CTS9513API-2 datasheet(16/28 Pages) ETC

16 / 28 page

Celeritous Technical Services Corp

800.687.6510 / 806.793.0708

3308 34th St

FAX

806.793.0710

Lubbock, Texas 79410

http://www.celeritous.com

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Rev E

Tuesday, September 25,

CTS9513-2

5 Chan 16 bit 20MHz Counter/Timer

MODE E RATE GENERATOR WITH LEVEL

GATING

Mode E is similar to Mode D in that the counter will

count repetitively after being ARMed and as long as

the selected Gate line is asserted. As shown in

Figure 14, this allows gating of the pulse train or

square wave on and off from an external source via

the gate line.

SOURCE

DATA

ARM COMMAND

GATE

COUNT VALUE

TC OUTPUT

TOGGLE OUTPUT

COUNTER MODE E WAVEFORMS

L-1

L-2

L-3

K+2

K+1

K-1

...

L-1

Figure 14 - CTS9513 Counter Mode E Representative Waveforms

SOURCE

DATA

ARM COMMAND

GATE

L-1

COUNT VALUE

TC OUTPUT

TOGGLE OUTPUT

COUNTER MODE F WAVEFORMS

...

L-3

L-2

L-1

L-2

L-3

Figure 15 - CTS9513 Counter Mode F Representative Waveforms

MODE F NON-RETRIGGERABLE ONE

SHOT

Mode F is similar to Mode C with the exception that

the counter may be retriggered without receipt of a

new ARM Command. As shown in Figure 15, Once

the counter has been ARMed, and a valid Gate edge

has been received, the counter will count once to TC

and reload the counter from the Load register. It will

remain inactive until receipt of another Gate edge.

While

counting,

subsequent

gate

edges

are

disregarded.

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