peb2255 Infineon Technologies Corporation, peb2255 Datasheet - Page 36

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

Table 4
Pin No.
71
Data Sheet
Symbol
RFSP
FREEZS
Pin Definitions - System Interface (cont’d)
Input (I)
Output (O)
Supply (S)
O
O
O
Function
Receive Frame Synchronous Pulse
E1: FMR3.CFRZ = 0
T1/J1: XC0.SFRZ = 0
Active low framing pulse derived from the
received PCM route signal. During loss of
synchronization (bit FRS0.LFA) this pulse is
suppressed (not influenced during alarm
simulation).
The pulse frequency is 8 kHz, pulse width is 488
ns (E1) or 648 ns (T1/J1).
PRBS Monitor Status
The status of the PRBS monitor is output on this
pin, if FMR3.CFRZ = 0 (E1) or XC0.SFRZ = 1
(T1/J1) and LCR1.EPRM = 1. It is set high, if the
PRBS monitor is in synchronous state.
Freeze Signaling (T1/J1)
If XC0.SFRZ = 1 (T1/J1) or FMR3.CFRZ = 1
(E1) and LCR1.EPRM = 0, the Freeze Signaling
Status is indicated.
Register access
(LOOP.SPN=0 and LIM3.ESY=0):
• E1: Bit FRS1.TSL16LFA = 1
• T1: FRS0.LFA/LMFA = 1
Serial signaling access
(LOOP.SPN=1 and LIM3.ESY=1):
• E1: Bit FRS1.TSL16LFA = 1
• T1: FRS0.LFA/LMFA = 1
The signal is cleared after an error-free
superframe. During alarm simulation this signal
gets active during simulation steps 2 and 6.
or a receive slip (positive or negative)
occurred
or FRS0.LOS=1
or a receive slip occurred
or FRS0.LOS=1
or a receive slip occurred
36
Pin Descriptions
FALC-LH V1.3
PEB 2255
2000-07