SC3200 datasheet(79/447 Pages) AMD

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AMD Geode™ SC3200 Processor Data Book

Signal Definitions

Revision 5.1

STB#/WRITE#

AB1

A22

Data Strobe. When low, indicates to the

printer that valid data is available at the

printer port. This signal is in TRI-STATE after

a 0 is loaded into the corresponding control

Ω pull-up resis-

tor should be employed.

Write Strobe. Active low, used in EPP mode

to denote an address or data cycle. When

the cycle is aborted, WRITE# becomes inac-

tive (high).

TFTD17+

F_FRAME#

3.4.12

Parallel Port Interface Signals (Continued)

Signal Name

Ball No.

Type

Description

Mux

EBGA

TEPBGA

3.4.13

Fast Infrared (IR) Port Interface Signals

Signal Name

Ball No.

Type

Description

Mux

EBGA

TEPBGA

IRRX1

J28

AK8

IR Receive. Primary input to receive serial

data from the IR transceiver. Monitored dur-

ing power-off for wakeup event detection.

Note:

If selected as IRRX1 function but not

used, tie IRRX1 high.

SIN3

IRRX2/GPIO38

AJ9

K28

IR Receive 2. Auxiliary IR receiver input to

support a second transceiver. This input sig-

nal can be used when GPIO38 is selected

using PMR[14], and when AUX_IRRX bit in

SuperI/O is set.

LPCPD#

IRTX

C11

IR Transmit. IR serial output data.

SOUT3

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