參數(shù)資料
型號: MT90500
廠商: Mitel Networks Corporation
英文描述: Multi-Channel ATM AAL1 SAR(多通道 ATM AAL1分段及重組設(shè)備(基于通訊總線的系統(tǒng)與ATM網(wǎng)絡(luò)的接口))
中文描述: 多通道自動柜員機(jī)AAL1特區(qū)(多通道自動柜員機(jī)AAL1分段及重組設(shè)備(基于通訊總線的系統(tǒng)與空中交通管理網(wǎng)絡(luò)的接口))
文件頁數(shù): 137/159頁
文件大?。?/td> 514K
代理商: MT90500
MT90500
137
7.
Applications
7.1
Board Level Applications
Figure 62 shows a general board level application for the MT90500. This shows a high-level view of the device
connection to external memory, a CPU, an ATM Physical Layer device, an ATM AAL5 SAR device, and the TDM
backplane.This is a general application diagram; the most frequent variations would be: the number and size of
the SSRAM chips, the type of CPU or PHY, the mode of the TDM backplane and TDM local bus (several
possibilities are listed in the figure), and the presence or absence of a secondary SAR.
The size of external memory is selected to suit the application, and is tied to the number of TDM 64 kbps
channels to be used, the number of VCs to be used, and the Cell Delay Variation tolerance of the receive
channels. Similarly the CPU and PHY are chosen to suit the application. The TDM backplane mode (positive or
negative frame-pulse; fast or slow hold time; and 2.048, 4.096, or 8.192 Mbps) is application selectable, and
the local TDM bus can be enabled for applications which require it (e.g. when it is desirable to have a local
HDLC, or DSP, which is not tied to the backplane). The secondary SAR may be used in applications which
require ATM signalling, though it is possible to do a moderate amount of signalling using the TX and RX Data
FIFOs in the MT90500, provided that the CPU can perform the rest of the SAR functions in software.
Figure 62 - MT90500 Device Application Block Diagram
TDM Data, Clock
and Sync Lines
MVIP-90
H-MVIP
IDL
ST-BUS
SCSA
240-PQFP
Off-the-shelf
SAR Device
(AAL5)
Local Memory
Off-the-shelf
ATM PHY
Device
UTOPIA
Port
External
Synchronous
SRAM
CPU
16-bit CPU port for
internal register and
external memory pro-
gramming
Primary
UTOPIA
Port
Secondary
MT90500
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT90500AL 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Multi-Channel ATM AAL1 SAR
MT90500AL-ENG1 制造商:Mitel Networks Corporation 功能描述:
MT90502 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Multi-Channel AAL2 SAR
MT90502_06 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Multi-Channel AAL2 SAR
MT90502AG 制造商:Rochester Electronics LLC 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: