AD1985JSTZ 데이터 시트보기 (PDF) - Analog Devices

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AD1985JSTZ

AC ’97 SoundMAX® Codec

Analog Devices 

AD1985

Reset (Index 0x00)

Reg Num Name D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default

0x00

Reset X SE4 SE3 SE2 SE1 SE0 ID9 ID8 ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0 0x0090

Note: Writing any value to this register performs a register reset, which causes all registers (except Register 0x74) to revert to their default values. Register 0x74 will only

reset Bits CSWP (D3), LBKS[1:0] (D[6:5]), and OMS (D9). The REGM and serial configuration bits are reset only by an external hardware reset.

Reading this register returns the ID code of the part and a code for the type of 3D stereo enhancement.

ID[9:0] Identify Capability: The ID decodes the capabilities of AD1985 based on the following:

Bit = 1

ID0

ID1

ID2

ID3

ID4

ID5

ID6

ID7

ID8

ID9

Function

Dedicated MIC PCM In Channel

Reserved (per AC ’97, 2.3)

Bass and Treble Control

Simulated Stereo (Mono to Stereo)

Headphone Out Support

Loudness (Bass Boost) Support

18-Bit DAC Resolution

20-Bit DAC Resolution

18-Bit ADC Resolution

20-Bit ADC Resolution

AD1985

0

0

0

0

1

0

0

1

0

0

SE[4:0] Stereo Enhancement. The AD1985 does not provide hardware 3D stereo enhancement (all bits are 0).

Rev. A | Page 14 of 48

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