PEF80902HV11XT Lantiq, PEF80902HV11XT Datasheet - Page 39

• Manufacturer Part Number: PEF80902HV11XT
• Manufacturer: Lantiq

Specifications of PEF80902HV11XT

• Lead Free Status / Rohs Status: Compliant

PEF 80902
Functional Description
Acknowledge Sent / Receive
After having sent the awake signal, the U-transceiver has received the acknowledge
wake tone. If being awoken the U-transceiver has sent the acknowledge. In both cases
the U-transceiver waits for possible repetition or time-out.
Awake Signal Sent
The NT has sent out the awake signal U1W and waits now for a response. If the LT does
not react in time timer T6 expires and the NT repeats its wake-up call.
Deactivated
Only in “Deactivated” state the device may enter the power-down mode.
Deactivating
State Deactivating assures that the C/I-channel code DC is issued four times before
entering the ’Deactivated’ state.
®
IOM
Awaked
The U-transceiver is deactivated, but may not enter the power-down mode.
Loss of Framing
This state is entered on loss of framing (LOF). No signal is transmitted on the U-interface.
A receiver-reset is performed by.
Note that there is no return to the ’Transparent’ state that has been possible before in
the former IEC-T based state machine.
Pending Deactivation
The U-transceiver has received U0. The U-transceiver remains at least 0.5ms in this
state before it accepts DI.
SBC Synchronizing
The NT is now synchronized and indicates this by AR/ARL towards the downstream
device. The NT waits for the acknowledge ’AI’ from the downstream device.
Sending Awake-Ack.
On the receipt of the awake signal U2W the U-transceiver responds with the
transmission of U1W.
Data Sheet
31
2001-11-12