peb3456 Infineon Technologies Corporation, peb3456 Datasheet - Page 42

• Manufacturer Part Number: peb3456
• Description: Channelized T3 Termination With Ds3 Framer, M13 Multiplexer, T1/ E1 Framers And 256 Channel Hdlc/ppp Controller
• Manufacturer: Infineon Technologies Corporation

Data Sheet
Pin No.
A21
B21
D19
C19
B8
C8
D8
Symbol
RRED
RLOS
RLOF
RAIS
TOVHCK
TOVHD
TOVHEN
Output (O)
Input (I)
O
O
O
O
O
I
I
42
Function
Received RED
This signal is asserted whenever the DS3
receive framer is in RED alarm state.
Received LOS
This signal is asserted whenever the
received DS3 bit stream contained at
least 175 consecutive ‘0’s.
Receive LOF
This signal is asserted whenever the DS3
receive framer is in ’Loss of frame’ state.
Received AIS
This signal is asserted whenever the DS3
receive framer is in AIS state.
Transmit Overhead Bit Clock
This signal provides the bit clock for the
DS3 overhead bits of the outgoing DS3
frame. TOVHCK is nominally a 526 kHz
clock.
Transmit Overhead Data
The overhead bits of the outgoing DS3
frame can be provided via TOVHD.
Transmit overhead data is sampled on
the rising edge of TOVHCK and those bits
which are enabled by TOVHEN are
inserted in the overhead bit positions of
the DS3 frame.
Enable Transmit Overhead Data
The asserted TOVHEN signal marks the
bits to be inserted in the DS3 frame.
TOVHEN is sampled together with
TOVHD on the rising edge of TOVHD.
Pin Description
PEB 3456 E
05.2001