SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 216

• Manufacturer Part Number: SC2200
• Description: Thin Client On a Chip
• Manufacturer: NSC [National Semiconductor]

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Core Logic Module
Table 5-29. F0: PCI Header and Bridge Configuration Registers for GPIO and LPC Support (Continued)
Index 86h
The bits in this register contain second level status reporting. Top level status is reported in F1BAR0+I/O Offset 00h/02h[0].
This register is called a “Mirror” register since an identical register exists at F0 Index F6h. Reading this register does not clear the status,
while reading its counterpart at F0 Index F6h clears the status at both the second and top levels.
Bit
4
3
2
1
0
7
6
5
4
3
Description
User Defined Device Idle Timer 1 Timeout. Indicates whether or not an SMI was caused by expiration of User Defined
Device 1 Idle Timer Count Register (F0 Index A0h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[4] to 1.
Keyboard/Mouse Idle Timer Timeout. Indicates whether or not an SMI was caused by expiration of Keyboard/Mouse Idle
Timer Count Register (F0 Index 9Eh).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[3] to 1.
Parallel/Serial Idle Timer Timeout. Indicates whether or not an SMI was caused by expiration of Parallel/Serial Port Idle
Timer Count Register (F0 Index 9Ch).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[2] to 1.
Floppy Disk Idle Timer Timeout. Indicates whether or not an SMI was caused by expiration of Floppy Disk Idle Timer
Count Register (F0 Index 9Ah).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[1] to 1.
Primary Hard Disk Idle Timer Timeout. Indicates whether or not an SMI was caused by expiration of Primary Hard Disk
Idle Timer Count Register (F0 Index 98h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[0] to 1.
Video Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to the Video I/O Trap.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[7] to 1.
Reserved
Secondary Hard Disk Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to
the secondary hard disk.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 83h[6] to 1.
Secondary Hard Disk Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Secondary
Hard Disk Idle Timer Count register (F0 Index ACh).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 83h[7] to 1.
Keyboard/Mouse Access Trap SMI Status. Indicates whether or not an SMI was caused by an trapped I/O access to the
keyboard or mouse.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[3] to 1.
(Continued)
Second Level PME/SMI Status Mirror Register 3 (RO)
216
Reset Value: 00h
Revision 3.0