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參數(shù)資料
| 型號： | AD6816 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Interface For ATM User-Network Interface IC to Category #5 Unshielded Twisted Pair (UTP) system or a fiber optic system.(ATM用戶網(wǎng)絡接口與#5類非屏蔽雙絞線系統(tǒng)或其他光纖系統(tǒng)的接口芯片) |
| 文件頁數(shù)： | 15/20頁 |
| 文件大小： | 483K |
| 代理商： | AD6816 |
AD6816
–15–
REV. A
block. The PMD interface block provides the digital baseband
communication between ATM user devices and ATM network
equipment. The TC block interfaces with the PHY layer aspects
that are independent of the transmission medium characteris-
tics.
The PMD blocks for these applications use the AD6816 which
provides the UTP#5 line interface (Tx: Line Driver, Rx: Equal-
izer & Baseline Restoration) and provides an interface to the TC
Layer (Tx: 155 MHz Transmit Clock, Rx: 155 MHz Recovered
Clock and 155 Mbps Retimed Data).
The TC block for these applications use the IgT WAC-013
(single channel) or the IgT WAC-413 (four channel). These
devices process and generate ATM cells over SONET/ SDH
frames.
I
T
*
WAC-013
155Mbps
SONET ATM UNI
PROCESSOR
LOCAL BUS
R
UTOPIA
T
UTOPIA
TRANSMISSION
CONVERGENCE
(TC) BLOCK
AD6816
155Mbps UTP#5
INTERFACE
PHYSICAL MEDIUM
DEPENDENT (PMD)
INTERFACE BLOCK
TRANSFORMER
AND
FILTER
UTP#5
CONNECTOR
*
NOTE: MANUFACTURER'S DATA SHEET IS SUBJECT TO CHANGE.
CONFIRM SPECIFICATIONS BEFORE USING THIS DEVICE.
Figure 26. Single Channel ATM PHY Block Diagram (AD6816 with IgT WAC-013)
I
T*
WAC-413
155Mbps
SONET ATM UNI
PROCESSOR
LOCAL
BUS
RX
UTOPIA
TX
UTOPIA
TRANSMISSION
CONVERGENCE
(TC) BLOCK
AD6816
155Mbps UTP#5
INTERFACE
TRANSFORMER
AND
FILTER
UTP#5
CONNECTOR
PHYSICAL MEDIUM
DEPENDENT (PMD)
INTERFACE BLOCK
*NOTE: MANUFACTURER'S DATA SHEET IS SUBJECT TO CHANGE.
CONFIRM SPECIFICATIONS BEFORE USING THIS DEVICE.
AD6816
155Mbps UTP#5
INTERFACE
AD6816
155Mbps UTP#5
INTERFACE
TRANSFORMER
AND
FILTER
TRANSFORMER
AND
FILTER
TRANSFORMER
AND
FILTER
UTP#5
CONNECTOR
UTP#5
CONNECTOR
UTP#5
CONNECTOR
AD6816
155Mbps UTP#5
INTERFACE
Figure 27. Four Channel ATM PHY Block Diagram (AD6816 with IgT WAC-413)
Using the AD6816 to Interface ATM to Optical and Electrical
Media: Examples
Example 1: ATM UNI PHY Layer(s) Using AD6816 & IgT
WAC-013 (or IgT WAC-413)
The following system implementation examples show how to
implement a 155 Mbps ATM User Network Interface (UNI) to
Category #5 Unshielded Twisted Pair cable (UTP#5) using the
AD6816 and either the IgT WAC-013 ATM UNI Processor
(single channel) or the IgT WAC-413 Quad ATM UNI Proces-
sor (four channels). Contact Integrated Telecom Technology
(IgT), Gaithersburg, MD, US, (301)990-9890, for information
on the WAC-013 or WAC-413 devices beyond that provided
below.
Figures 26 and 27 show generic block diagrams of the single
channel and four channel ATM PHY interface circuit. The
ATM PHY interface circuit is made up of a Physical Medium
Dependent (PMD) block and a Transmission Convergence (TC)
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