Owner manual

CS4954 CS4955
40 DS278F6
Control Register 2
Address 0×02 CONTROL_2 Read/Write Default Value = 00h
Bit Number
76543210
Bit Name
OUTPUT FORMAT TTX WST TTX EN SYNC_DLY XTAL SC_EN
Default
00000000
Bit Mnemonic Function
7:5 OUTPUT FORMAT
selects the output through the DACs
000 : rgb, s-video, composite1 (6 DACs) (default)
001 : yuv, s-video, composite1 (6 DACs)
010 : s-video, composite1, composite2, (4 DACs)
011 : rgb, composite1, composite2 (5 DACs)
100 : yuv, composite1, composite2 (5 DACs)
101-111: don’t care
4TTX WST
To select between world standard (NTSC), world standard (PAL), or north
american teletext standard during NTSC or PAL modes (1 = WST TTX) (default
is 0)
In NTSC-M or PAL-M mode. This bit works in conjunction with the TV
FORMAT
register.
0: NABTS, if TV
FORMAT is NTSC or PAL-M
1: WST (NTSC), if TV
FORMAT is NTSC or PAL-M
0: Europe TTX, if TV
FORMAT is PAL-B, G..., N
1: WST (PAL), if TV
FORMAT is PAL-B, G, ..., N
3TTX EN
Enable teletext process (1 = enable)
2 SYNC DLY
Slave mode 1 pixel sync delay (1 = enable)
1XTAL
Crystal oscillator for subcarrier adjustment enable (1 = enable)
0BU DIS
Chroma burst disable (1 = disable)