XRT72L13 Datasheet, PDF (25/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

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PRELIMINARY
PIN DESCRIPTIONS
PIN #
NAME
65
A0
66
D0
67
A1
68
INT
69
D1
70
A2
71
MOTO
72
GND
73
D2
74
A3
XRT72L13
M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC
REV. P1.0.6
TYPE
I
I/O
I
O
I/O
I
I
****
I/O
I
DESCRIPTION
Address Bus Input (Microprocessor Interface) - LSB (Least Sig-
nificant Bit)
(Please see description for A8)
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)
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.
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)
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).
Ground Pin
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)
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