Signal Definitions

32581C

3.3Multiplexing Configuration

The tables that follow list multiplexing options and their configurations. Certain multiplexing options may be chosen per signal; others are available only for a group of signals.

Where ever a GPIO pin is multiplexed with another func- tion, there is an optional pull-up resistor on this pin; after

system reset, the pull-up is present. This pull-up resistor can be disabled by writing Core Logic registers. The config- uration is without regard to the selected ball function. The above applies to all pins multiplexed with GPIO, except GPIO12, GPIO13, and GPIO16.

Table 3-5. Two-Signal/Group Multiplexing

 

 

Default

 

Alternate

 

 

 

 

 

 

 

Ball No.

Signal

 

Configuration

Signal

 

Configuration

 

 

 

 

 

 

 

 

 

IDE

TFT, PCI, GPIO, System

 

 

 

 

 

 

 

AD3

IDE_ADDR0

 

PMR[24] = 0

TFTD3

 

PMR[24] = 1

 

 

 

 

 

 

 

AE1

IDE_ADDR1

 

 

TFTD2

 

 

 

 

 

 

 

 

 

U2

IDE_ADDR2

 

 

TFTD4

 

 

 

 

 

 

 

 

 

AC3

IDE_DATA0

 

 

TFTD6

 

 

 

 

 

 

 

 

 

AC1

IDE_DATA1

 

 

TFTD16

 

 

 

 

 

 

 

 

 

AC2

IDE_DATA2

 

 

TFTD14

 

 

 

 

 

 

 

 

 

AB4

IDE_DATA3

 

 

TFTD12

 

 

 

 

 

 

 

 

 

AB1

IDE_DATA4

 

 

FP_VDD_ON

 

 

 

 

 

 

 

 

 

AA4

IDE_DATA5

 

 

CLK27M

 

 

 

 

 

 

 

 

 

AA3

IDE_DATA6

 

 

IRQ9

 

 

 

 

 

 

 

 

 

AA2

IDE_DATA7

 

 

INTD#

 

 

 

 

 

 

 

 

 

Y3

IDE_DATA8

 

 

GPIO40

 

 

 

 

 

 

 

 

 

Y2

IDE_DATA9

 

 

DDC_SDA

 

 

 

 

 

 

 

 

 

Y1

IDE_DATA10

 

 

DDC_SCL

 

 

 

 

 

 

 

 

 

W4

IDE_DATA11

 

 

GPIO41

 

 

 

 

 

 

 

 

 

W3

IDE_DATA12

 

 

TFTD13

 

 

 

 

 

 

 

 

 

V3

IDE_DATA13

 

 

TFTD15

 

 

 

 

 

 

 

 

 

V2

IDE_DATA14

 

 

TFTD17

 

 

 

 

 

 

 

 

 

V1

IDE_DATA15

 

 

TFTD7

 

 

 

 

 

 

 

 

 

Y4

IDE_IOR0#

 

 

TFTD10

 

 

 

 

 

 

 

 

 

AD1

IDE_IORDY0

 

 

TFTD11

 

 

 

 

 

 

 

 

 

AC4

IDE_DREQ0

 

 

TFTD8

 

 

 

 

 

 

 

 

 

AD2

IDE_IOW0#

 

 

TFTD9

 

 

 

 

 

 

 

 

 

AF2

IDE_CS0#

 

 

TFTD5

 

 

 

 

 

 

 

 

 

P2

IDE_CS1#

 

 

TFTDE

 

 

 

 

 

 

 

 

 

AD4

IDE_DACK0#

 

 

TFTD0

 

 

 

 

 

 

 

 

 

AA1

IDE_RST#

 

 

TFTDCK

 

 

 

 

 

 

 

 

 

AF1

IRQ14

 

 

TFTD1

 

 

 

 

 

 

 

 

 

 

 

Sub-ISA

 

 

GPIO

 

 

 

 

 

 

 

D11

TRDE#

 

PMR[12] = 0

GPIO0

 

PMR[12] = 1

 

 

 

 

 

 

 

 

 

 

 

 

 

AMD Geode™ SC3200 Processor Data Book

 

45

Page 45
Image 45
AMD SC3200 manual Multiplexing Configuration, Two-Signal/Group Multiplexing, Default Alternate Ball No Signal Configuration