peb22504 Infineon Technologies Corporation, peb22504 Datasheet - Page 44

• Manufacturer Part Number: peb22504
• Description: Quad Line Interface Unit For E1dt1dj1 Quadliu
• Manufacturer: Infineon Technologies Corporation

4.1.11
In the absence of any input jitter, the QuadLIU™ generates the output jitter as specified
in
Table 9
Specification
AT&T TR62411
ITU-T I.431
4.1.12
The elastic buffer can be placed in receive or transmit direction to generate a “jitter-free”
data stream. Different buffer sizes can be programmed by LOOP.BS(1:0):
• 00:
• 01:
• 10:
• 11:
Slips are performed in all buffer modes. After a slip is detected, the read pointer is
adjusted to one half of the current buffer size.
A slip condition is detected when the write pointer and the read pointer of the memory
are nearly coincident. If a slip condition is detected, a negative slip or a positive slip is
performed. For a negative slip, one half of the current buffer size is skipped. For a
positive slip, one half of the current buffer size is read out twice. A positive or negative
slip is indicated in the interrupt status bits ISR0.SLP and ISR0.SLN.
When bit CMDR.CEB is set, the data delay through the elastic buffer is set to half of the
current buffer size.
Data Sheet
Table
256 bits
128 bits
64 bits
32 bits
9.
Output Jitter
Elastic Buffer
Output Jitter
Lower Cutoff
10 Hz
8 kHz
10 Hz
20 Hz
700 Hz
Measurement Filter Bandwidth
Broadband
44
Upper Cutoff
8 kHz
40 kHz
40 kHz
100 kHz
100 kHz
Interface Description
Output Jitter
(UI peak to peak)
< 0.015
< 0.015
< 0.015
< 0.015
< 0.015
< 0.02
QuadLIU V1.1
PEB 22504
2001-02