peb3456 Infineon Technologies Corporation, peb3456 Datasheet - Page 43

• 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.
A8
D9
A7
B9
C9
C10
Symbol
TOVHSYN
TSBCK
TSBD
ROVHCK
ROVHD
ROVHSYN
Output (O)
Input (I)
I/O
O
O
O
O
I
43
Function
Transmit Overhead Synchronization
TOVHSYN provides the means to align
TOVHD to the first M-frame of the DS3
signal. If operated in output mode
TOVHSYN it is asserted when the X-bit of
the 1
has to be inserted via TOVHD. TOVHSYN
is updated on the rising edge of TOVHCK.
If operated in input mode TOVHSYN must
be asserted together with the X-bit of the
1
input on TOVHD. TOVHSYN is sampled
on the rising edge of TOVHCK.
Transmit Stuff Bit Clock
This signal provides the bit clock for DS3
stuff bit data. Transmit stuff bit data is
sampled on the rising edge of TSBCK.
Transmit Stuff Bit Data
Data provided via TSBD is optionally
inserted in the stuffed bit positions of the
DS3 signal. TSBD is sampled on the
rising edge of TSBD. This function is
available in M13 asynchronous format
only.
Receive Overhead Bit Clock
This signal provides the bit clock for the
received DS3 overhead bits. ROVHCK is
nominally a 526 kHz clock.
Receive Overhead Data
ROVHD contains the extracted overhead
bits of the DS3 frame. It is updated on the
rising edge of ROVHCK.
Receive Overhead Synchronization
ROVHSYN is asserted while the X-bit of
the 1
is provided via ROVHD. It is sampled on
the rising edge of ROVHCK.
st
subframe of the DS3 signal which is
st
st
subframe of the DS3 overhead bits
subframe of the DS3 overhead bits
Pin Description
PEB 3456 E
05.2001