VT8235 datasheet(114/145 Pages) VIA

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VT8235 V-Link South Bridge

Revision 1.22 October 24, 2002

-108-

Device 17 Function 5 Audio Controller Registers

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I/O Offset 62 – Write Channel 0 SGD Format ...............RW

Reserved (Do Not Program)

...............always write 0

Recording FIFO

Disable .................................................. default

Enable

5-0

Reserved

........................................ always reads 0

I/O Offset 63 – Write Channel 0 Input Select .................RW

7-3

Reserved

........................................ always reads 0

Input Source Select

Line In (Slot 3, 4) .................................. default

Mic In (Slot 6)

1-0

Recording Source Select

00 Primary Codex ...................................... default

01 Secondary Codec 01

10 Secondary Codec 10

11 Secondary Codec 11

I/O Offset 67-64 – Wr Channel 0 SGD Table Ptr Base ..RW

31-0 SGD Table Pointer Base Address (even addr).... W

Current Pointer Address ........................................R

I/O Offset 6B-68 – Write Channel 0 SGD Stop Index ... RW

31-24 SGD Stop Index Setting

...................... default = FFh

23-22 Reserved

........................................always reads 0

21-20 PCM Format

Selects the PCM format used by the controller to

process the incoming sample.

00 8-bit Mono ............................................. default

01 8-bit Stereo

10 16-bit Mono

11 16-bit Stereo

19-16 Reserved

........................................................ RW

15-0 Reserved

........................................always reads 0

I/O Offset 6F-6C – Wr Channel 0 SGD Current Count. RO

31-24 Current SGD Index

This field reports the index the SGD engine is

currently processing.

23-0 Current SGD Count

This field reports the count remaining in the current

entry being processed. For example, if 10 bytes of a

30-byte count have been transferred, this field would

read 20 to indicate 20 bytes remaining.

VT8235 Datasheet(PDF) 114 Page - VIA Technologies, Inc.

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