AMD SC1201, SC1200 manual Index F6h Second Level PME/SMI Status Register 3 RC

Core Logic Module - Bridge, GPIO, and LPC Registers - Function 0 32579B

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

Bit Description

4User Defined Device Idle Timer 1 (UDEF1) SMI Status. Indicates whether or not an SMI was caused by expiration of User Defined Device 1 (UDEF1) Idle Timer Count Register (F0 Index A0h).

0:No.

1:Yes.

To enable SMI generation, set F0 Index 81h[4] = 1.

3Keyboard/Mouse Idle Timer SMI Status. 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] = 1.

2Parallel/Serial Idle Timer SMI Status. 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] = 1.

1Floppy Disk Idle Timer SMI Status. 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] = 1.

0Hard Disk Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Hard Disk Idle Timer Count Register (F0 Index 98h).

0:No.

1:Yes.

To enable SMI generation, set F0 Index 81h[0] = 1.

Index F6h Second Level PME/SMI Status Register 3 (RC) 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]. Reading this register clears the status at both the second and top levels.

A read-only “Mirror” version of this register exists at F0 Index 86h. If the value of the register must be read without clearing the SMI source (and consequently de-asserting SMI), F0 Index 86h can be read instead.

7Video 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] = 1.

6Reserved. Reads as 0.

5Secondary 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] = 1.

4Secondary 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] = 1.

AMD Geode™ SC1200/SC1201 Processor Data Book 221