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IDT72V8985 Datasheet(PDF) 7 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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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT72V8985 Datasheet(HTML) 7 Page - Integrated Device Technology

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Commercial Temperature Range
IDT72V8985 3.3V Time Slot Interchange
Digital Switch 256 x 256
Connection Memory High
Connection Memory Low
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
Channel 0
Channel 1
Channel 2
Channel 31
100001
100010
111111
Data Memory
0
0
0
0
0
0
1
1
0
1
0
2
0
1
1
3
1
0
0
4
1
0
1
5
1
1
0
6
1
1
1
7
Stream
0
1
1
0
1
1
Control Register
CRb7
External Address Bits
A5-A0
5707 drw08
100000
The Control Register is only accessed when A5=0.
All other address bits have no effect when A5=0.
When A5 =1, only 32 bytes are randomly accessable
via A0-A4 at any one instant. Which 32 bytes are
accessed is determined by the state of CRb0 -CRb4.
The 32 bytes correlate to 32 channel of one ST-BUS
stream.
CRb6CRb5CRb4CRb3CRb2CRb1CRb0
CRb4CRb3
CRb2CRb1CRb0
Figure 5. Addressing Internal Memories


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