Product specifications

VT1211 LPC SuperIO and Hardware Monitor
Revision 1.0 January 8, 2002 -15- Register Overview
Technologies, Inc.
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Figure 3. Register Map
Configuration Registers (Read / Write values via Port 2Fh or 4F)
0 -reserved-
... ...
6 -reserved-
7 Logical Device Number
8 -reserved-
... ...
1F -reserved-
20 Device ID
21 Device Revision
22 Power Down Control
23 LPC Wait State Select
24 GPIO Port 1 Pin Select
25 GPIO Port 2 Pin Select
26 GPIO Port 7 Pin Select
27 Multifunction Pin Select - Serial Port 2
28 Multifunction Pin Select - MIDI Port
29 Multifunction Pin Select - Hardware Mon
2A - reserved-
... ...
2D -reserved-
2E Test Mode A (Do Not Program)
2F Test Mode B (Do Not Program)
30 -reserved-
... ...
FF -reserved-
I/O Port 2Eh or 4Eh Index
LDN 00h - Floppy Disk
30
60
61
70
74
F0
F1
LDN 01h - Parallel Port
30
60
61
70
74
F0
LDN 02h - Serial Port 1
30
60
61
70
F0
LDN 03h - Serial Port 2
30
60
61
70
F0
LDN 06h - MIDI
30
60
61
70
LDN 07h - Game Port
30
60
61
LDN 08h - GPIO
30
60
61
70
F0
F1
F2
LDN 09h - Watchdog Timer
30
60
61
70
F0
LDN 0Ah - Wakeup Control
30
60
61
70
LDN 0Bh - Hardware Monitor
30
60
61
70
LDN0Ch-FastIR
30
60
61
70
74
F0
LDN 0Dh - ROM Control
30 ROM Interface Activate
F0 ROM Decoding Control
Floppy Disk I/O Regs
Offset 2 - Command
Offset 4 - Status / Rate Select
Offset 5 - Data
Offset 7 - Disk Change Status
FDC I/O Base
Serial Port 2
I/O Base
Parallel Port I/O Regs
Offset 0 - Data
Offset 1 - Status
Offset 2 - Control
Offset 3 - ...
Serial Port 1 I/O Regs
Offset 0 - Tx / Rx Buffer
Offset 1 - Interrupt Enable
Offset 2 - Interrupt Status
Offset 3 - Control
Offset 4 - ...
Serial Port 1
I/O Base
Parallel Port
I/O Base
......