peb2255 Infineon Technologies Corporation, peb2255 Datasheet - Page 56

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

(1T2B) is selected the receive route clock is recovered from the data stream. The 1T2B
decoder does not correct any errors. In case of NRZ coding data is latched with the
falling edge of signal RCLKI. The HDB3 code is used along with double violation
detection or extended code violation detection (selectable). In AMI code all code
violations is detected.
The detected errors increment the code violation counter (16 bits length).
When using the optical interface with NRZ coding, the decoder is by-passed and no code
violations are detected.
The signal at the ternary interface is received at both ends of a transformer.
The E1-operating modes 75 or 120
This selection does not require changing transformers.
Figure 12
Table 9
Parameter
R
t
Data Sheet
2
2
:
( 1 %) [ ]
t
1
Receiver Configuration (E1)
Recommended Receiver Configuration Values (E1)
Line
t
2
t
1
are selectable by switching resistors in parallel.
56
R
2
Characteristic Impedance [ ]
1 :
RL1
RL2
120
240
FALC
2
Functional Description E1
R
ITS10967
FALC-LH V1.3
1 :
150
PEB 2255
75
2
2000-07