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HZ?EX4R
XR-2321A
V.23/V.21 Single Chip Modem
G EN ER A L DESCRIPTIO N
PIN ASSIG N M EN T
T h e X R - 2 3 2 1 A is a s in g le -c h ip a s y n c h r o n o u s
co ntinuous p h a se F S K (
