CLOCK AND FORMAT GENERATOR

TM 11-6625-3024-14/EE641-AC-MMA-010/E154 SYSEX/TO 33AA50-5-1-1

A 10 MHz crystal oscillator provides the basic

4-6. CLOCK AND FORMAT GENERATOR

clock input. The 10 MHz clock is applied to a

(Circuit Card 1A2A1) (See Figure FO-6)

divide-by-eight counter to produce 1.25 MHz clock

for the microprocessor. The 10 MHz clock also

The Clock and Format Generator circuits pro-

steps the Start/Stop Delay Counter. The Start/Stop

vide the proper timing for the read and write of

Delay Switches are preset to the desired start/stop

data. (See Figure 4-4, Clock and Format Gener-

Figure 4-4. Clock and Format Generator Block Diagram

4-8