American Audio UCD-200 - REV 8-10 Specifications download pdf (Page 59)

100

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SLAS495A− JUNE 2006 − REVISED OCTOBER 2007

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PAGE 2 CONTROL REGISTER MAP

BIT NAME

RESET

VALUE

READ/

WRITE

FUNCTION

D15−D14 ADCHPF 00 R/W ADC High Pass Filter

00 => Disabled

01 => −3db point = 0.0045xFs

10 => −3dB point = 0.0125xFs

11 => −3dB point = 0.025xFs

Note: Fs is ADC sample rate

D13−D12 0’s R Reserved

D11−D10 WLEN 00 R/W Codec Word Length

00 => Word length = 16−bit

01 => Word length = 20−bit

10 => Word length = 24−bit

11 => Word length = 32−bit

D9−D8 DATFM 00 R/W Digital Data Format

00 => I2S Mode

01 => DSP Mode

10 => Right Justified

11 => Left Justified

Note: Right justified valid only when the ratio between DAC and ADC sample rate is an integer. e.g.

ADC = 32 kHz and DAC = 24 kHz or vice−versa is invalid for right justified Mode.

D7−D6 0’s R Reserved

D5−D3 DACFS 000 R/W DAC Sampling Rate

000 => DAC FS = Fsref/1

001 => DAC FS = Fsref/(1.5)

010 => DAC FS = Fsref/2

011 => DAC FS = Fsref/3

100 => DAC FS = Fsref/4

101 => DAC FS = Fsref/5

110 => DAC FS = Fsref/(5.5)

111 => DAC FS = Fsref/6

Note: Fsref is set between 39 kHz and 53 kHz

D2−D0 ADCFS 000 R/W ADC Sampling Rate

000 => ADC FS = Fsref/1

001 => ADC FS = Fsref/(1.5)

010 => ADC FS = Fsref/2

011 => ADC FS = Fsref/3

100 => ADC FS = Fsref/4

101 => ADC FS = Fsref/5

110 => ADC FS = Fsref/(5.5)

111 => ADC FS = Fsref/6

Note: Fsref is set between 39 kHz and 53 kHz

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American Audio UCD-200 - REV 8-10 Specifications Page 59

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