XR72L52 Datasheet, PDF (27/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
XRT72L52
REV. 1.0.1
PIN DESCRIPTION
PIN #
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
PIN NAME
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
GND
D(0)
D(1)
D(2)
D(3)
VDD
D(4)
D(5)
D(6)
D(7)
GND
TYPE
DESCRIPTION
I Address Bus Input (Microprocessor Interface) - LSB (Least Significant
Bit):
See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I See Description for Pin 103
I Address Bus Input (Microprocessor Interface) - MSB (Most Significant Bit):
This input pin, along with inputs A(0) - A(8) are used to select the on-chip
Framer register and RAM space for READ/WRITE operations with the local
microprocessor.
**** Ground
I/O Bit 0 (LSB) of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
I/O Bit 1 of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
I/O Bit 2 of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
I/O Bit 3 of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
**** Power Supply 3.3V + 5%
I/O Bit 4 of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
I/O Bit 5 of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
I/O Bit 6 of Bi-Directional Data Bus (Microprocessor Interface Section):
See Description for Pin 113
I/O Bit 7 (MSB) of Bi-Directional Data Bus (Microprocessor Interface Section):
This pin, along with pins D(0) - D(6), function as the Microprocessor Interface bi-
directional data bus and is intended to be interfaced to the local microprocessor.
**** Ground
11