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DS3125, DS31256, DS3127

Table of contents:
Info of DS3125
Info of DS31256
Info of DS3127

DS3125, DS31256, DS3127 Selling Leads, Datasheet

MFG:Maxim Integrated Products Category:Integrated Circuits (ICs) Package Cooled:SOP-16 D/C:08+

DS3125, DS31256, DS3127 Datasheet download

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Part Number: DS31256

Category: Integrated Circuits (ICs)

MFG: Maxim Integrated Products

Package Cooled: SOP-16

D/C: 08+

Description: IC CTRLR HDLC 256-CHANNEL 256BGA

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DS31256 Parameters

Technical/Catalog Information	DS31256
Vendor	Maxim Integrated Products
Category	Integrated Circuits (ICs)
Controller Type	HDLC Controller
Interface	Serial
Voltage - Supply	3 V ~ 3.6 V
Current - Supply	500mA
Package / Case	256-BGA
Packaging	Tube
Operating Temperature	0°C ~ 70°C
Drawing Number	*
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	DS31256 DS31256

DS31256 General Description

The DS31256 Envoy is a 256-channel HDLC controller that can handle up to 60 T1 or 64 E1 data streams or two T3 data streams. Each of the 16 physical ports can handle one, two, or four T1 or E1 data streams. The DS31256 is composed of the following blocks: Layer 1, HDLC processing, FIFO, DMA, PCI bus, and local bus.

There are 16 HDLC engines (one for each port) that are each capable of operating at speeds up to 8.192Mbps in channelized mode and up to 10Mbps in unchannelized mode. The DS31256 Envoy also has three fast HDLC engines that only reside on Ports 0, 1, and 2. They are capable of operating at speeds up to 52Mbps.

DS31256 Maximum Ratings

Voltage on Any Lead with Respect to V_SS (except V_DD) ...................-0.3V to 5.5V
Supply Voltage (V_DD) with Respect to V_SS ......................................-0.3V to 3.63V
Operating Temperature/Ambient Temperature Under Bias .............. 0 to +70
Junction Temperature Under Bias.............................................................. . -125
Storage Temperature Range ................................................. ......-55to +125
Soldering Temperature Range ..................... See IPC/JEDEC J-STD-020A Specification
ESD Tolerance (Note 1) .....................Class 2 (2000V4000V HBM: 1.5k, 100pF)

DS31256 Features

256 Independent, Bidirectional HDLC Channels
Up to 132Mbps Full-Duplex Throughput
Supports Up to 60 T1 or 64 E1 Data Streams
16 Physical Ports (16 Tx and 16 Rx) That Can Be Independently Configured for Channelized or Unchannelized Operation
Three Fast (52Mbps) Ports; Other Ports Capable of Speeds Up to 10Mbps (Unchannelized)
Channelized Ports Can Each Handle One, Two, or Four T1 or E1 Lines
Per-Channel DS0 Loopbacks in Both Directions
Over-Subscription at the Port Level
Transparent Mode Supported
On-Board Bit Error-Rate Tester (BERT) with Automatic Error Insertion Capability
BERT Function Can Be Assigned to Any HDLC Channel or Any Port
Large 16kB FIFO in Both Receive and Transmit Directions
Efficient Scatter/Gather DMA Maximizes Memory Efficiency
Receive Data Packets are Time-Stamped
Transmit Packet Priority Setting
V.54 Loopback Code Detector
Local Bus Allows for PCI Bridging or Local Access
Intel or Motorola Bus Signals Supported
Backward Compatibility with DS3134
33MHz 32-Bit PCI (V2.1) Interface
3.3V Low-Power CMOS with 5V Tolerant I/O
JTAG Support IEEE 1149.1
256-Pin Plastic BGA (27mm x 27mm)

DS31256 Typical Application

Channelized and Clear-Channel (Unchannelized) T1/E1 and T3/E3 Routers with Multilink PPP Support High-Density Frame-Relay Access xDSL Access Multiplexers (DSLAMs) Triple HSSI High-Density V.35 SONET/SDH EOC/ECC Termination

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