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VT8235 Datasheet(PDF) 39 Page - VIA Technologies, Inc. |
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VT8235 Datasheet(HTML) 39 Page - VIA Technologies, Inc. |
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39 / 145 page  VT8235 V-Link South Bridge Revision 1.22 October 24, 2002 -33- Register Overview UrpuytvrÃDp XrÃ8rp Function 5 I/O Base 0 Registers – AC97 Audio S/G DMA Offset AC97 SGD I/O Registers Default Acc x0 SGD Channel x Status 00 WC x1 SGD Channel x Control 00 RW x2 SGD Channel x Left Volume 3F RW x3 SGD Channel x Right Volume 3F RW x7-x4 SGD Channel x Table Pointer Base SGD Channel x Current Address 0000 0000 WR RD xB-x8 Stop Index / Data Type / Sample Rate FF0F FFFF RW xF-xC SGD Channel x Current Count 0000 0000 RO 40 SGD 3D Channel Status 00 WC 41 SGD 3D Channel Control 00 RW 42 SGD 3D Channel Format 00 RW 43 SGD 3D Channel Scratch 00 RW 47-44 SGD 3D Channel Table Pointer Base SGD 3D Channel Current Address 0000 0000 WR RD 4B-48 SGD 3D Channel Slot Select FF00 0000 RW 4F-4C SGD 3D Channel Current Count 0000 0000 RO 50-5F -reserved- 00 — 60 SGD Write Channel 0 Status 00 WC 61 SGD Write Channel 0 Control 00 RW 62 SGD Write Channel 0 Format 00 RW 63 SGD Write Channel 0 Select 00 RW 67-64 SGD Write Channel 0 Table Ptr Base SGD Write Channel 0 Current Addr 0000 0000 WR RD 6B-68 SGD Write Channel 0 Stop Index FF00 0000 RW 6F-6C SGD Write Channel 0 Current Count 0000 0000 RO 70 SGD Write Channel 1 Status 00 WC 71 SGD Write Channel 1 Control 00 RW 72 SGD Write Channel 1 Format 00 RW 73 SGD Write Channel 1 Select 00 RW 77-74 SGD Write Channel 1 Table Ptr Base SGD Write Channel 1 Current Addr 0000 0000 WR RD 7B-78 SGD Write Channel 1 Stop Index FF00 0000 RW 7F-7C SGD Write Channel 1 Current Count 0000 0000 RO Offset AC97 / Audio Codec I/O Registers Default Acc 83-80 AC97 Controller Command / Status 0000 0000 RW 87-84 SGD Global IRQ Shadow 0000 0000 RO 8B-88 Modem Codec GPI Intr Status / GPIO 0000 0000 RO 8F-8C Modem Codec GPI Interrupt Enable 0000 0000 RO 90-9F Shadow PCI Config Registers 40-4F n/a RO A0-FF -reserved- 00 — Function 6 I/O Base 0 Registers – MC97 Modem S/G DMA Offset MC97 SGD I/O Registers Default Acc 0-7 -reserved- 00 — 8-F -reserved- 00 — 10-17 -reserved- 00 — 18-1F -reserved- 00 — 20-27 -reserved- 00 — 28-2F -reserved- 00 — 30-37 -reserved- 00 — 38-3F -reserved- 00 — 40 SGD Read Channel Status 00 WC 41 SGD Read Channel Control 00 RW 42 SGD Read Channel Type 00 RW 43 -reserved- 00 — 47-44 SGD Read Chan Table Pointer Base SGD Read Channel Current Address 0000 0000 WR RD 4B-48 -reserved- (Test) 0000 0000 RO 4F-4C SGD Read Channel Current Count 0000 0000 RO 50 SGD Write Channel Status 00 WC 51 SGD Write Channel Control 00 RW 52 SGD Write Channel Type 00 RW 53 -reserved- 00 — 57-54 SGD Write Channel Table Ptr Base SGD Write Channel Current Address 0000 0000 WR RD 5B-58 Reserved (Test) 0000 0000 RO 5F-5C SGD Write Channel Current Count 0000 0000 RO 60-7F -reserved- 00 — Offset AC97 / Modem Codec I/O Registers Default Acc 83-80 AC97 Controller Command / Status 0000 0000 RW 87-84 SGD Global IRQ Shadow 0000 0000 RO 8B-88 Modem Codec GPI Intr Status / GPIO 0000 0000 WC 8F-8C Modem Codec GPI Interrupt Enable 0000 0000 RW 90-9F Shadow PCI Config Registers 40-4F n/a RO A0-FF -reserved- 00 — |
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