T8207 Datasheet, PDF (21/158 Pages) Agere Systems – ATM Interconnect

Advance Data Sheet
September 2001
CelXpres T8207
ATM Interconnect
4 Hot Insertion
When a connector with proper pin sequencing is used, the Agere Systems Inc. GTL+ buffers withstand hot inser-
tion into a backplane without corrupting the cell bus or damaging the device. The ground pins on the connector
should extend beyond all other pins so that the ground connections are made first. In addition, the power pins on
the connector should extend beyond the signal pins so that the power connections are made before the signal but
after the ground connections.
During hot insertion, the cell bus is not corrupted because the GTL+ outputs go to a high-impedance state during
the powerup reset. Therefore, proper timing should be met in the external powerup reset circuit.
Agere Systems Inc.
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