Cirrus-logic CS4955 Instrukcja Użytkownika Pobierz pdf (Strona 51)

CS4954 CS4955

DS278F6 51

Teletext Register 6

Address 0×2F TTX_DIS1 Read/Write Default Value = 00h

Teletext Register 7

Address 0×30 TTX_DIS2 Read/Write Default Value = 00h

Teletext Register 8

Address 0×31 TTX_DIS3 Read/Write Default Value = 00h

Bit Number

76543210

Bit Name

TTX_LINE_DIS1

Default

00000000

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

76543210

Bit Name

TTX_LINE_DIS2

Default

00000000

Bit Mnemonic Function

7:0 TTX_LINE_DIS2

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

eight lines are disabled,

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

Bit Number

765 4 3 210

Bit Name

TTXHD RESERVED TTX_WINDOW TTX_LINE_DIS3

Default

000 0 0 000

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

4 Reserved

3TTX_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)

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 59 60

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