ASAHI KASEI [AK2504A]
MS0143-E-01 - 1 - 2004/01
AK2504A
DS3/STS-1/E3 Transceiver

GENERAL DESCRIPTION
The AK2504A is a DSP based line transceiver. It
provides the analog transmit/receive line interface
functions for DS3(44.736MHz) /STS-1(51.84MHz)
or E3(34.368MHz) interface.
Transmitter includes on-chip pulse shaper, B3ZS/
HDB3 Encoder. Pulse level adjustment function is
very useful to put a pulse into pulse mask for any
customer’s system.
Receiver includes root-f equalizer, automatic-gain
control, clock and data recovery, B3ZS/HDB3
Decoder, Loss-Of-Signal and Loss-Of-Lock alarm
function.
Local and Remote Loop-back function is included
for system level trouble shooting.
The device operates at a single +3.3 Volt supply
and is transparent to the framing format.


PACKAGE
- 64 pin LQFP


FEATURE
- “Robust” DSP based line transceiver
- Provides Complete Analog Line Transmitter
and Receiver function for DS3, STS-1 and E3
Applications
- Transmit Pulse Level Adjustment
- Provides Line Equalization, and Clock and
Data Recovery Functions
- Compliance with Bellcore GR-499-CORE and
GR-253-CORE, ANSI T1.102, T1.404,
- Compliance with ITU-T G.703 and G.823
- Local/Remote Loopback functions
- B3ZS/HDB3 Encoder/Decoder
- Low voltage supply : +3.3V



APPLICATIONS
- Interfacing network transmission equipment
such as SONET multiplexor and M13 to a
DSX-3 cross connect.
- Interfacing E3 network transmission
equipment.
- Interfacing customer premises equipment to a
line.