Closed-Caption Decoder
Closed-Caption Decoder Registers
MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company

239

Panasonic

HNUM: HSYNC Count Register x’007E06’

(HNUMW x’007E26’)

This register allows you to time the interrupt occurring after the line 21 data capture to a line other than line 21.

VBIIRQ[4:0]: VBI interrupt timing control

In this field, set the H line number, from 0 to 25, for the VBI interrupt. You must set this field to x’13’ or higher.

SBFLAG: Start bit detection fla g

0: No start bit detected1: Start bit detected

HNUM[4:0]: HSYNC count during the VBI interval

This field indicates the H line number, from 0 to 25.

For designs using the closed-cap-

tion decoder, always tie the ACQ1

register to x’1312’.

ACQ1: ACQ Capture Timing Control Register 1 x’007E08’

(ACQ1W x’007E28’)

ACQ1E[4:0]: Stop position for ACQ capture 1

Valid range: x’00’ to x’25’

ACQ1S[4:0]: Start position for ACQ capture 1

Valid range: x’00’ to x’25’

CAPDATA: C a ption Data Capture Register x’007E0A’

(CAPDATAW x’007E2A’)

CAPDA[15:0]: Caption data

This register stores the 16-bit captured caption data.
Bit:1514131211109876543210
———
VBI-
IRQ
4
VBI-
IRQ
3
VBI-
IRQ
2
VBI-
IRQ
1
VBI-
IRQ
0
SB
FLAG ——
HNU
M4 HNU
M3 HNU
M2 HNU
M1 HNU
M0
Reset:0001111100000000
R/W:RRRR/WR/WR/WR/WR/WRRRRRRRR
Bit:1514131211109876543210
———
ACQ1
E4 ACQ1
E3 ACQ1
E2 ACQ1
E1 ACQ1
E0 ———
ACQ1
S4 ACQ1
S3 ACQ1
S2 ACQ1
S1 ACQ1
S0
Reset:0001111100011111
R/W: R R R R/W R/W R/W R/W R/W R R R R/W R/W R/W R/W R/W
Bit:1514131211109876543210
CAP
DA15 CAP
DA14 CAP
DA13 CAP
DA12 CAP
DA11 CAP
DA10 CAP
DA9 CAP
DA8 CAP
DA7 CAP
DA6 CAP
DA5 CAP
DA4 CAP
DA3 CAP
DA2 CAP
DA1 CAP
DA0
Reset:0000000000000000
R/W:RRRRRRRRRRRRRRRR