peb2035 ETC-unknow, peb2035 Datasheet - Page 10
peb2035
Manufacturer Part Number
peb2035
Description
Communications Advanced Cmos Frame Aligner
Manufacturer
ETC-unknow
Datasheet
1.PEB2035.pdf
(134 pages)
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1.3
P-LCC
Pin No.
5
Semiconductor Group
Pin Definitions and Functions (cont’d)
P-DIP
Pin No.
3
Symbol
DFPY /
FREEZS /
AINT
Input (I)
Output (O)
O
Function
PCM 30: Doubleframe Parity
Even parity signal which supplements the number
of ones of a received doubleframe to an even
quantity. The parity signal is sent out during the
following doubleframe (data changes 4 SCLK
cycles before the next doubleframe begins).
PCM 24: Freeze Signaling
Synchronization status signal which informs the
signaling processor that current signaling should
be frozen. It goes active if
– one or more framing bit errors are found in a
– loss of receiver synchronization, or
– a receive slip is detected.
It is cleared after an error-free superframe.
FREEZS will be inhibited by setting bit RC0.DFRZ.
During alarm simulation, this signal goes active
during simulation steps 2 and 6 if not disabled via
RCO.DFRZ.
Alarm Interrupt
Setting bit CCR.AINT switches the output to the
Alarm Interrupt function. It is triggered by any of
the alarm sources which are enabled via mask
bits. Acknowledging is done by writing a '1' to bit
LOOP.AIA.
10
superframe,
PEB 2035