TXC-04252AIPQ Transwitch Corporation, TXC-04252AIPQ Datasheet - Page 43

• Manufacturer Part Number: TXC-04252AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-04252AIPQ

• Pin Count: 160
• Screening Level: Industrial
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

OPERATION
The following sections detail the internal operation of the Quad E1 Mapper.
BUS INTERFACE MODES
The Quad E1 Mapper supports the following bus modes of operation:
Drop Mode
In the drop mode of operation, a TU/VT is terminated from either the A or B Drop bus to the receive output of
one of the four ports, without a return path in the transmit direction.
Single Unidirectional Ring Mode
In the single unidirectional ring mode of operation, a TU/VT is dropped from the A (or B) Drop bus, with the
return path the A (or B) Add bus. Timing for the TU/VT to be added to the A (or B) Add bus is derived from
either the A (or B) Drop bus, or from the A (or B) Add bus.
Multiplexer Mode
In the multiplexer mode of operation, a TU/VT is dropped from the A (or B) Drop bus, with the return path the B
(or A) Add bus. Timing for the TU/VT to be added to the A (or B) Add bus is derived from either the A (or B)
Drop bus, or from the A (or B) Add bus.
Dual Unidirectional Ring Mode
In the dual unidirectional ring mode of operation, a TU/VT is dropped from the A (or B) Drop bus, with the
return path both the A and B Add buses. Timing for the TU/VT to be added to the A (or B) Add bus is derived
from either the A (or B) Drop bus, or from the A (or B) Add bus.
Proprietary TranSwitch Corporation Information for use Solely by its Customers.
- Drop Mode
- Single Unidirectional Ring Mode
- Multiplexer Mode
- Dual Unidirectional Ring Mode
DATA SHEET
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Ed. 3, December 2000
TXC-04252
TXC-04252-MB
QE1M