SC1200UFH-266BF 33 AMD (ADVANCED MICRO DEVICES), SC1200UFH-266BF 33 Datasheet - Page 222
SC1200UFH-266BF 33
Manufacturer Part Number
SC1200UFH-266BF 33
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.SC1200UFH-266BF_33.pdf
(443 pages)
Specifications of SC1200UFH-266BF 33
Lead Free Status / RoHS Status
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Index F7h
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 except for bit 7 which has a third level of status reporting at
F0BAR0+I/O 0Ch/1Ch.
A read-only “Mirror” version of this register exists at F0 Index 87h. If the value of the register must be read without clearing the SMI
source (and consequently de-asserting SMI), F0 Index 87h can be read instead.
Table 6-29. F0: PCI Header/Bridge Configuration Registers for GPIO and LPC Support (Continued)
Bit
5:4
3
2
1
0
7
6
3
Description
Keyboard/Mouse Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to the
keyboard or mouse.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[3] = 1.
Parallel/Serial Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to either the
serial or parallel ports.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[2] =1.
Floppy Disk Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to the floppy
disk.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[1] = 1.
Primary Hard Disk Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to the
primary hard disk.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[0] = 1.
GPIO Event SMI Status (Read Only, Read does not Clear). Indicates whether or not an SMI was caused by a transition of
any of the GPIOs (GPIO47-GPIO32 and GPIO15-GPIO0).
0: No.
1: Yes.
To enable SMI generation, set F1BAR1+I/O Offset 0Ch[0] = 0.
F0BAR0+I/O Offset 08h/18h selects which GPIOs are enabled to generate a PME and setting F1BAR1+I/O Offset 0Ch[0] =
0 enables the PME to generate an SMI. In addition, the selected GPIO must be enabled as an input (F0BAR0+I/O Offset
20h and 24h).
The next level (third level) of SMI status is at F0BAR0+I/O 0Ch/1Ch.
Thermal Override SMI Status. Indicates whether or not an SMI was caused by an assertion of the THRM#.
0: No.
1: Yes.
To enable SMI generation set F0 Index 83h[4] = 1.
Reserved. Read as 0.
SIO PWUREQ SMI Status. Indicates whether or not an SMI was caused by a power-up event from the SIO.
0: No.
1: Yes.
A power-up event is defined as any of the following events/activities:
To enable SMI generation, set F1BAR1+I/O Offset 0Ch[0] = 0.
—
—
—
RI2#
SDATA_IN2
IRRX1 (CEIR)
32579B
Second Level PME/SMI Status Register 4 (RC)
Core Logic Module - Bridge, GPIO, and LPC Registers - Function 0
AMD Geode™ SC1200/SC1201 Processor Data Book
Reset Value: 00h
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