PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
19
S/UNI-MPH I/O TIMING CHARACTERISTICS
TA= -40° to +85°C, VDD=5V ±10%
Table 8
Symbol
- XCLK Input for Jitter Attenuation (Figure 40)
Description
Min
Max
Units
t
XCLK Frequency (typically 37.056
MHz ± 100 ppm for T1 format or
49.152 MHz ± 50 ppm for E1
50
MHz
XCLK
3
format)
tD
XCLK
XCLK Duty Cycle (at XCLK =
40
60
%
37.056 MHz for T1, 49.152 MHz for
5
E1)
Figure 40
- XCLK Input Timing for Jitter Attenuation
XCLK
1/t
XCLK
Table 9
Symbol
- TCLKI Input (Figure 41)
Description
Min
Max
Units
t
t
3,4
1.545
MHz
T1TCLKI
E1TCLKI
TCLKI Frequency for T1
(nominally 1.544 MHz ± 130 ppm)
3,4
2.049
MHz
TCLKI Frequency for E1
(nominally 2.048 MHz ± 50 ppm)
t
t
TCLKI Frequency for J2 bit rate
7
MHz
MHz
ns
J2TCLKI
ARTCLKI
format
TCLKI Frequency for arbitrary bit
rate format
25
tH
TTCLKI
TCLKI High Duration (for T1
165
6
formats)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
260
PMC [ PMC-SIERRA, INC ]
