SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 228
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SC2200
Manufacturer Part Number
SC2200
Description
Thin Client On a Chip
Manufacturer
NSC [National Semiconductor]
Datasheet
1.SC2200.pdf
(433 pages)
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Core Logic Module
Table 5-29. F0: PCI Header and Bridge Configuration Registers for GPIO and LPC Support (Continued)
Index F5h
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 85h. If the value of the register must be read without clearing the SMI
source (and consequently deasserting SMI), F0 Index 85h can be read instead.
Bit
7
6
5
4
3
2
1
0
Description
Video Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Video Idle Timer Count Regis-
ter, (F0 Index A6h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[7] = 1.
User Defined Device Idle Timer 3 (UDEF3) SMI Status. Indicates whether or not an SMI was caused by expiration of User
Defined Device 3 (UDEF3) Idle Timer Count Register (F0 Index A4h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[6] = 1.
User Defined Device Idle Timer 2 (UDEF2) SMI Status. Indicates whether or not an SMI was caused by expiration of User
Defined Device 2 (UDEF2) Idle Timer Count Register (F0 Index A2h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[5] = 1.
User 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.
Keyboard/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.
Parallel/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.
Floppy 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.
Hard 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.
(Continued)
Second Level PME/SMI Status Register 2 (RC)
228
Reset Value: 00h
Revision 3.0
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