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| HMP8117 Datasheet, PDF (27/45 Pages) Intersil Corporation – NTSC/PAL Video Decoder | |||
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HMP8117
TABLE 19. SLICED VBI DATA ENABLE REGISTER
BIT
NO.
FUNCTION
SUB ADDRESS = 0AH
DESCRIPTION
RESET
STATE
7-6
Sliced
00 = Closed caption disabled
00B
Closed Captioning 01 = Closed caption enabled for odd fields: line 21 for NTSC, line 18 for (M) PAL, or line 22 for
Enable
(B, D, G, H, I, N, NC) PAL
10 = Closed caption enabled for even fields: line 284 for NTSC, line 281 for (M) PAL, or line 335
for (B, D, G, H, I, N, NC) PAL
11 = Closed caption enabled for both odd and even fields
5-4
Sliced
WSS Enable
00 = WSS disabled
00B
01 = WSS enabled for odd fields: line 20 for NTSC; line 17 for (M) PAL, or line 23 for (B, D, G,
H, I, N, NC) PAL
10 = WSS enabled for even fields: line 283 for NTSC, line 280 for (M) PAL, or line 336 for (B, D,
G, H, I, N, NC) PAL
11 = WSS enabled for both odd and even fields
3-2
Sliced Teletext
00 = Teletext disabled10 = Teletext system C enabled
00B
Enable
01 = Teletext system B enabled11 = Teletext system D enabled
1-0
Reserved
00B
TABLE 20. SLICED VBI DATA OUTPUT REGISTER
BIT
NO.
FUNCTION
SUB ADDRESS = 0BH
DESCRIPTION
RESET
STATE
7
Sliced Closed
If set to â1â, this bit enables output of sliced closed captioning via BT.656 ancillary data.
0B
Caption BT.656
Output
Closed captioning must be enabled by the Sliced VBI Data Enable register 0AH.
Access via the I2C interface is always available.
Enable
6
Sliced WSS
If set to â1â, this bit enables output of sliced WSS via BT.656 ancillary data.
0B
BT.656 Output
Enable
WSS must be enabled by the Sliced VBI Data Enable register 0AH.
Access via the I2C interface is always available.
5
Sliced Teletext
If set to â1â, this bit enables output of sliced teletext via BT.656 ancillary data.
0B
BT.656 Output
Teletext data is not available via the I2C interface.
Enable
4-1
Reserved
0
RTCI BT.656
Output Enable
If set to â1â, this bit enables output of RTCI data as BT.656 ancillary data.
0000B
0B
TABLE 21. VBI DATA STATUS REGISTER
BIT
NO.
FUNCTION
SUB ADDRESS = 0CH
DESCRIPTION
7
CC Odd Field
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to â1â, Closed Captioning (CC) data is detected on the odd field.
6
CC Even Field
This bit is read-only. Data written to this bit is ignored.
Detect Status
If set to â1â, Closed Captioning (CC) data is detected on the even field.
5
WSS Odd Field
This bit is read-only. Data written to this bit is ignored.
Detect Status
If set to â1â, Wide Screen Signalling (WSS) data is detected on the odd field.
4
WSS Even Field This bit is read-only. Data written to this bit is ignored.
Detect Status
If set to â1â, Wide Screen Signalling (WSS) data is detected on the even field.
3
VBI Teletext
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to â1â, Teletext data is detected during the vertical blanking interval.
2-0
Reserved
RESET
STATE
0B
0B
0B
0B
0B
000B
27
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