Signal Definitions

32580B

Table 3-6. Three-Signal/Group Multiplexing (Continued)

 

 

Default

 

Alternate1

 

Alternate2

 

 

 

 

 

 

 

 

 

 

Ball No.

Signal

 

Configuration

Signal

 

Configuration

Signal

 

Configuration

 

 

 

 

 

 

 

 

 

 

 

 

Internal Test

 

Internal Test

 

TFT

 

 

 

 

 

 

 

 

 

 

V30

GXCLK

 

PMR[23] = 0 and

TEST3

 

PMR[23] = 0 and

FP_VDD_ON

 

PMR[23] = 1

 

 

 

PMR[29] = 0

 

 

PMR[29] = 1

 

 

 

 

 

 

 

 

 

 

 

 

 

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.

Table 3-7. Four-Signal/Group Multiplexing

Ball

 

Default

Alternate1

Alternate2

Alternate3

 

 

 

 

 

 

 

 

 

 

No.

Signal

 

Configuration

Signal

Configuration

Signal

 

Configuration

Signal

Configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

GPIO

UART2

 

IDE2

Internal Test

 

 

 

 

 

 

 

 

 

 

 

C30

GPIO7

 

PMR[17] = 0

RTS2#

PMR[17] = 1

IDE_DACK1#

 

PMR[17] = 0

SDTEST0

PMR[17] = 1

 

 

 

and

 

and

 

 

and

 

and

C31

GPIO8

 

CTS2#

IDE_DREQ1

 

SDTEST4

 

PMR[8] = 0

PMR[8] = 0

 

PMR[8] = 1

PMR[8] = 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D28

GPIO6

 

PMR[18] = 0

DTR2#/BOUT2

PMR[18] = 1

IDE_IOR1#

 

PMR[18] = 0

SDTEST5

PMR[18] = 1

 

 

 

and

 

and

 

 

and

 

and

C28

GPIO9

 

DCD2#

IDE_IOW1#

 

SDTEST2

 

PMR[8] = 0

PMR[8] = 0

 

PMR[8] = 1

PMR[8] = 1

 

 

 

 

 

 

 

B29

GPIO10

 

DSR2#

IDE_IORDY1

 

SDTEST1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AMD Geode™ SC2200 Processor Data Book

49

Page 47
Image 47
AMD SC2200 manual Four-Signal/Group Multiplexing, Gxclk, TEST3, Fpvddon