PEF24901HV22XT Lantiq, PEF24901HV22XT Datasheet - Page 53

• Manufacturer Part Number: PEF24901HV22XT
• Manufacturer: Lantiq

Specifications of PEF24901HV22XT

• Control Interface: HDLC
• Lead Free Status / Rohs Status: Compliant

DFE-T
PEF 24901
Functional Description
6 ms
7 ms
LT
INFO U2W
INFO U2
2.133 ms
13 ms
NT
INFO U1W
INFO U1A
2.133 ms
ITD06386
Figure 15
Awake Procedure Initiated by the NT
Acting as Calling Station
After sending the awake signal, the awaking device waits for the acknowledge. After
12 ms the awake signal is repeated, if no acknowledge has been recognized. If an
acknowledge signal has been recognized, the DFE-T V2.2 waits for its possible
repetition (in case of previous coincidence of two awake signals).
If no repetition was detected, the DFE-T V2.2 starts transmitting U2 with a delay of 7 ms.
If such a repetition is detected, the DFE-T V2.2 interprets it as an awake signal and
behaves like a device awoken by the far-end.
Acknowledging a Wake-Up Call
If the DFE-T V2.2 detects an awake signal on U, an acknowledge signal is sent out.
Afterwards the DFE-T V2.2 waits for a possible repetition of the awake signal (in case
the acknowledge signal has not been recognized).
If no repetition is found, the awoken DFE-T V2.2 starts sending U2 after 7 ms from
detecting the awake signal. If a repeated awake signal is found, the procedure in the
awoken DFE-T V2.2 starts again.
3.5.9
C/I Codes
The Control/Indicate (C/I) channel is used to control the operational status of the DFE-T
V2.2 and to issue corresponding indications. The four C/I channels operate completely
independently
Table 13
presents all defined C/I codes (former C/I code names of the DFE-T V1.2 are
given in brackets).
Data Sheet
54
2002-09-30