W83697HG Datasheet, PDF (11/109 Pages) Winbond – WINBOND LPC I/O

W83697HF/ HG
PIN DESCRIPTION, Continued.
PIN DESCRIPTION
INtd
TTL level input pin with internal pull down resistor
INtu
TTL level input pin with internal pull up resistor
INts
TTL level Schmitt-trigger input pin
INtsp3
3.3V TTL level Schmitt-trigger input pin
INc
CMOS level input pin
INcu
CMOS level input pin with internal pull up resistor
INcd
CMOS level input pin with internal pull down resistor
INcs
CMOS level Schmitt-trigger input pin
INcsu
CMOS level Schmitt-trigger input pin with internal pull up resistor
5.1 LPC Interface
SYMBOL
CLKIN
PME#
PCICLK
LDRQ#
SERIRQ
LAD[3:0]
LFRAME#
LRESET#
PIN
17
98
19
20
21
23-26
27
28
I/O
IN_tp3
OD_12p3
IN_tsp3
O_12p3
I/O12tp3
I/O_12tp3
IN_tsp3
IN_tsp3
FUNCTION
System clock input. According to the input frequency 24MHz or
48MHz, it is selectable through register. Default is 24MHz input.
Generated PME event.
PCI clock 33 MHz input.
Encoded DMA Request signal.
Serial IRQ input/Output.
These signal lines communicate address, control, and data
information over the LPC bus between a host and a peripheral.
Indicates start of a new cycle or termination of a broken cycle.
Reset signal. It can connect to PCIRST# signal on the host.
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