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MT90880B

Features: • WAN interface, consisting of 32 input and output streams at 2.048 or 8.192 Mbs• Up to 1024 bi-directional 64 Kbs channels• N * 64 Kbs trunking of channels across any stream and channel• 1 K by 1 K non-blocking TDM switch• Local TDM interface, with 32 strea...

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SeekIC No. : 004430244 Detail

MT90880B: Features: • WAN interface, consisting of 32 input and output streams at 2.048 or 8.192 Mbs• Up to 1024 bi-directional 64 Kbs channels• N * 64 Kbs trunking of channels across any st...

MT90880B Data Sheet

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Part Number:
MT90880B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/26

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Product Details

Description



Features:

• WAN interface, consisting of 32 input and output streams at 2.048 or 8.192 Mbs
• Up to 1024 bi-directional 64 Kbs channels
• N * 64 Kbs trunking of channels across any stream and channel
• 1 K by 1 K non-blocking TDM switch
• Local TDM interface, with 32 streams at 2.048, 4.096 and 8.192 Mbs
• Flexible, multi-protocol packet encapsulation
• Dual 100 Mbs MII interfaces for redundancy or for load balancing
• Quality of service features, including weighted fair queuing, strict priority and queue size limit thresholds
• High performance 33 MHz / 66 MHz 32 bit PCI bus
• Integral Stratum 4E PLL for synchronisation to the TDM domain
• Power consumption of less than 0.75 W


Application

• Packet backplane interconnection
• Circuit Emulation over packet domain
• Internet Off-load
• Remote Access Concentrators
• H.100/H.110 extension and expansion


Specifications

Parameter Symbol Min. Max. Units
I/O Supply Voltage VDD_IO -0.5 5.0 V
Core Supply Voltage VDD_CORE -0.5 2.5 V
PLL Supply Voltage VDD_PLL -0.5 2.5 V
Input Voltage VI -0.5 VDD + 0.5 V
Input Voltage (5 V tolerant inputs) VI_5 V -0.5 7.0 V
Continuous current at digital inputs IIN - ±10 mA
Continuous current at digital outputs IO - ±15 mA
Package power dissipation PD - 4 W
Storage Temperature TS -55 +125

Note: Exceeding these figures may cause permanent damage. Functional operation under these conditions is not guaranteed.


Description

The MT90880B is a family of highly functional TDM to Packet bridging devices. It provides a bridge between a WAN environment based on constant bit rate TDM streams and a packet domain based on Ethernet technology.

It is capable of assembling user-defined packets of TDM traffic from the WAN Access Interface and transmitting them from the Ethernet interfaces using a variety of protocols. If external processing of MT90880B is required (e.g., HDLC or modem termination) the traffic can be switched to a local interface using the internal TDM switch.

 Packets of MT90880B received from the Ethernet interfaces are parsed to determine the egress destination, and are appropriately queued either to the WAN Access Interface or to the PCI interface. An integrated DMA controller is used to transfer packets to and from the PCI interface with a minimum of CPU intervention.




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