Closed-caption decoder, Tie this bit to 0 – Lucent Technologies MN10285K User Manual
Page 238
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 select
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:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
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:
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
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