IPAC-X datasheet(83/270 Pages) INFINEON

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IPAC-X

PSB/PSF 21150

Description of Functional Blocks

Data Sheet

2003-01-30

3.5.2.2

States (LT-S)

G1 Deactivated

The transceiver is not transmitting. There is no signal detected on the S/T-interface, and

no activation command is received in the C/I channel. The clocks are deactivated if

MODE1-CFS is set to 1. Activation is possible from the S/T interface and from the IOM-2

interface.

G2 Pending Activation

As a result of an INFO 0 detected on the S/T line or an ARD command, the transceiver

begins transmitting INFO 2 and waits for reception of INFO 3. The timer to supervise

reception of INFO 3 is to be implemented in software. In case of an ARL command, loop

2 is closed.

G3 Activated

Normal state where INFO 4 is transmitted to the S/T-interface. The transceiver remains

in this state as long as neither a deactivation nor a test mode is requested, nor the

receiver looses synchronism.

When receiver synchronism is lost, INFO 2 is sent automatically. After reception of

INFO 3, the transmitter keeps on sending INFO 4.

G2 Lost Framing

This state is reached when the transceiver has lost synchronism in the state G3

activated.

G4 Pending Deactivation

This state is triggered by a deactivation request DR. It is an unstable state: indication DI

(state “G4 wait for DR.”) is issued by the transceiver when:

either INFO0 is received for a duration of 16 ms,

or an internal timer of 32 ms expires.

G4 Wait for DR

Final state after a deactivation request. The transceiver remains in this state until DC is

issued.

Unconditional States

Test Mode - SSP

Single alternating pulses are sent on the S/T-interface.

IPAC-X Datasheet(PDF) 83 Page - Infineon Technologies AG