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Table 3-6, Three-signal/group multiplexing – AMD Geode SC1201 User Manual

Page 47

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AMD Geode™ SC1200/SC1201 Processor Data Book

47

Signal Definitions

32579B

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

GPIO

Sub-ISA

TFT

3

A10

GPIO17

(PMR[23] = 0 and
PMR[5] = 0) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[5] = 0)

IOCS0#

(PMR[23] = 0 and
PMR[5] = 1) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[5] = 1)

TFTDCK

PMR[23] = 1 and
PMR[15] = 0

A9

GPIO20

(PMR[23] = 0 and
PMR[7] = 0) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[7] = 0)

DOCCS#

(PMR[23] = 0 and
PMR[7] = 1) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[7] = 1)

TFTD0

PMR[23] = 1 and
PMR[15] = 0

D10

GPIO1

(PMR[23] = 0 and
PMR[13] = 0) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[13] = 0)

IOCS1#

(PMR[23] = 0 and
PMR[13] = 1) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[13] = 1)

TFTD12

PMR[23] = 1 and
PMR[15] = 0

AB1

GPIO

Sub-ISA

N31

AB1C

PMR[23] = 0 or
(PMR[23] = 1 and
PMR[15] = 1)

GPIO20

PMR[23] = 1 and
PMR[15] = 0 and
PMR[7] = 0

DOCCS#

PMR[23] = 1 and
PMR[15] = 0 and
PMR[7] = 1

N30

AB1D

PMR[23] = 0 or
(PMR[23] = 1 and
PMR[15] = 1)

GPIO1

PMR[23] = 1 and
PMR[15] = 0 and
PMR[13] = 0

IOCS1#

PMR[23] = 1 and
PMR[15] = 0 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

Internal Test

TFT

Internal Test

V30

GXCLK

(PMR[29] = 0 and
PMR[23] = 0) or
(PMR[23] = 1 and
PMR[15] = 1)

FP_VDD_ON

PMR[23] = 1 and
PMR[15] = 0

TEST3

PMR[29] = 1 and
PMR[23] = 0

1.

The combination of PMR[21] = 1 and PMR[2] = 0 is undefined and should not be used.

2.

The combination of PMR[9] = 1 and PMR[4] = 0 is undefined and should not be used.

3.

These TFT outputs are reset to 0 by POR# if the TFT_PRSNT strap is pulled high or PMR[10] = 0. This relates to signals TFTD[17:0],
TFTDE, TFTDCK.

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