Cirrus-logic CS4955 Instrukcja Użytkownika Pobierz pdf (Strona 49)

CS4954 CS4955

DS278F6 49

Filter Register 5

Address 0×27 B_AMP Read/Write Default Value = 80h

Filter Register 6

Address 0×28 Bright_Offsett Read/Write Default Value = 00h

Teletext Register 0

Address 0×29 TTXHS Read/Write Default Value = A1h

Teletext Register 1

Address 0×2A TTXHD Read/Write Default Value = 02h

Bit Number

76543210

Bit Name

B_AMP

Default

10000000

Bit Mnemonic Function

7:0 B_AMP

Blue amplitude coefficient

Bit Number

76543210

Bit Name

BRIGHTNESS_OFFSET

Default

00000000

Bit Mnemonic Function

7:0 BRGHT_OFFSET

Brightness adjustment ( range: -128 to +127)

Bit Number

76543210

Bit Name

TTXHS

Default

10100001

Bit Mnemonic Function

7:0 TTXHS

Start of teletext request pulses or start of window

Bit Number

76543210

Bit Name

TTXHD

Default

00000010

Bit Mnemonic Function

7:0 TTXHD

If TTX_WINDOW = 0 then this register is used as the Pipeline delay between

TTXRQ and TTXDAT signals in the teletext source. User programmable delay step

of 37 ns per LSB.

If TTX_WINDOW = 1 then this register is used as the 8 LSBs of the teletext insertion

windows; the 3 MSBs are located in register 0×31. (register 0×31 bit 3)

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 59 60

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