AD1986ABSTZ datasheet(34/56 Pages) AD

34 / 56 page

AD1986A

Rev. 0 | Page 34 of 56

SURROUND DAC PCM RATE (REGISTER 0x2E)

This read/write sample rate control register contains a 16-bit unsigned value, representing the rate of operation in Hz. If the VRA bit

(0x2A D00) is 0, this register is forced to 48 kHz (0xBB80). If VRA is 1, this register can be programmed with the actual sample rate.

If the DRA bit (0x2A D01) is set, the surround DAC is inoperative and automatically powered down.

Reg

Name

D15

D14

D13

D12

D11

D10

Default

0x2E

SURR_1 DAC PCM

Rate

R15

R14

R13

R12

R11

R10

0xBB80

Table 93.

Function

R [15:0]

(Sample

Rate)

The sampling frequency range is from 7 kHz (0x01B58) to 48 kHz (0xBB80) in 1 Hz increments. If zero is written to VRA then the

sample rates are reset to 48 kHz.

C/LFE DAC PCM RATE (REGISTER 0x30)

This read/write sample rate control register contains a 16-bit unsigned value, representing the rate of operation in Hz. If the VRA bit

(0x2A D00) is 0 this register is forced to 48 kHz (0xBB80). If VRA is 1, this register can be programmed with the actual sample rate.

If the DRA bit (0x2A D01) is set, the C/LFE DAC is inoperative and automatically powered down.

Reg

Name

D15

D14

D13

D12

D11

D10

Default

0x30

C/LFE DAC

PCM Rate

R15

R14

R13

R12

R11

R10

0xBB80

Table 94.

Function

R [15:0]

(Sample

Rate)

The sampling frequency range is from 7 kHz (0x01B58) to 48 kHz (0xBB80) in 1 Hz increments. If 0 is written to VRA then the

sample rates are reset to 48 kHz.

ADC PCM RATE (REGISTER 0x32)

This read/write sample rate control register contains 16-bit unsigned value, representing the rate of operation in Hz. If the VRA bit (0x2A

D00) is 0 (zero) this register is forced to 48 kHz (0xBB80). If VRA is 1, this register can be programmed with the actual sample rate.

Reg

Name

D15

D14

D13

D12

D11

D10

Default

0x32

ADC 0 PCM

Rate

R15

R14

R13

R12

R11

R10

0xBB80

Table 95.

Function

R [15:0]

(Sample

Rate)

The sampling frequency range is from 7 kHz (0x01B58) to 48 kHz (0xBB80) in 1 Hz increments. If 0 is written to VRA then the

sample rates are reset to 48 kHz.

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