Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -106- Device 17 Function 5 Audio Controller Registers
I/O Offset 42 Multichannel SGD Format.....................RW
7 PCM Format
Selects the PCM format used by the controller to
process the incoming sample.
0 8-bit .................................................... default
1 16-bit
6-4 Number of Channels Supported
000 -reserved-............................................... default
001 One Channel
010 Two Channels
011 Three Channels
100 Four Channels
101 Five Channels
110 Six Channels
111 -reserved-
3-0 Reserved ........................................ always reads 0
I/O Offset 43 Multichannel Scratch Register...............RW
7-0 No Hardware Function........................ default = 00h
I/O Offset 47-44 Multichannel SGD Table Ptr Base ...RW
31-0 SGD Table Pointer Base Address (even addr).... W
Current Pointer Address........................................R
I/O Offset 4B-48 Multichannel SGD Slot Select.......... RW
31-24 SGD Stop Index Setting ...................... default = FFh
23-20 Data Select of Slot 9
0 No data assigned to slot 9...................... default
1 1
st
data in sample assigned to slot 9
2 2
nd
data in sample assigned to slot 9
3 3
rd
data in sample assigned to slot 9
4 4
th
data in sample assigned to slot 9
5 5
th
data in sample assigned to slot 9
6 6
th
data in sample assigned to slot 9
7-F -reserved
19-16 Data Select of Slot 6
15-12 Data Select of Slot 8
11-8 Data Select of Slot 7
7-4 Data Select of Slot 4
3-0 Data Select of Slot 3
I/O Offset 4F-4C Multichannel 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.