Control register 5, Control register 6 – Cirrus Logic CS4955 User Manual
Page 42
CS4954 CS4955
42
DS278F6
Control Register 5
Address
0
×
05
CONTROL_5
Read/Write
Default Value = 00h
Control Register 6
Address
0
×
06
CONTROL_6
Read/Write
Default Value = 00h
Bit Number
7
6
5
4
3
2
1
0
Bit Name
RSVD
LOW IMP
EN COM
EN L
EN C
EN R
EN G
EN B
Default
0
0
0
0
0
0
0
0
Bit
Mnemonic
Function
7
-
reserved
6
LOW IMP
selects between tri-state output (0) or output enabled (1) mode of DACs
5
EN COM
enable composite (CVBS) DAC 0: high-impedance, 1: enable
4
EN L
enable S-VIDEO Y DAC for luma output 0: high-impedance, 1: enable
3
EN C
enable S-VIDEO C
DAC for chroma output 0: high-impedance, 1: enable
2
EN_R
enable RGB video R DAC for red output 0: high-impedance, 1: enable
1
EN_G
enable RGB video G DAC for green output 0: high-impedance, 1: enable
0
EN_B
enable RGB video B DAC for blue output 0: high-impedance, 1: enable
Bit Number
7
6
5
4
3
2
1
0
Bit Name
656 SYNC
OUT
CLIP OFF
TTXEN
COM2
TTXEN
COM1
TTXEN
SVID
BSYNC DIS GSYNC DIS RSYNC DIS
Default
0
0
0
0
0
0
0
0
Bit
Mnemonic
Function
7
656 SYNC OUT
Enable (=1) output of hsync and vsync when in ITU R.BT656 mode
6
CLIP OFF
Clipping input signals disable (0: clipping active 1: no clipping)
5
TTXEN COM2
Enable teletext at the composite 2 output (0: disable teletext, 1 : enable teletext)
4
TTXEN COM1
Enable teletext at the composite 1 output ( 0: disable teletext, 1 : enable teletext)
3
TTXEN SVID
Enable teletext at the s-video output ( 0: disable teletext, 1: enable teletext)
2
BSYNC DIS
Disable syncs in the blue or v output (0: enable syncs, 1: disable syncs)
1
GSYNC DIS
Disable syncs in the green or u output ( 0: enable syncs, 1: disable syncs)
0
RSYNC DIS
Disable syncs in the red or y output (0: enable syncs, 1: disable syncs)