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DS31256DK Datasheet

  • DS31256DK

  • 256-Channel.High-Throughput HDLC Controller Demo Kit

  • 33頁

  • ETC

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DS31256DK Envoy
256-Channel, High-Throughput
HDLC Controller Demo Kit
www.maxim-ic.com
GENERAL DESCRIPTION
The DS31256 Envoy is a 256-channel HDLC
controller capable of handling up to 64 T1 or 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 Envoy 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 Envoy also
has three fast HDLC engines that only reside on
Ports 0, 1, and 2. They can operate at speeds up
to 52Mbps.
FEATURES
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256 Independent, Bidirectional HDLC
channels
Up to 132Mbps Full-Duplex Throughput
Supports Up to 64 T1 or 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)
APPLICATIONS
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
ORDERING INFORMATION
PART
DS31256
TEMP RANGE
0擄C to +70擄C
PIN-PACKAGE
256 PBGA
1 of 33
120302

DS31256DK 產(chǎn)品屬性

  • Maxim Integrated Products

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