PEF24901HV22XP Lantiq, PEF24901HV22XP Datasheet - Page 59

• Manufacturer Part Number: PEF24901HV22XP
• Manufacturer: Lantiq

Specifications of PEF24901HV22XP

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

RES
SSP
1)
Pins
RES
SSP
U-Interface Events
U0
U1
U3
AWR
AWT
TxE
Data Sheet
Undefined C/I-code intputs may not open the analog loopback.
Reset
Unconditional command which resets the functions related to the channel;
no line signal (signal U0) will be sent out.
Send Single Pulses
Unconditional command which requests the transmission of single pulses
with a period of 1 ms.
Pin-Reset
A HW reset was applied and released again. Pin reset impacts all line ports
while the SW selection impacts only the chosen line . As long as pin RES is
low, the issued C/I-code is DI instead of DEAC for all channels. After putting
RES to high the C/I-codes change to DEAC.
Pin-Send Single Pulses
Corresponds to C/I code ’SSP’ besides the fact that the HW selection
impacts all line ports while the SW selection impacts only the chosen line .
C/I-message DEAC will be issued.
U0 detected
U0 is recognized after one complete frame with continuous zero level.
U1 detected
The U-transceiver detects U1 if continuous binary ’0’ is found on the
descrambler output for at least 8 subsequent U-frames. U1 is detected after
8 to 9 ms.
U3 detected
The U-transceiver detects U3 if continuous binary ’1’ is found on the
descrambler output for at least 8 subsequent U-frames. U3 is detected after
8 to 9 ms.
Awake signal (U1W) detected
Awake signal (U2W) has been sent out
Timer ended, the started timer has expired
60
Functional Description
PEF 24901
2002-09-30
DFE-T