DS26401
www.maxim-ic.com
GENERAL DESCRIPTION
FEATURES
Cꢀ 8 Independent, Full-Featured T1/E1/J1
The DS26401 is an octal, software-selectable T1, E1
or J1 framer. It is composed of eight framer/formatters
and a system (backplane) interface. Each framer has
an HDLC controller that can be mapped to any DS0
or FDL (T1)/Sa (E1) bit. The DS26401 also includes a
full-feature BERT device, which can be used with any
of the eight T1/E1 ports, and an internal clock adapter
useful for creating synchronous, high frequency
backplane timing. The DS26401 is controlled through
an 8-bit parallel port that can be configured for
nonmultiplexed Intel or Motorola operation.
Framers/Formatters
Cꢀ Independent Transmit and Receive Paths
Cꢀ Flexible Signaling Extraction and Insertion
Cꢀ Alarm Detection and Insertion
Cꢀ Transmit Synchronizer
Cꢀ AMI, B8ZS, HDB3, NRZ Line Coding
Cꢀ Performance Monitor Counters
Cꢀ BOC Message Controller (T1)
Cꢀ Two-Frame Elastic Store Buffers for Each
Transmitter and Receiver
APPLICATIONS
Cꢀ One HDLC Controller per Framer
Cꢀ RAI-CI and AIS-CI Support
Cꢀ Full-Feature BERT can be Mapped to Any Port
Line Cards
Routers
IMA
Add-Drop Multiplexers
DSLAMs
ATM
Cꢀ Flexible TDM Backplane Supports Bus Rates
from 1.544MHz to 16.384MHz
Timing Systems
PBXs
WAN Interface
Cꢀ Internal Clock Generator (CLAD) Supplies
Customer-Premise
Equipment
16.384MHz, 8.192MHz, 4.096MHz, or 2.048MHz
Switches
Cꢀ JTAG Test Port
Cꢀ Single 3.3V Supply with 5V Tolerant Inputs
Cꢀ 17mm x 17mm, 256-Pin BGA (1.00mm Pitch)
Central Office Equipment
Go to www.maxim-ic.com/telecom for a complete list of
Telecommunications data sheets, evaluation kits, application
notes, and software downloads.
ORDERING INFORMATION
PART
DS26401
DS26401N
TEMP RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
256 BGA
256 BGA
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
1
REV: 072403