Slice level load timing se le ct
When this field is unused, tie it to b’000’.
000: 1H 100: 1 field
001: 2H 101: 2 fields
010: 4H 110: 4 fields
011: 8H 111: 8 fields
SLPULSEL: Polarity select for the CRI cycle transition detection
0: Detect 0 to 1 transitions
1: Detect 1 to 0 transitions
CRICSEL: Detection interval select for the CRI frequency width
0: CRI capture interval only
1: CRI capture interval and transition detection interval
NCRIGSEL: Sampling pulse generation interval
0: Disable the CRI capture interval
1: Enable the CRI capture interval
CNTSTAP[4:0]: Caption data sampling start position
The higher the setting in this field, the later the start position. The valid
range is x’00’ to x’1F’.
Bit:1514131211109876543210
FCP
SEL SYNC
SEL HCNT
SEL1 HCNT
SEL0 SLICE
SEL SLICE
LD2 SLICE
LD1 SLICE
LD0
SLPU
L
SEL
CRIC
SEL
NCRI
G
SEL
CNT
STAP4 CNT
STAP3 CNT
STAP2 CNT
STAP1 CNT
STAP0
Reset:0000000000001000
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W