XRT72L13 datasheet(25/370 Pages) EXAR

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XRT72L13

M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

PRELIMINARY

REV. P1.0.6

Address Bus Input (Microprocessor Interface) - LSB (Least Sig-

nificant Bit)

(Please see description for A8)

I/O

Bi-directional Data Bus (Microprocessor Interface Section):

Please see description for D7

Address Bus Input (Microprocessor Interface) - LSB (Least Sig-

nificant Bit)

(Please see description for A8)

INT

Interrupt Request Output:

This open-drain, active-low output signal will be asserted when the

Framer is requesting interrupt service from the local microprocessor.

This output pin should typically be connected to the "Interrupt

Request" input of the local microprocessor.

I/O

Bi-directional Data Bus (Microprocessor Interface Section):

Please see description for D7

Address Bus Input (Microprocessor Interface) - LSB (Least Significant

Bit)

(Please see description for A8)

MOTO

Motorola/Intel Processor Interface Select Mode:

This input pin allows the user to configure the Microprocessor Inter-

face to interface with either a "Motorola-type" or "Intel-type" micropro-

cessor/microcontroller. Tying this input pin to VCC, configures the

microprocessor interface to operate in the Motorola mode (e.g., the

Framer can be readily interfaced to a "Motorola type" local micropro-

cessor). Tying this input pin to GND configures the Microprocessor

Interface to operate in the Intel Mode (e.g., the Framer can be readily

interfaced to a Intel type" local microprocessor).

GND

****

Ground Pin

I/O

Bi-directional Data Bus (Microprocessor Interface Section):

Please see description for D7

Address Bus Input (Microprocessor Interface) - LSB (Least Sig-

nificant Bit)

(Please see description for A8)

PIN DESCRIPTIONS

PIN #NAME

TYPE

DESCRIPTION

XRT72L13 Datasheet(PDF) 25 Page - Exar Corporation

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