peb2255 Infineon Technologies Corporation, peb2255 Datasheet - Page 340

• Manufacturer Part Number: peb2255
• Description: E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
• Manufacturer: Infineon Technologies Corporation

Table 59
No.
62
63
1)
2)
•
Figure 64
Note: 12.352-MHz or 16.384-MHz crystal specified for C
Data Sheet
to fulfill E1/T1/J1 requirements in free running mode
This value includes the capacitance of the external capacitor plus all parasitic capacitances. The value for the
external capacitor has to be chosen depending on the printed circuit board layout. A typical value is 10 pF with
5 pF parasitic capacitance.
Parameter
Clock High Phase
Clock Low Phase
Clock accuracy
Motional Capacitance C
Shunt Capacitance C
Load Capacitance C
Resonance Resistance R
f -
f
0
f
0
XTAL Timing Parameter Values (cont’d)
External Pullable Crystal Tuning Range
-100
-150
-200
-250
ppm
250
150
100
-50
50
0
7.5
10
L
2)
0
1
12.5
r
min.
20
25
20
25
25
15
Limit Values
340
typ.
17.5
15
Load Capacitance
max.
32
20
40
7
1)
L
=15 pF
Electrical Characteristics
Unit
ns
ns
ppm
fF
pF
pF
22.5
pF
FALC-LH V1.3
Condition
XTAL1, XTAL3
XTAL3
XTAL1, XTAL3
XTAL3
XTAL1, XTAL3
XTAL1, XTAL3
XTAL1, XTAL3
XTAL1, XTAL3
XTAL1, XTAL3
ITD08571
27.5
PEB 2255
2000-07