CS4954 datasheet(39/56 Pages) CIRRUS

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CS4954 CS4955

DS278PP4

Control Register 5

Address

×05

CONTROL_5

Read/Write

Default Value = 00h

Control Register 6

Address

×06

CONTROL_6

Read/Write

Default Value = 00h

Bit Number

5432

Bit Name

RSVD

LOW IMP

EN COM

EN LEN CEN REN GEN B

Default

0000

Bit

Mnemonic

Function

reserved

6LOW IMP

selects between high output impedance (0) or low output impedance (1) mode of DACs

5EN COM

enable DAC for composite output 0: tri-state, 1: enable

4EN L

enable s-video DAC for luma output 0: tri-state, 1: enable

3EN C

enable s-video DAC for chroma output 0: tri-state, 1: enable

2EN_R

enable rgb video DAC for red output 0: tri-state, 1: enable

1EN_G

enable rgb video DAC for green output 0: tri-state, 1: enable

0EN_B

enable rgb video DAC for blue output 0: tri-state, 1: enable

Bit Number

Bit Name

656 SYNC

OUT

CLIP OFF

TTXEN

COM2

TTXEN

COM1

TTXEN

SVID

BSYNC DIS GSYNC DIS RSYNC DIS

Default

Bit

Mnemonic

Function

656 SYNC OUT

Enable (=1) output of hsync and vsync in the ITU R.BT656 mode

6CLIP OFF

Clipping input signals disable (0: clipping active 1: no clipping)

TTXEN COM2

Enable teletext at the composit2 output (0: disable teletext, 1 : enable teletext)

TTXEN COM1

Enable teletext at the composit1 output ( 0: disable teletext, 1 : enable teletext)

TTXEN SVID

Enable teletext at the s-video output ( 0: disable teletext, 1: enable teletext)

BSYNC DIS

Disable syncs in the blue or v output (0: enable syncs, 1: disable syncs)

GSYNC DIS

Disable syncs in the green or u output ( 0: enable syncs, 1: disable syncs)

RSYNC DIS

Disable syncs in the red or y output (0: enable syncs, 1: disable syncs)

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