PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 255

• Manufacturer Part Number: PXB4221
• Description: IWE8 Interworking Element for 8 E1/T1 Lines
• Manufacturer: Infineon Technologies AG

Framer Interface in SYM8
Figure 62
Table 40
No.
1
1A
3
4
5
6
7
1)
Data Sheet
RFCLK
FRDAT
FRMFB0
FTDAT
For usage of FRMFBN in SYM mode see
T
F
Setup time FRDAT before RFCLK
falling/rising (center of bit period)
Hold time FRDAT after RFCLK falling/
rising (center of bit period)
Setup time FRMFBN
falling/rising
Hold time FRMFBN
falling
Delay RFCLK falling to FTDAT
Parameter
RFCLK
RFCLK
Framer Interface Timing in SYM 8.192 MHz
Framer Interface Timing in SYM8
: Period RFCLK
: Frequency RFCLK
1)
1)
after RFCLK
before RFCLK
Chapter 7.24
5
255
Limit Values
Min
-130 ppm 8,192
15
15
15
15
3
6
7
PXB4219 / PXB4220 / PXB4221
3
Typ
122
Electrical Characteristics
1
4
Max
+130ppm MHz
32
2002-05-06
Unit
ns
ns
ns
ns
ns
ns