82374EB datasheet(47/208 Pages) INTEL

47 / 208 page

82374EB82374SB

3117 PACPCIAPIC CONTROL REGISTER

Address Offset

70h

Default Value

00h

Attribute

ReadWrite

Size

8 Bits

The PAC Register controls the operation of the INTR signal in APICPIC configuration and the routing of the

System Management Interrupt (SMI)

Bit

Description

Reserved

SMI Routing Control (SMIRC)

When SMIRCe1 the SMI is routed via the APIC When SMIRCe0

the SMI is routed via the SMI

signal Note that when SMRCe1 INTR can not be routed through the

APIC since it is sharing the APIC interrupt input with SMI

INTR Routing Control (INTRC)

When APIC is enabled (in mixed or pure APIC mode) this bit allows

the ESC’s external INTR signal to be masked (forces INTR to the inactive state but does not tri-states

the signal) Thus the CPU’s INTR pin can be used (by providing a simple -gate) for the APIC Local

Interrupt (LINTRx) However INTR must not be masked via this bit when APIC is disabled and INTR is

the only mechanism to signal the 8259 recognized interrupts to the CPU When INTRCe1 INTR is

disabled (APIC must be enabled) When INTRCe0 INTR is enabled

3118 TESTCTEST CONTROL REGISTER

Address Offset

88h

Default Value

00h

Attribute

ReadWrite

Size

8 Bits

This register provides control for ESC manufacturing test modes The functionality of this register is reserved

3119 SMICNTLSMI CONTROL REGISTER

Address Offset

A0h

Default Value

08h

Attribute

ReadWrite

Size

8 Bits

For the 82374SB the SMICNTL Register provides Fast Off Timer control STPCLK

enabledisable and CPU

clock scaling This register also enablesdisables the system management interrupt (SMI)

Bit

Description

Reserved Must be 0 when writing this register

Reserved

Fast Off Timer Freeze (CTMRFRZ)

This field enablesdisables the Fast Off Timer When this bit is 1

the Fast Off timer stops counting This prevents time-outs from occurring while executing SMM code

When this bit is 0 the Fast Off timer counts

82374EB Folha de dados(PDF) 47 Page - Intel Corporation

82374EB Folha de dados(HTML) 47 Page - Intel Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Folha de dados Download

Ligação URL