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Table 3-6, Three-signal/group multiplexing – AMD Geode SC2200 User Manual

Page 46

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48

AMD Geode™ SC2200 Processor Data Book

Signal Definitions

32580B

Table 3-6. Three-Signal/Group Multiplexing

Ball No.

Default

Alternate1

Alternate2

Signal

Configuration

Signal

Configuration

Signal

Configuration

Sub-ISA

Sub-ISA

1

GPIO

D9

IOR#

PMR[21] = 0 and
PMR[2] = 0

DOCR#

PMR[21] = 0 and
PMR[2] = 1

GPIO14

PMR[21] = 1 and
PMR[2] = 1

A8

IOW#

DOCW#

GPIO15

GPIO

AC97

FPCI Monitoring

V31

GPIO16

PMR[0] = 0 and
FPCI_MON = 0

PC_BEEP

PMR[0] = 1 = 0 and
FPCI_MON = 0

F_DEVSEL

FPCI_MON = 1

GPIO

PCI

2

Sub-ISA

C9

GPIO19

PMR[9] = 0 and
PMR[4] = 0

INTC#

PMR[9] = 0 and
PMR[4] = 1

IOCHRDY

PMR[9] = 1 and
PMR[4] = 1

Parallel Port

TFT

3

FPCI Monitoring

B18

ACK#

PMR[23] = 0 and
(PMR[27] = 0 and
FPCI_MON = 0)

TFTDE

PMR[23] = 1 and
(PMR[27] = 0 and
FPCI_MON = 0)

FPCI_CLK

PMR[23] = 0 and
(PMR[27] = 1 or
FPCI_MON = 1)

D22

AFD#/DSTRB#

TFTD2

INTR_O

B17

BUSY/WAIT#

TFTD3

F_C/BE1#

D21

ERR#

TFTD4

F_C/BE0#

B21

INIT#

TFTD5

SMI_O

C21

PD0

TFTD6

F_AD0

A21

PD1

TFTD7

F_AD1

D20

PD2

TFTD8

F_AD2

C20

PD3

TFTD9

F_AD3

C18

PD4

TFTD10

F_AD4

C19

PD5

TFTD11

F_AD5

A20

PD6

TFTD1

F_AD6

A18

PD7

TFTD13

F_AD7

D17

PE

TFTD14

F_C/BE2#

C17

SLCT

TFTD15

F_C/BE3#

B20

SLIN#

/ASTRB#

TFTD16

F_IRDY

A22

STB#/WRITE#

TFTD17

F_FRAME#

GPIO

Sub-ISA

TFT

3

A10

GPIO17

PMR[23] = 0 and
PMR[5] = 0

IOCS0#

PMR[23] = 0 and
PMR[5] = 1

TFTDCK

PMR[23] = 1

A9

GPIO20

PMR[23] = 0 and
PMR[7] = 0

DOCCS#

PMR[23] = 0 and
PMR[7] = 1

TFTD0

PMR[23] = 1

D10

GPIO1

PMR[23] = 0 and
PMR[13] = 0

IOCS1#

PMR[23] = 0 and
PMR[13] = 1

TFTD12

PMR[23] = 1

AB1

GPIO

Sub-ISA

N31

AB1C

PMR[23] = 0

GPIO20

PMR[23] = 1 and
PMR[7] = 0

DOCCS#

PMR[23] = 1 and
PMR[7] = 1

N30

AB1D

PMR[23] = 0

GPIO1

PMR[23] = 1 and
PMR[13] = 0

IOCS1#

PMR[23] = 1 and
PMR[13] = 1

GPIO

UART2

IDE2

AJ8

GPIO11

PMR[18] = 0 and
PMR[8] = 0

RI2#

PMR[18] = 1 and
PMR[8] = 0

IRQ15

PMR[18] = 0 and
PMR[8] = 1