CS4954 datasheet(40/56 Pages) CIRRUS

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CS4954 CS4955

DS278PP4

Background Color Register

Address

×08

BKG_COLOR

Read/Write

Default Value = 03h

GPIO Control Register

Address

×09

GPIO__REG

Read/Write

Default Value = 00h

GPIO Data Register

Address

×0A

GPIO_REG

Read/Write

Default Value = 00h

Sync Register 0

Address

×0D

Sync_0

Read/Write

Default Value = 90h

Bit Number

543

210

Bit Name

Default

000

011

Bit

Mnemonic

Function

7:0

Background color (7:5 = R, 4:2 = G, 1:0 = B) (default is 0000 0011 - blue)

Bit Number

543

210

Bit Name

GPR_CNTRL

Default

000

Bit

Mnemonic

Function

7:0

GPR CNTRL

Input(0)/output(1) control of GPIO registers (bit 0: PDAT(0), bit 7: PDAT(7))

Bit Number

432

Bit Name

GPIO REG

Default

000

Bit

Mnemonic

Function

7:0

GPIO REG

GPIO data register ( data is output on PDAT bus if appropriate bit in address 09 is

set to “1”, otherwise data is input/output through I2C)- This register is only accessible

in I2C mode.

Bit Number

765432

Bit Name

PROG VS[4:0]

PROG HS[10:8]

Default

100100

Bit

Mnemonic

Function

7:3

PROG VS[4:0]

programmable vsync lines

2:0

PROG HS[10:8]

programmable hsync pixels (3 most significant bits)

CS4954 Datasheet(PDF) 40 Page - Cirrus Logic

CS4954 Datasheet(HTML) 40 Page - Cirrus Logic

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