CS4954 datasheet(36/56 Pages) CIRRUS

36 / 56 page

CS4954 CS4955

DS278PP4

Control Register 0

Address

×00

CONTROL_0

Read/Write

Default Value = 01h

Control Register 1

Address

×01

CONTROL_1

Read/Write

Default Value = 02h

Bit Number

6543

210

Bit Name

TV_FMT

MSTR

CCIR656

PROG

IN_MODE

CBCR_UV

Default

0000

001

Bit

Mnemonic

Function

7:5

TV_FMT

selects the TV display format

000:

NTSC-M CCIR601 timing (default)

001:

NTSC-M RS170A timing

010:

PAL-B, D, G, H, I

011:

PAL-M

100:

PAL-N (Argentina)

101:

PAL-N (non Argentina)

110-111:

reserved

4MSTR

1 = Master Mode, 0 = Slave Mode

CCIR656

video input is in ITU R.BT656 format (0 = off, 1 = on)

2PROG

Progressive scanning enable (enable = 1)

IN_MODE

Input select (0 = solid background, 1 = use V [7:0] data)

CBCR_UV

enable YCbCr to YUV conversion (1 = enable, 0 = disable)

Bit Number

54321

Bit Name

LUM DEL

CH BW

LPF_ON

RGB_BW

FLD

PED

CBCRSEL

Default

00001

Bit

Mnemonic

Function

7:6

LUM DEL

luma delay on the composite1 output

00:

no delay (default)

01:

1 pixel clock delay

10:

2 pixel clock delay

11:

3 pixel clock delay

CH BW

chroma lpf bandwidth (0 = 650 kHz, 1 = 1.3 Mhz)

4LPF ON

chroma lpf on/off (0 = off, 1 = on)

3RGB_BW

0 = Full bandwidth on RGB, 1 = BW reduced to 2.5 MHz (3 dB point) (default 0)

2FLD_POL

Polarity of Field (0: odd field = 0,1: odd field = 1)

PED

Pedestal offset (0: 0 IRE, 1: 7.5 IRE)

CBCRSEL

CbCr select (0 = chroma undelayed, 1 = chroma delayed by one clock)

CS4954 Datasheet(PDF) 36 Page - Cirrus Logic

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