SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 247
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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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Revision 3.0
Core Logic Module
Offset 04h-05h
The bits in this register contain second level status reporting. Top level status is reported at F1BAR0+I/O Offset 00h/02h[9].
Reading this register does not clear the SMI. For more information, see F1BAR0+I/O Offset 06h.
Offset 06h-07h
The bits in this register contain second level of status reporting. Top level status is reported in F1BAR0+I/O Offset 00h/02h[9]. Reading
this register clears the status at both the second and top levels.
A read-only “Mirror” version of this register exists at F1BAR0+I/O Offset 04h. If the value of this register must be read without clearing
the SMI source (and consequently deasserting SMI), F1BAR0+I/O Offset 04h can be read instead.
15:6
15:6
Bit
5
4
3
2
1
0
Description
Reserved.
PCI/ISA Function Trap. Indicates whether or not an SMI was caused by a trapped PCI/ISA configuration cycle.
0: No.
1: Yes.
To enable SMI generation for:
SMI Source is Trapped Access to User Defined Device 3. Indicates whether or not an SMI was caused by a trapped I/O
or memory access to the User Defined Device 3 (F0 Index C8h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[6] = 1.
SMI Source is Trapped Access to User Defined Device 2. Indicates whether or not an SMI was caused by a trapped I/O
or memory access to the User Defined Device 2 (F0 Index C4h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[5] = 1.
SMI Source is Trapped Access to User Defined Device 1. Indicates whether or not an SMI was caused by a trapped I/O
or memory access to the User Defined Device 1 (F0 Index C0h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[4] = 1.
SMI Source is Expired General Purpose Timer 2. Indicates whether or not an SMI was caused by the expiration of Gen-
eral Purpose Timer 2 (F0 Index 8Ah).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 83h[1] = 1.
SMI Source is Expired General Purpose Timer 1. Indicates whether or not an SMI was caused by the expiration of Gen-
eral Purpose Timer 1 (F0 Index 88h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 83h[0] = 1.
Reserved.
— Trapped access to ISA Legacy I/O register space set F0 Index 41h[0] = 1.
— Trapped access to F1 register space set F0 Index 41h[1] = 1.
— Trapped access to F2 register space set F0 Index 41h[2] = 1.
— Trapped access to F3 register space set F0 Index 41h[3] = 1.
— Trapped access to F4 register space set F0 Index 41h[4] = 1.
— Trapped access to F5 register space set F0 Index 41h[5] = 1.
Table 5-33. F1BAR0+I/O Offset: SMI Status Registers (Continued)
(Continued)
Second Level General Traps & Timers Status Register (RC)
Second Level General Traps & Timers
PME/SMI Status Mirror Register (RO)
247
Reset Value: 0000h
Reset Value: 0000h
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