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參數資料
| 型號： | W89C982 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | INTEGRATED MULTIPLE REPEATER II |
| 中文描述： | 集成的多中繼二 |
| 文件頁數： | 2/28頁 |
| 文件大小： | 277K |
| 代理商： | W89C982 |
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Preliminary W89C982AF
- 2 -
GENERAL DESCRIPTION
The Integrated Multiple Port Repeater II (IMPR II) implements the repeater functions specified by
section 9 of the IEEE 802.3 standard and twisted pair line transceiver functions conforming to the
10BASE-T standard. The IMPR II provides eight Twisted Pair (TP) Line Transceiver Ports and an
Attachment Unit Interface (AUI) port. Each Twisted Pair (TP) Line Transceiver Port can connect to an
Ethernet segment through a twisted pair line. The AUI port can connect to a thick Ethernet segment
by means of a 50-meter AUI cable. The IMPR II provides an AUI/TP port status direct report function,
which uses the ten port status pins and two select pins to indicate collisions, port link/activity,
partition, polarity, and network utilization. The inter-IMPR II interface includes signals for connecting
more than one IMPR II to increase the total number of hub ports. The manageable functions of the
repeater and twisted pair line transceiver in the IMPR II can be accessed through a serial interface.
FEATURES
Functions conform to IEEE 802.3 section 9 specifications
Single 5V power supply
CMOS process for lower power dissipation
Twisted-Pair (TP) line media interface compatible with 10 BASE-T specifications
Differential interface compatible with AUI specifications
Port status direct report function
Asynchronous Inter-IMPR II interface for large hub applications
Serial management interface allows for network management and makes port status information
accessible
AUI and TP port carrier sense signals observable through a port activity monitor port
Internal main state machine performs fragment extension, packet repetition, and collision handling
functions
Internal jabber lockup protection state machine monitors the length of each input packet to prevent
transmission of excessively large packets
Separate partition state machine for each TP port and AUI port can isolate ports when an excessive
number of collisions occur and reconnect them using certain algorithms
On-chip PLL, Manchester encoder/decoder, and FIFO
ORDERING INFORMATION
TYPE NO.
PACKAGE
W89C982AF
100-pin QFP
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