參數(shù)資料
型號(hào): CH7012A
廠商: Electronic Theatre Controls, Inc.
英文描述: Chrontel CH7012 TV Output Device
中文描述: 昆泰CH7012電視輸出設(shè)備
文件頁數(shù): 24/42頁
文件大小: 551K
代理商: CH7012A
CHRONTEL
CH7012A
24
201-0000-042 Rev. 1.1, 9/29/2000
Flicker Filter Register
Symbol:
FF
Address:
01h
Bits:
8
Bits 1-0 of register FF control the filter used in the scaling and flicker reduction block applied to the non-text
portion of the luminance signal as shown in
Table 12
below.
Bits 3-2 of register FF control the filter used in the scaling and flicker reduction block applied to the text
portion of the luminance signal as shown in
Table 12
below.
Bits 5-4 of register FF control the filter used in the scaling and flicker reduction block applied to the
chrominance signal as shown in
Table 13
below. A setting of ‘11’ applies a dot crawl reduction filter which
can reduce the ‘hanging dots’ effect of an NTSC composite video signal when displayed on a TV with a comb
filter.
Bit 6 of register FF controls the video output format. A value of ‘0’ generates composite and S-Video outputs. A
value of ‘1’ generates RGB outputs.
Table 11: Video Output Standard Selection
VOS[1:0]
Output Format
00
PAL
01
NTSC
10
PAL-M
11
NTSC-J
BIT:
7
6
5
4
3
2
1
0
SYMBOL:
TYPE:
DEFAULT:
VOF
R/W
CFF1
R/W
CFF0
R/W
YFFT1
R/W
YFFT0 YFFNT1
R/W
1
YFFNT0
R/W
R/W
0
1
0
0
1
1
Table 12: Luma Flicker Filter Control
YFFT and YFFNT Flicker Filter Settings (lines)
00
01
2
3
2
3
2
3
3
4
3
5
Scaling Ratio
5/4
1/1, 7/8, 5/6, 3/4, 5/7, 7/10
5/8
5/9
1/2
10
3
4
4
5
5
11
3
5
6
6
7
Table 13: Chroma Flicker Filter Control
CFF Flicker Filter Settings (lines)
00
01
2
3
2
3
2
3
3
4
3
5
Scaling Ratio
5/4
1/1, 7/8, 5/6, 3/4, 5/7, 7/10
5/8
5/9
1/2
10
3
4
4
5
5
11
3
5
5
6
7
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