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7 pull-up and pull-down resistors, Table 9-9, Balls with pu/pd resistors – AMD Geode SC3200 User Manual

Page 356

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356

AMD Geode™ SC3200 Processor Data Book

Electrical Specifications

32581C

9.1.7

Pull-Up and Pull-Down Resistors

The following table lists input balls that are internally con-
nected to a pull-up (PU) or pull-down (PD) resistor. If these
balls are not used, they do not require connection to an
external PU or PD resistor.

Note:

The resistors described in this table are imple-
mented as transistors. The resistance for PUs
assumes V

IN

= V

SS

and for PDs assumes V

IN

=

V

IO

.

Table 9-9. Balls with PU/PD Resistors

Signal Name

Ball No.

PU/

PD

Typ (Note 1)

Value [

Ω]

PCI

FRAME#

D8

PU

22.5K

C/BE[3:0]#

H4, F3, J2, L1

PU

22.5K

PAR

J4

PU

22.5K

IRDY#

F2

PU

22.5K

TRDY#

F1

PU

22.5K

STOP#

G1

PU

22.5K

LOCK#

H3

PU

22.5K

DEVSEL#

E4

PU

22.5K

PERR#

H2

PU

22.5K

SERR#

H1

PU

22.5K

REQ[1:0]#

A5, B5

PU

22.5K

INTA#

D26

PU

22.5K

INTB#

C26

PU

22.5K

INTC#

C9

PU

22.5K

INTD#

AA2

PU

22.5K

Low Pin Count (LPC)

LAD[3:0]

L29, L30, L31,

M28

PU

22.5K

LDRQ

L28

PU

22.5K

SERIRQ

J31

PU

22.5K

System (Straps)

CLKSEL[3:0]

P30, D29,

AF3, B8

PD

100K

BOOT16

C8

PD

100K

TFT_PRSNT

P29

PD

100K

LPC_ROM

D6

PD

100K

FPCI_MON

A4

PD

100K

DID[1:0]

C6, C5

PD

100K

ACCESS.bus (Note 2)

AB1C

N31

PU

22.5K

AB1D

N30

PU

22.5K

AB2C

N29

PU

22.5K

AB2D

M29

PU

22.5K

Parallel Port

AFD#/DSTRB#

D22

PU

22.5K

PE

D17

PUNote

2

22.5K

PDNote

2

22.5K

SLIN#/ASTRB#

B20

PU

22.5K

STB#/WRITE#

A22

PU

22.5K

INIT#

B21

PU

22.5K

JTAG

TCK

E31

PU

22.5K

TMS

F28

PU

22.5K

TDI

F29

PU

22.5K

TRST#

E29

PU

22.5K

GPIO (Note 2)

GPIO1

D10, N30

PU

22.5K

GPIO6

D28

PU

22.5K

GPIO7

C30

PU

22.5K

GPIO8

C31

PU

22.5K

GPIO9

C28

PU

22.5K

GPIO10

B29

PU

22.5K

GPIO11

AJ8

PU

22.5K

GPIO12

N29

PU

22.5K

GPIO13

M29

PU

22.5K

GPIO14

D9

PU

22.5K

GPIO15

A8

PU

22.5K

GPIO16

V31

PU

22.5K

GPIO17

A10

PU

22.5K

GPIO18

AG1

PU

22.5K

GPIO19

C9

PU

22.5K

GPIO20

A9, N31

PU

22.5K

GPIO32

M28

PU

22.5K

GPIO33

L31

PU

22.5K

GPIO34

L30

PU

22.5K

GPIO35

L29

PU

22.5K

GPIO36

L28

PU

22.5K

GPIO37

K31

PU

22.5K

GPIO38

K28

PU

22.5K

GPIO39

J31

PU

22.5K

Power Management

PWRBTN#

AH5

PU

100K

GPWIO[2:0]

AJ6, AK5,

AH6

PU

100K

Test and Measurement

GTEST

F30

PD

22.5K

Note 1.

Accuracy is: 22.5 K

Ω resistors are within a range of 20

K

Ω to 50 KΩ. 100 KΩ resistors are within a range of 90

K

Ω to 250 KΩ.

Note 2.

Controlled by software.

Signal Name

Ball No.

PU/

PD

Typ (Note 1)

Value [

Ω]