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AMD Geode™ SC1200/SC1201 Processor Data Book
Signal Definitions
32579B
3.4.9
Low Pin Count (LPC) Bus Interface Signals
Signal Name
Ball No.
Type
Description
Mux
LAD3
L29
I/O
LPC Address-Data.
Multiplexed command, address,
bidirectional data, and cycle status.
GPIO35
LAD2
L30
GPIO34
LAD1
L31
GPIO33
LAD0
M28
GPIO32
LDRQ#
L28
I
LPC DMA Request.
Encoded DMA request for LPC
interface.
Note:
If LDRQ# function is selected but not used, tie
LDRQ# high.
GPIO36
LFRAME#
K31
O
LPC Frame.
A low pulse indicates the beginning of a
new LPC cycle or termination of a broken cycle.
GPIO37
LPCPD#
K28
O
LPC Power-Down.
Signals the LPC device to prepare for
power shutdown on the LPC interface.
GPIO38/IRRX2
SERIRQ
J31
I/O
Serial IRQ.
The interrupt requests are serialized over a
single signal, where each IRQ level is delivered during a
designated time slot.
Note:
If SERIRQ function is selected but not used, tie
SERIRQ high.
GPIO39
Summary of Contents for Geode SC1200
Page 8: ...8 AMD Geode SC1200 SC1201 Processor Data Book List of Figures 32579B...
Page 16: ...16 AMD Geode SC1200 SC1201 Processor Data Book Overview 32579B...
Page 24: ...24 AMD Geode SC1200 SC1201 Processor Data Book Architecture Overview 32579B...
Page 364: ...364 AMD Geode SC1200 SC1201 Processor Data Book Debugging and Monitoring 32579B...