AD1937WBSTZ datasheet(30/36 Pages) AD

30 / 36 page

AD1937

Rev. 0 | Page 30 of 36

Table 28. DACxx Volume Controls Registers (Address 6 to Address 13, 0x06 to 0x0D)

Bit

Value

Function

Description

7:0

No attenuation

DAC volume control

1 to 254

−0.375 dB per step

255

Full attenuation

ADC CONTROL REGISTERS

Table 29. ADC Control 0 Register (Address 14, 0x0E)

Bit

Value

Function

Description

Normal

Power-down

Power down

Off

High-pass filter

Unmute

ADC1L mute

Mute

Unmute

ADC1R mute

Mute

Unmute

ADC2L mute

Mute

Unmute

ADC2R mute

Mute

7:6

32 kHz/44.1 kHz/48 kHz

Output sample rate

64 kHz/88.2 kHz/96 kHz

128 kHz/176.4 kHz/192 kHz

Reserved

Table 30. ADC Control 1 Register (Address 15, 0x0F)

Bit

Value

Function

Description

1:0

24 bits

Word width

20 bits

Reserved

16 bits

4:2

000

1 cycle (I2S mode)

ASDATA delay (BCLK periods)

001

0 (left-justified mode)

010

8 cycles (right-justified 24-bit mode)

011

12 cycles (right-justified 20-bit mode)

100

16 cycles (right-justified 16-bit mode)

101

Reserved

110

Reserved

111

Reserved

6:5

Stereo

Serial format

TDM single-line, standalone, and daisy-chain modes

TDM/AUX mode (ADC-, DAC-, TDM-coupled)

Reserved

Latch in midcycle (normal)

ABCLK active edge (TDM_IN)

Latch in at end of cycle (pipeline)

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