FDC37B787QF SMSC [SMSC Corporation], FDC37B787QF Datasheet - Page 163
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FDC37B787QF
Manufacturer Part Number
FDC37B787QF
Description
Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37B787QF.pdf
(249 pages)
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SMI Enable Register 2 (SMI_EN2)
Register Location: < PM1_BLK >+15h System I/O Space
Default Value: 00h on Vbat POR
Attribute: Read/Write
Size: 8-bits
SMI Enable
Register 2
Default = 0x00
on Vbat POR
NAME
This register is used to enable the different interrupt sources onto the group
nSMI output, and the group nSMI output onto the nSMI GPI/O pin.
Unless otherwise noted,
1=Enable
0=Disable
Bit[0] EN_MINT
Bit[1] EN_KINT
Bit[2] EN_IRINT
Bit[3] EN_BINT
Bit[4] EN_P12: Enable 8042 P1.2 to route internally to nSMI
Bit [5] EN_CIR
Note: the PME status bit for CIR is used as the SMI status bit for CIR (see
PME Status Register).
Bit[6] EN_SMI_PME: Enable the group nSMI output into the PME interface
logic.
Bit[7] EN_SMI: Enable the group nSMI output onto the nSMI pin or Serial
IRQ frame (IRQ2).
Note: the selection of either the nSMI pin or serial IRQ frame is done via bit
7 of the IRQ Mux Control Register (0xC0 in Logical Device 8).
0=Do not route to nSMI
1=Enable routing to nSMI.
0=SMI pin floats
1=Enable group nSMI output onto nSMI pin or serial IRQ frame
0= Group SMI output does not go to PME interface logic
1= Enable group SMI output to PME interface logic
165
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