ch7019 Chrontel, ch7019 Datasheet - Page 36

• Manufacturer Part Number: ch7019
• Description: Ch7019 Tv Encoder / Lvds Transmitter
• Manufacturer: Chrontel

CHRONTEL
3.3
Display Mode Register
Register DM provides programmable control of the CH7019 VGA to TV display mode, including input resolution
(IR[2:0]), video output standard (VOS[1:0]), and scaling ratio (SR[2:0]). The mode of operation is determined according
to Table 18 below. Entries in which the output standard is shown as PAL, PAL-B,D,G,H,I,N,N
through proper selection of the chroma sub-carrier. Entries in which the output standard is shown as NTSC, NTSC-M,J
and PAL-M can be supported through proper selection of VOS[1:0] and chroma sub-carrier.
36
SYMBOL
DEFAUL
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
27
28
29
30
Table 18: Display Modes
TYPE:
BIT:
Non-Macrovision Control Registers Description
T
:
R/W
IR2
IR[2:0]
7
0
000
000
000
000
001
001
001
001
010
010
010
010
010
011
011
011
011
011
011
100
100
100
101
101
101
110
110
110
110
110
110
VOS
[1:0]
00
00
01
01
00
00
01
01
00
00
01
01
01
00
00
00
01
01
01
01
01
01
00
00
00
00
00
00
01
01
01
R/W
IR1
6
1
SR[2:0]
000
001
000
001
000
001
000
001
000
001
000
001
010
000
001
011
001
010
011
001
010
011
001
011
100
001
011
100
110
111
101
R/W
IR0
Input Data
Format
(Active
Video)
512x384
512x384
512x384
512x384
720x400
720x400
720x400
720x400
640x400
640x400
640x400
640x400
640x400
640x480
640x480
640x480
640x480
640x480
640x480
720x480
720x480
720x480
720x576
720x576
720x576
800x600
800x600
800x600
800x600
800x600
800x600
5
1
VOS1
R/W
Lines/Frame
1125x500
1152x625
1000x500
1008x625
1040x700
1064x750
1040x840
Pixels/Line
840x500
840x625
800x420
784x525
945x420
936x525
840x420
832x525
840x600
840x500
840x625
840x750
784x525
784x600
800x630
882x525
882x600
900x630
882x625
900x750
900x875
944x625
960x750
960x875
4
0
x Total
Total
VOS0
R/W
Standard]
Standard
Output
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
NTSC
1
3
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
PAL
[TV
Symbol:
Address:
Bits:
201-0000-048
Scaling
R/W
SR2
7/10
5/4
1/1
1/1
5/4
5/4
1/1
7/8
5/4
1/1
5/6
7/8
5/6
7/8
5/6
1/1
5/6
5/7
1/1
5/6
5/7
5/4
5/4
1/1
1/1
5/4
1/1
1/1
1/1
5/8
¾
2
0
Overscan
Percent
-17
-33
-20
-13
-30
-16
-13
-30
-17
-27
-17
-30
-13
-18
-13
-18
-18
-30
-14
-27
-14
-22
C
+4
+4
+4
+4
-6
0
0
0
0
R/W
SR1
can be supported
DM
00h
8
Rev. 2.4, 12/18/2006
1
1
Pixel Clock (MHz)
CH7019B
21.000000
26.250000
24.671329
23.790210
29.454545
21.146854
26.181819
30.209791
21.000000
26.250000
31.500000
28.195805
30.209790
31.720280
33.986015
27.562500
33.750000
39.375000
29.500000
36.000000
42.000000
47.832169
52.363637
20.139860
28.125000
36.000000
25.000000
31.500000
24.671329
27.755245
43.636364
R/W
SR0
0
0