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AMD Geode™ SC2200 Processor Data Book 375
Electrical Specifications
32580B
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 KΩ resistors are within a range of 20
KΩ to 50 KΩ. 100 KΩ resistors are within a range of 90
KΩ to 250 KΩ.
Note 2. Controlled by software.
Signal Name Ball No. PU/PD
Typ (Note 1)
Value [Ω]