pef22504 Infineon Technologies Corporation, pef22504 Datasheet - Page 100

• Manufacturer Part Number: pef22504
• Description: Quad E1/t1/j1 Line Interface Component For Long- And Short-haul Applications Pef 22504 E, Pef 22504 Ht, Version 2.1
• Manufacturer: Infineon Technologies Corporation

backplane interface. I.e. on the position of pointer R and W within the memory. A positive/negative slip is indicated
in the interrupt status bits ISR3.RSP and ISR3.RSN.
Figure 35
3.8
3.8.1
The following error monitoring and alarm handling is supported by the QuadLIU
•
•
•
Table 27
Alarm
Loss-Of-Signal
(LOS)
Transmit Line Short
(XLS)
Transmit Ones-Density
(XLO)
Data Sheet
Loss-Of-Signal: Detection and recovery is flagged by bit LSR0.LOS and ISR2.LOS.
Transmit Line Shorted: Detection and release is flagged by bit LSR1.XLS and ISR1.XLSC
Transmit Ones-Density: Detection and release is flagged by bit LSR1.XLO and ISR1.XLSC
The Receive Elastic Buffer as Circularly Organized Memory
Additional Receiver Functions
Error Monitoring and Alarm Handling
Summary of Alarm Detection and Release
S+, S-
No transitions (logical zeros) in a
programmable time interval of 16 to
4096 consecutive pulse periods.
Programmable receive input signal
threshold
More than 3 pulse periods with
highly increased transmit line
current on XL1/2
32 consecutive zeros in the transmit
data stream on XL1/2
Detection Condition
W :
R
:
:
Frame 2 Time Slots
Write Pointer (Route Clock controlled)
Read Pointer (System Clock controlled)
Limits for Slip Detection (mode dependent)
R
S-
100
R’
W
S+
Slip
Frame 1 Time Slots
Moment of Slip Detection
Clear Condition
Programmable number of ones (1 to 256) in
a programmable time interval of 16 to 4096
consecutive pulse periods. A one is a signal
with a level above the programmed
threshold.
Transmit line current limiter inactive, see
also
Cleared with each transmitted pulse
Chapter 3.9.7
ITD10952
TM
:
Functional Description
Rev. 1.3, 2006-01-25
QuadLIU
PEF 22504
TM