ITT - Index of

ITT9309
MSI Dual Four-Input Multiplexer
OUTPUT
R(SYIICHRONIl(R
Figure 17 - 16·BIT PATTERN GENERATOR
This application illustrates the use of ITT9309
and ITT9020 in the design of one channel of a
16 bit pattern generator. Each channel requires
1/2 ITT9020, 1/2 ITT9002 and 2-1/2 ITT9309.
Each channel consists of a switch serializerl
pattern generator and resynchronizer sections
with a modulo 16"binary counter common to all
channels.
The two least significant bits and two most
significant bits of the counter control the first
and second stages of multiplexing .respectively.
In this manner four bits are multiplexed
on each of the four lines from the first stage to
the second stage. Every four clock times a new
input line containing four multiplexed bits is
selected by the second stage of the serializer
thus serializing the 16 input bits from the
switches.
The resynchronizer flip flop is used to eliminate
decoding spikes.
CDUNT
VALUE t----------~
TIME
'Tn~ "*
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