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STANDARD MICROSYSTEMS
CORPORATIONt/
COM 5046 cOM5046T
Baud Rate Generator
Programmable Divider
FEATURES
o On chip crystal oscillator or external frequency input
o Choice of 16 output frequencies
016 asynchronous/synchronous baud rates
o Direct UART/USRT/ASTRO/USYNRT compatibility
o High frequency reference output o TTL, MOS compatibility
PIN CONFIGURATION
XTAUEXT1 1 XTAUEXT2 2
+5v 3 NC 41 GND.5
NC 61
+12v 71
.J
14 fOUT
13 A
12 B
~11 C ~10 D ~9 ST ~8 fx/4
I
BLOCK DIAGRAM
REPROGRAM MABLE FREQUENCY SELECT
ROM
XTAUEXT1 XTAUEXT2
XTAL
~CLOCK
BUFFER
DIVIDER
+2 fouT
+4
,l A J..