ALC658

Datasheet

Six-Channel AC’97 2.3 Audio Codec

Rev. 1.3

iii

Table of Contents

1.

GENERAL DESCRIPTION................................................................................................................................................1

2.

FEATURE .............................................................................................................................................................................2

3.

BLOCK DIAGRAM.............................................................................................................................................................3

3.1.

ANALOG MIXER........................................................................................................................................3

3.2.

DIGITAL DATA PATH ..................................................................................................................................4

4.

PIN ASSIGNMENTS ...........................................................................................................................................................5

4.1.

LEAD (PB)-FREE PACKAGE AND VERSION IDENTIFICATION.......................................................................5

5.

PIN DESCRIPTION ............................................................................................................................................................6

5.1.

DIGITAL I/O PINS ......................................................................................................................................6

5.2.

ANALOG I/O PINS .....................................................................................................................................6

5.3.

FILTER/REFERENCE PINS...........................................................................................................................7

5.4.

POWER/GROUND PINS...............................................................................................................................7

6.

REGISTER DESCRIPTIONS ............................................................................................................................................8

6.1.

MIXER REGISTERS ....................................................................................................................................8

6.1.1.

MX00 Reset ..............................................................................................................................................9

6.1.2.

MX02 (Front) Master Volume ..................................................................................................................9

6.1.3.

MX0A PC BEEP Volume ........................................................................................................................10

6.1.4.

MX0C PHONE Volume ..........................................................................................................................10

6.1.5.

MX0E MIC Volume................................................................................................................................. 11

6.1.6.

MX10 LINE_IN Volume.......................................................................................................................... 11

6.1.7.

MX12 CD Volume................................................................................................................................... 11

6.1.8.

MX16 AUX Volume.................................................................................................................................12

6.1.9.

MX18 PCM_OUT Volume ......................................................................................................................12

6.1.10.

MX1A Record Select...............................................................................................................................13

6.1.11.

MX1C Record Gain for 1st Stereo ADC..................................................................................................13

6.1.12.

MX1E Record Gain for 2nd Stereo ADC .................................................................................................14

6.1.13.

MX20 General Purpose Register ...........................................................................................................14

6.1.14.

MX24 Audio Interrupt and Paging.........................................................................................................15

6.1.15.

MX26 Power Down Control/Status ........................................................................................................16

6.1.16.

MX28 Extended Audio ID ......................................................................................................................17

6.1.17.

MX2AExtendedAudioStatusandControlRegister.................................................................................................18

6.1.18.

MX2C PCM Front/Center Output Sample Rate ...........................................................................................19

6.1.19.

MX2E PCM Surround Output Sample Rate ..............................................................................................19

6.1.20.

MX30 PCM LFE Output Sample Rate ...................................................................................................19

6.1.21.

MX32 PCM Input (1st ADC) Sample Rate ..............................................................................................20

6.1.22.

MX34 PCM Input (2nd ADC) Sample Rate .............................................................................................20

6.1.23.

MX36 LFE/Center Master Volume .........................................................................................................21

6.1.24.

MX38 Surround Master Volume .............................................................................................................21

6.1.25.

MX3AS/PDIFOutputChannelStatusandControl............................................................................................22

6.2.

VENDOR DEFINED REGISTERS (PAGE ID-00H) ........................................................................................23

6.2.1.

MX60 S/PDIF Input Channel Status [15:0] ...........................................................................................23

6.2.2.

MX62 S/PDIF Input Channel Status [29:15] .........................................................................................24

6.2.3.

MX64 Surround DAC Volume ................................................................................................................24

6.2.4.

MX66 Center/LFE DAC Volume ............................................................................................................25

6.2.5.

MX6A Data Flow Control ......................................................................................................................25

6.3.

DISCOVERY DESCRIPTOR (PAGE ID-01H) ................................................................................................26

6.3.1.

MX62 PCI Sub System ID ......................................................................................................................26

6.3.2.

MX64 PCI Sub Vendor ID ......................................................................................................................26

6.3.3.

MX66 Sense Function Select ..................................................................................................................27