參數(shù)資料
型號(hào): CH7008A-V
廠商: Electronic Theatre Controls, Inc.
英文描述: Digital PC to TV Encoder Features
中文描述: 數(shù)字電視編碼器電腦功能
文件頁(yè)數(shù): 29/49頁(yè)
文件大?。?/td> 341K
代理商: CH7008A-V
201-0000-027 Rev 2.2, 9/30/99
29
CHRONTEL
CH7008A
Register Descriptions
(continued)
Display Mode Register
A
ddress: 00H
Bits: 8
This register provides programmable control of the CH7008 display mode, including input resolution (IR[2:0]),
output TV standard (VOS[1:0]), and scaling ratio (SR[2:0]). The mode of operation is determined according to the
table below (default is 640x480 input, NTSC output, 7/8’s scaling).
Bit:
Symbol:
Type:
Default:
7
IR2
6
IR1
5
IR0
4
VOS1
3
VOS0
2
SR2
1
SR1
0
SR0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
1
1
0
1
0
1
0
Table 13.
Display Modes
Mode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25*
26*
* Interlaced modes of operation. (For those modes, some functions will be bypassed. For details, please contact the
application department.)
IR[2:0]
000
000
000
000
001
001
001
001
010
010
010
010
010
011
011
011
011
011
011
100
100
100
100
100
100
101
101
VOS
[1:0]
00
00
01
01
00
00
01
01
00
00
01
01
01
00
00
00
01
01
01
00
00
00
01
01
01
00
01
SR
[2:0]
000
001
000
001
000
001
000
001
010
001
000
001
010
000
001
011
001
010
011
001
011
100
011
100
101
001
001
Input Data
Format
(Active
Video)
512x384
512x384
512x384
512x384
720X400
720x400
720x400
720x400
640x400
640x400
640x400
640x400
640x400
640x480
640x480
640x480
640x480
640x480
640x480
800x600
800x600
800x600
800x600
800x600
800x600
720x576
720x480
Total
Pixels/Line
x Total
Lines/Frame
840x500
840x625
800x420
784x525
1125X500
1116x625
945x420
936x525
1000x500
1008x625
840x420
840x525
840x600
840x500
840x625
840x750
784x525
784x600
800x630
944x625
960x750
936x836
1040x630
1040x700
1064x750
864x625
858x525
Output
Format
PAL
PAL
NTSC
NTSC
PAL
PAL
NTSC
NTSC
PAL
PAL
NTSC
NTSC
NTSC
PAL
PAL
PAL
NTSC
NTSC
NTSC
PAL
PAL
PAL
NTSC
NTSC
NTSC
PAL
NTSC
Scaling
5/4
1/1
5/4
1/1
5/4
1/1
5/4
1/1
5/4
1/1
5/4
1/1
7/8
5/4
1/1
5/6
1/1
7/8
5/6
1/1
5/6
3/4
5/6
3/4
7/10
1/1
1/1
Pixel Clock
(MHz)
21.000000
26.250000
20.139860
24.671329
28.125000
34.875000
23.790210
29.454545
25.000000
31.5000000
21.146853
26.433566
30.209790
21.000000
26.250000
31.5000000
24.671329
28.195804
30.209790
29.500000
36.0000000
39.000000
39.272727
43.636364
47.832168
13.500000
13.500000
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