4.6 LPC Interface Signals
Name
Type
Description
LAD[3:0] /
FWH[3:0]
I/O
LPC Multiplexed Command, Address, Data:
For LAD[3:0],
internal pull-ups are provided.
LFRAME# /
FWH4
O
LPC Frame:
LFRAME# indicates the start of an LPC cycle,
or an abort.
LDRQ0#,
LDRQ1# /
GPIO23
I
LPC Serial DMA/Master Request Inputs:
LDRQ[1:0]# are
used to request DMA or bus master access. These signals are
typically connected to an external Super I/O device. An
internal pull-up resistor is provided on these signals.
LDRQ1# may optionally be used as GPIO.