STANDARD PRODUCT
PM4351 COMET
DATA SHEET
PMC-1970624
ISSUE 10
COMBINED E1/T1 TRANSCEIVER
Figure 11
- TJAT Jitter Transfer
0
-10
-20
-30
-40
-50
62411
max
43802
max
62411
min
JITTER
GAIN
dB
JAT
response
1
10
100
1k
10k
5.7
JITTER FREQUENCY
Hz
T1
In the non-attenuating mode, when the FIFO is within one UI of overrunning or
under running, the tracking range is 1.48 MHz to 1.608 MHz.
The guaranteed linear operating range for the jittered input clock is 1.544 MHz
± 200 Hz with worst case jitter (61 UIpp), and maximum system clock frequency
offset (± 100 ppm). The nominal range is 1.544 MHz ± 963 Hz with no jitter or
system clock frequency offset.
E1
In the non-attenuating mode, when the FIFO is within one UI of overrunning or
under running, the tracking range is 2.13 MHz to 1.97 MHz.
The guaranteed linear operating range for the jittered input clock is 2.048 MHz
± 300 Hz with worst case jitter (61 UIpp), and maximum system clock frequency
offset (± 100 ppm). The nominal range is 2.048 MHz ± 1277 Hz with no jitter or
system clock frequency offset.
PROPRIETARY AND CONFIDENTIAL
61
PMC [ PMC-SIERRA, INC ]
