cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 302

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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DIVIL Register Descriptions
31:16
Bit
38
37
36
35
34
33
32
15
14
13
12
11
10
9
8
7
6
5
4
Name
PORTA_A20_
ASMI_FLAG
KEL_INIT_ASMI_
FLAG
PM_ASMI_FLAG
PIC_ASMI_FLAG
KEL_EE_ASMI_
FLAG
SHTDWN_ASMI_
FLAG
HLT_ASMI_FLAG
RSVD
PM1_CNT_SSMI_
EN
PM2_CNT_SSMI_
EN
KEL_A20_ASMI_
EN
DMA_SSMI_EN
LPC_SSMI_EN
RSVD
UART2_SSMI_EN
UART1_SSMI_EN
PORTA_INIT_
ASMI_EN
PORTA_A20_
ASMI_EN
KEL_INIT_ASMI_
EN
PM_ASMI_EN
DIVIL_GLD_MSR_SMI Bit Descriptions (Continued)
Description
Port A A20 ASMI Flag. If high, records that an ASMI was generated in the KEL due to
a A20 change on Port A (092h). Write 1 to clear; writing 0 has no effect.
PORTA_A20_ASMI_EN (bit 6) must be high to generate ASMI and set flag.
KEL INIT ASMI Flag. If high, records that an ASMI was generated in the KEL due to a
keyboard INIT sequence. Write 1 to clear; writing 0 has no effect. KEL_INIT_ASMI_EN
(bit 5) must be high to generate ASMI and set flag.
Power Management ASMI Flag. If high, records that an ASMI was generated in the
Power Management Logic. Write 1 to clear; writing 0 has no effect. PM_ASMI_EN (bit
4) must be high to generate ASMI and set flag.
PIC ASMI Flag. If high, records that an ASMI was generated in the Extended PIC Map-
per. Write 1 to clear; writing 0 has no effect. PIC_ASMI_EN (bit 3) must be high to gen-
erate ASMI and set flag.
KEL Emulation Event ASMI Flag. If high, records that an ASMI was generated in the
KEL due to a KEL emulation event. Write 1 to clear; writing 0 has no effect.
KEL_EE_ASMI_EN (bit 2) must be high to generate ASMI and set flag.
Shutdown ASMI Flag. If high, records that an ASMI was generated on a Shutdown
special cycle. Write 1 to clear; writing 0 has no effect. SHTDWN_ASMI_EN (bit 1) must
be high to generate ASMI and set flag.
Halt ASMI Flag. If high, records that an ASMI was generated on a Halt special cycle.
Write 1 to clear; writing 0 has no effect. HLT_ASMI_EN (bit 0) must be high to generate
an ASMI and set flag.
Reserved. Reads return 0. Writes have no effect.
Power Management 1 Control Register SSMI Enable. Write 1 to enable
PM1_CNT_SSMI_FLAG (bit 47) and to allow writes to PM1_CNT (ACPI I/O Offset 08h)
to generate an SSMI.
Power Management 2 Control Register SSMI Enable. Write 1 to enable
PM2_CNT_SSMI_FLAG (bit 46) and to allow writes to PM2_CNT (ACPI I/O Offset
0Ch) to generate an SSMI.
KEL Gate A20 ASMI Enable. Write 1 to enable KEL_A20_ASMI_FLAG (bit 45) and to
allow a keyboard gate A20 signal change in the KEL to generate an ASMI.
DMA SSMI Enable. Write 1 to enable DMA_SSMI_FLAG (bit 44) and to allow 8237s
during DMA to generate an SSMI.
LPC SSMI Enable. Write 1 to enable LPC_SSMI_FLAG (bit 43) and to allow the LPC
to generate an SSMI.
Reserved. Reads return 0. Writes have no effect.
UART2 SSMI Enable. Write 1 to enable UART2_SSMI_FLAG (bit 41) and to allow
UART2 to generate an SSMI.
UART1 SSMI Enable. Write 1 to enable UART1_SSMI_FLAG (bit 40) and to allow
UART1 to generate an SSMI.
Port A INIT ASMI Enable. Write 1 to enable PORTA_INIT_ASMI_FLAG (bit 39) and to
allow an INIT on Port A in the KEL to generate an ASMI.
Port A A20 ASMI Enable. Write 1 to enable PORTA_A20_ASMI_FLAG (bit 38) and to
allow an A20 change on Port A in the KEL to generate an ASMI.
KEL INIT ASMI Enable. Write 1 to enable KEL_INIT_ASMI_FLAG (bit 37) and to allow
a keyboard INIT sequence in the KEL to generate an ASMI.
Power Management ASMI Enable. Write 1 to enable PM_ASMI_FLAG (bit 36) and to
allow the Power Management Logic to generate an ASMI.
(Continued)
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Revision 0.8