PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 254

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

9.6.2.3
Framer Interface in SYM2
Figure 61
Table 39
No.
1
1A
3
4
5
6
7
1)
Data Sheet
RFCLK
opmo.frri = 1
RFCLK
opmo.frri = 0
FRDAT
FRMFB0
FTDAT
For usage of FRMFBN in SYM mode see
Parameter
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/rising to FTDAT
RFCLK
RFCLK
Framer Interface in SYM Mode
Framer Interface Timing for SYM 2.048 MHz
Framer Interface AC Timing Characteristics in SYM2 Mode
: Period RFCLK
: Frequency RFCLK
7
1)
1)
after RFCLK
1
1
before RFCLK
Chapter 7.24
254
5
Limit Values
Min
15
15
15
15
3
6
PXB4219 / PXB4220 / PXB4221
3
Typ
488
2,048
Electrical Characteristics
4
Max
32
2002-05-06
Unit
ns
MHz
ns
ns
ns
ns
ns