PEF80912HV14XT Lantiq, PEF80912HV14XT Datasheet - Page 31

• Manufacturer Part Number: PEF80912HV14XT
• Manufacturer: Lantiq

Specifications of PEF80912HV14XT

• Lead Free Status / Rohs Status: Supplier Unconfirmed

U-Interface Events:
ACT = 0/1
DEA = 0/1
UOA = 0/1
Timers
The start of timers is indicated by TxS, the expiry by TxE.
are used:
•
Table 8
Timer
T1
T7
T11
T12
T13
T14
T20
Data Sheet
ACT-bit received from LT-side.
– ACT = 1 requests the U-transceiver to transmit transparently in both directions. In
– ACT = 0 indicates that layer-2 functionality is not available.
DEA-bit received from the LT-side
– DEA = 0 informs the U-transceiver that a deactivation procedure has been started
– DEA = 1 reflects the case when DEA = 0 was detected by faults due to e.g.
UOA-bit received from network side
– UOA = 0 informs the U-transceiver that only the U-interface is to be activated. The
– UOA = 1 requests the S/T-interface (if present) to activate.
Timers Used
the case of loop-backs, however, transparency in both directions of transmission is
established when the receiver is synchronized.
by the LT-side.
transmission errors and allows the U-transceiver to recover from this situation.
S/T-interface must be deactivated.
Duration
(ms)
15000
40
9
5500
15000
0.5
10
Function
Supervisor for start-up
Hold time
TN-transmission
Supervisor EC-converge
Frame synchronization
Hold time
Hold time
23
Table 8
Functional Description
PEF 80912/80913
shows which timers
State
Receive reset
Alerting
EC-training
Pend. receive
reset
Pend. timing
Wait for SF
2001-03-29