IDT72V8985 Integrated Device Technology, IDT72V8985 Datasheet - Page 6

• Manufacturer Part Number: IDT72V8985
• Description: 3.3 Volt Time Slot Interchange Digital Switch 256 X 256
• Manufacturer: Integrated Device Technology

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