Control register 2 – Cirrus Logic CS4955 User Manual
Page 40
CS4954 CS4955
40
DS278F6
Control Register 2
Address
0
×
02
CONTROL_2
Read/Write
Default Value = 00h
Bit Number
7
6
5
4
3
2
1
0
Bit Name
OUTPUT FORMAT
TTX WST
TTX EN
SYNC_DLY
XTAL
SC_EN
Default
0
0
0
0
0
0
0
0
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
4
TTX 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
3
TTX EN
Enable teletext process (1 = enable)
2
SYNC DLY
Slave mode 1 pixel sync delay (1 = enable)
1
XTAL
Crystal oscillator for subcarrier adjustment enable (1 = enable)
0
BU DIS
Chroma burst disable (1 = disable)