CS4954 datasheet(48/56 Pages) CIRRUS

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CS4954 CS4955

DS278PP4

Teletext Register 6

Address

×2F

TTX_DIS1

Read/Write

Default Value = 00h

Teletext Register 7

Address

×30

TTX_DIS2

Read/Write

Default Value = 00h

Teletext Register 8

Address

×31

TTX_DIS3

Read/Write

Default Value = 00h

Bit Number

765

432

Bit Name

TTX_LINE_DIS1

Default

000

Bit

Mnemonic

Function

7:0

TTX_LINE_DIS1

Teletext disable bits corresponding to the lines 5-12 respectively, (11111111=all

eight lines are disabled),

(MSB is for line 5, LSB is for line 12)

Bit Number

765

432

Bit Name

TTX_LINE_DIS2

Default

000

Bit

Mnemonic

Function

7:0

TTX_LINE_DIS2

Teletext disable bits corresponding to the lines 13-20 respectively, (11111111=all

eight lines are disablled,

(MSB is for line 13, LSB is for line 20)

Bit Number

Bit Name

TTXHD

RESERVED TTX_WINDOW

TTX_LINE_DIS3

Default

Bit

Mnemonic

Function

7:5

TTXHD

If TTX_WINDOW = 0 these 3 bits are unused.

If TTX_WINDOW = 1 these 3 bits are the MSBs of the register 0×2A; they are used

to specify the length of the teletext insertion window

Reserved

TTX_WINDOW

Selects between TTXRQ (= 0) pulsation or TTXRQ (= 1) Window mode

2:0

TTX_LINE_DIS3

Teletext disable bits corresponding to the lines 13-20 respectively, (111=all three

lines are disabled),

(MSB is for line 21, LSB is for line 23)

CS4954 Datasheet(PDF) 48 Page - Cirrus Logic

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