CTS9513API-2 datasheet(18/28 Pages) ETC

18 / 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 I HARDWARE TRIGGERED DELAYED

PULSE STROBE

Mode I is similar to Mode G with the exception that

the counter is active only after receipt of an ARM

command and a valid Gate Edge. As illustrated in

Figure 18, the counter will count to TC, reload from

the Hold Register, count to TC then disarm itself.

Once a valid Gate edge has been received the gate

line has no further action on the counter.

SOURCE

DATA

ARM COMMAND

GATE

COUNT VALUE

TC OUTPUT

TOGGLE OUTPUT

L-1

...

H-3

H-2

H-1

...

COUNTER MODE I WAVEFORMS

L-2

L-1

Figure 18 - CTS9513 Counter Mode I Representative Waveforms

SOURCE

DATA

ARM COMMAND

GATE

COUNT VALUE

TC OUTPUT

TOGGLE OUTPUT

...

L-2

L-1

COUNTER MODE J WAVEFORMS

H-1

...

L-1

L-2

...

Figure 19 - CTS9513 Counter Mode J Representative Waveforms

MODE J VARIABLE DUTY CYCLE RATE

GENERATOR WITH NO HARDWARE

GATING

This mode is used primarily for generation of variable

duty cycle waveforms. Once armed the counter will

count repeatedly until disarmed. The counter will

count to the first TC, reload automatically from the

Hold

count

the

TC,

reload

automatically from the Load register and repeat the

cycle. If the toggle output mode is selected, the

output will have an on(or off) time equal to the load

count and off(on) time equal to the hold count. As

shown in Figure 19.

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