PEF80902HV11XP Lantiq, PEF80902HV11XP Datasheet - Page 40

• Manufacturer Part Number: PEF80902HV11XP
• Manufacturer: Lantiq

Specifications of PEF80902HV11XP

• Lead Free Status / Rohs Status: Compliant

PEF 80902
Functional Description
Start Awaking Uk0
On the receipt of AR in the C/I-channel the U-transceiver sends the awake signal U1W
to start an activation.
Synchronizing
After the successful awake procedure the U-transceiver trains its receiver coefficients
until it is able to detect the signals U2.
Reset
In state ’Reset’ a software-reset is performed.
Test
State “Test” is entered when the unconditional commands TM2-0=’SSP’ is applied. The
test signal SSP is issued as long as pin SSP is active or C/I=SSP is applied.
Transparent
The transmission line is fully activated. User data is transparently exchanged by U4/U5.
Transparent state is entered in the case of a loopback 2. The downstream device is
informed by C/I code AI that the transparent state has been reached
Note that in contrast to the former IEC-T state machine there is no resynchronization
mechanism. Once loss of framing (LOF) has been detected a deactivation is initiated.
Wait for Info U4H
The NT is synchronized and waits now for the permission (U4H) to go to the
’Transparent’ state.
Data Sheet
32
2001-11-12