MIC2593

Micrel

M9999-042204

6

April 2004

Pin Description (cont)

Pin Number

Pin Name

Pin Function

4

GPIA

General Purpose Inputs: The states of these two inputs are available by

38

GPIB

reading the Common Status Register, Bits [4:5]. If not used, connect each

pin to GND.

40

A1

SMBus Address Select Pins: Connect to ground or leave open in order to

41

A0

program device SMBus base address. These inputs have internal pull-up

A0

resistors to VSTBY[A/B].

48

SDA

SMBus Data: Bidirectional SMBus data line.

47

SCL

SMBus Clock: Input.

37

/INT

Interrupt Output: Open-drain, active-low. Asserted whenever a power fault

is detected if the INTMSK bit (CS Register Bit D[3]) is a logical "0". This

output is de-asserted by performing an "echo reset" to the appropriate fault

bit(s) in the STAT[A/B] and/or CS registers. This pin requires an external

pull-up resistor to V

33

GND

IC Ground Connections: Tie directly to the system’s analog ground

46

plane directly at the device.