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IDT72V8985 Datasheet(PDF) 6 Page - Integrated Device Technology

Part No. IDT72V8985
Description  3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256
Download  14 Pages
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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IDT72V8985 Datasheet(HTML) 6 Page - Integrated Device Technology

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6
Commercial Temperature Range
IDT72V8985 3.3V Time Slot Interchange
Digital Switch 256 x 256
For Slot 1 ("A"): IN=32, OUT=1, DELAY=(32-32)+32+(1-1)=32 time slots minimum delay
For Slot 32 ("J"): IN=1, OUT=32, DELAY=(32-1)+32+(32-1)=94 time slots maximum delay
Figure 4. Constant Delay Mode
A B C D E F
G H
I
J
32 Slots
32 Slots
32 Slots
32 31.........7 6
5
4
3
2 1 Time Slot
Outgoing Now
Incoming Now
Outgoing Next
32 31........7
6
5
4
3 2
1
G H I
J
J
32 Slots
32 Slots
32 Slots
5706 drw07
Outgoing
Incoming
Switching
J
I
H
G F E
D C B A
J J
Time Slot 32 31 30 29 28............ 3
2 1
32 31 30 29 28............. 3 2 1 Time Slot
A B C D
E F G H
I
J
Time Slot 32 31 30 29 28............ 3
2 1
Figure 3. Variable Delay Mode
For J: DELAY=3 Slots, 32 Slots, 33 Slots, and 34 Slots
For G, H, and I: DELAY= 3 slots


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