PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 248

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

Table 34
No.
2
2A
3
1)
2)
9.6.2
9.6.2.1
Framer Receive Interface
Figure 57
Data Sheet
RFCLK
FRCLK
FRFRS
FRDAT
FRMFB
The frequency should be equal or higher than RXCLK and TXCLK of the UTOPIA interface
Only required if the Internal Clock Recovery Circuit is used for SRTS
Parameter
GIM T1:
others:
T
F
Pulse width RESET low
CLK52
CLK52
Framer Interface
Framer Interface in FAM
Framer Receive Interface Timing in FAM
Clock and Reset Interface AC Timing Characteristics (cont’d)
: Period CLK52
: Frequency CLK52
3
2)
1
2)
3
4
248
6
Limit Values
Min
18,53
24,58
-50 ppm
-50 ppm
3xT
5
7
PXB4219 / PXB4220 / PXB4221
CLOCK
Typ
25
25
19.29
51.84
Electrical Characteristics
2
Max
38,88
38,88
+50 ppm ns
+50 ppm MHz
2002-05-06
Unit
MHz
MHz