HMP8116 Intersil Corporation, HMP8116 Datasheet - Page 28

• Manufacturer Part Number: HMP8116
• Description: Ntsc/pal Video Decoder
• Manufacturer: Intersil Corporation

NO.
NO.
BIT
BIT
7-6
5-4
3-2
1-0
7-6
5-4
3-2
1-0
Y Filtering
Select
Black Level Y
Coring Select
High Frequency Y
Coring Select
Sharpness
Frequency Select
Sliced
Closed Captioning
Enable
Sliced
WSS Enable
Sliced
Teletext
Enable
Reserved
FUNCTION
FUNCTION
The chroma trap filter may be used to remove any residual color subcarrier information
from the Y channel. During S-video operation, it should be disabled. During PAL opera-
tion, it should be enabled. The 3MHz lowpass filter may be used to remove high-frequency
noise.
00 = No filtering
01 = Enable chroma trap filter
10 = Enable 3.0MHz lowpass filter
11 = reserved
Coring may be used to reduce low-level noise around black in the Y signal.
00 = No coring
01 = 1 code coring
10 = 2 code coring
11 = 3 code coring
Coring may be used to reduce high-frequency low-level noise in the Y signal.
00 = No coring
01 = 1 code coring
10 = 2 code coring
11 = 3 code coring
If a value of “01” or “10”, the sharpness adjust register is used to specify the amount of
sharpness to be applied.
00 = Bypass sharpness control
01 = Maximum gain at 2.6MHz
10 = Maximum gain at color subcarrier frequency
11 = reserved
00 = Closed caption disabled
01 = Closed caption enabled for odd fields: line 21 for NTSC, line 18 for (M) PAL, or line
10 = Closed caption enabled for even fields: line 284 for NTSC, line 281 for (M) PAL, or
11 = Closed caption enabled for both odd and even fields
00 = WSS disabled
01 = WSS enabled for odd fields: line 20 for NTSC; line 17 for (M) PAL, or line 23 for (B,
10 = WSS enabled for even fields: line 283 for NTSC, line 280 for (M) PAL, or line 336 for
11 = WSS enabled for both odd and even fields
00 = Teletext disabled
01 = Teletext system B enabled
10 = Teletext system C enabled
11 = Teletext system D enabled
TABLE 18. SLICED VBI DATA ENABLE REGISTER
22 for (B, D, G, H, I, N, N
line 335 for (B, D, G, H, I, N, N
D, G, H, I, N, N
(B, D, G, H, I, N, N
TABLE 17. LUMA PROCESSING REGISTER
SUB ADDRESS = 0A
SUB ADDRESS = 08
C
) PAL
HMP8116
C
) PAL
28
C
) PAL
DESCRIPTION
DESCRIPTION
C
) PAL
H
H
RESET
RESET
STATE
STATE
00
00
01
00
00
00
00
00
B
B
B
B
B
B
B
B