STANDARD PRODUCT
PM4351 COMET
DATA SHEET
PMC-1970624
ISSUE 10
COMBINED E1/T1 TRANSCEIVER
Figure 6
- T1 Jitter Tolerance
ALGSEL=1 at 772 kHz
with 36 dB of attenuation
10
ALGSEL=0 at 772 kHz
with 36 dB of attenuation
Sine Wave
Jitter
Acceptable Range
Amplitude
P. to P. (UI)
Log Scale
1.0
Bellcore Spec.
AT&T Spec.
0.3
0.2
0.1
0.1
0.30 0.31
1.0
10
100
Sine Wave Jitter Frequency (kHz) Log Scale
For E1 applications, the input jitter tolerance complies with the ITU-T
Recommendation G.823 "The Control of Jitter and Wander Within Digital
Networks Which are Based on the 2048 kbit/s Hierarchy." Figure 7 illustrates
this specification and the performance of the phase-locked loop when the
ALGSEL register bit is logic 0.
PROPRIETARY AND CONFIDENTIAL
37
PMC [ PMC-SIERRA, INC ]
