AMD manual Bit Description, AMD Geode SC2200 Processor Data Book 215

Core Logic Module - Bridge, GPIO, and LPC Registers - Function 0 32580B

Table 6-29. F0: PCI Header/Bridge Configuration Registers for GPIO and LPC Support (Continued)

Bit	Description
Index 85h	Second Level PME/SMI Status Mirror Register 2 (RO)	Reset Value: 00h

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 F5h. Reading this register does not clear the status, while reading its counterpart at F0 Index F5h clears the status at both the second and top levels.

7Video Idle Timer Timeout. Indicates whether or not an SMI was caused by expiration of Video Idle Timer Count Register (F0 Index A6h).

0:No.

1:Yes.

To enable SMI generation, set F0 Index 81h[7] to 1.

6User Defined Device Idle Timer 3 Timeout. Indicates whether or not an SMI was caused by expiration of User Defined Device 3 Idle Timer Count Register (F0 Index A4h).

0:No

1:Yes

To enable SMI generation, set F0 Index 81h[6] to 1.

5User Defined Device Idle Timer 2 Timeout. Indicates whether or not an SMI was caused by expiration of User Defined Device 2 Idle Timer Count Register (F0 Index A2h).

0:No.

1:Yes.

To enable SMI generation, set F0 Index 81h[5] to 1.

4User 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.

3Keyboard/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.

2Parallel/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.

1Floppy 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.

0Primary 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.

AMD Geode™ SC2200 Processor Data Book 215