PXB4219 Datasheet, PDF (255/290 Pages) Infineon Technologies AG – IWE8 Interworking Element for 8 E1/T1 Lines

Framer Interface in SYM8
RFCLK
FRDAT
FRMFB0
FTDAT
PXB4219 / PXB4220 / PXB4221
Electrical Characteristics
1
3
4
5
6
7
Figure 62 Framer Interface Timing in SYM 8.192 MHz
Table 40 Framer Interface Timing in SYM8
No. Parameter
Limit Values
Min
Typ
1
T_RFCLK: Period RFCLK
122
1A
F_RFCLK: Frequency RFCLK
-130 ppm 8,192
3
Setup time FRDAT before RFCLK 15
falling/rising (center of bit period)
4
Hold time FRDAT after RFCLK falling/ 15
rising (center of bit period)
5
Setup time FRMFBN¹⁾ before RFCLK 15
falling/rising
6
Hold time FRMFBN¹⁾ after RFCLK 15
falling
7
Delay RFCLK falling to FTDAT
3
1) _{For usage of FRMFBN in SYM mode see Chapter 7.24}
Unit
Max
ns
+130ppm MHz
ns
ns
ns
ns
32
ns
Data Sheet
255
2002-05-06