- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄366551 > AM79C982-8JC (ADVANCED MICRO DEVICES INC) basic Integrated Multiport Repeater (bIMR) PDF資料下載
參數(shù)資料
| 型號(hào)： | AM79C982-8JC |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | basic Integrated Multiport Repeater (bIMR) |
| 中文描述： | DATACOM, ETHERNET TRANSCEIVER, PQCC84 |
| 封裝： | PLASTIC, LCC-84 |
| 文件頁數(shù)： | 26/26頁 |
| 文件大?。?/td> | 254K |
| 代理商： | AM79C982-8JC |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當(dāng)前第26頁
1–28 Am79C982
Glossary
APPENDIX B
Active Status
In a non-collision state, a bIMR chip is considered active
if it is receiving data on any one of its network ports, or is
in the process of broadcasting (repeating) FIFO data
from a recently completed data reception. In a collision
state (the bIMR device is generating Jam Sequence), an
bIMR device is considered active if any one or more net-
work ports is receiving data. The bIMR device asserts
the
REQ
line to indicate that it is active.
Collision
In a carrier sense multiple access/collision detection
(CSMA/CD) network such as Ethernet, only one node
can successfully transfer data at any one time. When
two or more separate nodes (DTEs or repeaters) are si-
multaneously transmitting data onto the network, a Col-
lision state exists. In a repeater using one or more bIMR
devices, a Collision state exists when more than one
network port is receiving data at any instant, or when
any one or more network ports receives data while the
bIMR device is transmitting (repeating) data, or when
the CI+/- pins become active (nominal 10 MHz signal)
on the AUI port.
Jam Sequence
A signal consisting of alternating 1s and 0s that is gener-
ated by the bIMR device when a Collision state is de-
tected. This signal is transmitted by the bIMR device to
indicate to the network that one or more network ports in
the repeater is involved in a collision.
Network Port
Any of the eight (four) 10BASE-T ports or the AUI port
present in the bIMR device (i.e. not the Expansion Port
or the Management Port).
Partitioning
A network port on a repeater has been partitioned if the
repeater has internally ‘disconnected’ it from the repeat-
er due to localized faults that would otherwise bring the
entire network down. These faults are generally cable
shorts and opens that tend to cause excessive collisions
at the network ports. The partitioned network port will be
internally re-connected if the network port starts behav-
ing correctly again, usually when successful ‘collision-
less’ transmissions and/or receptions resume.
Receive Collision
A network port is in a Receive Collision state when it de-
tects collision and is not one of the colliding network
’nodes’. This applies mainly to a non-transmitting AUI
port because a remote collision is clearly identified by
the presence of a nominal 10 MHz signal on the CI+/-
pins. However, any repeater port would be considered
to be in a receive collision state if the repeater unit is re-
ceiving data from that port as the ‘one-port-left’ in the
collision sequence.
Transmit Collision
A network port is in a Transmit Collision state when colli-
sion occurs while that port is transmitting. On the AUI
port, Transmit Collision is indicated by the presence of a
nominal 10 MHz signal on the CI+/- pins while the AUI
port is transmitting on the DO+/- pins. On a 10BASE-T
port, Transmit Collision occurs when incoming data ap-
pears on the RXD+/- pins while the 10BASE-T port is
transmitting on the TXD+/- and TXP+/- pins.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C983AKC | Integrated Multiport Repeater 2 (IMR2⑩) |
| AM79C984 | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984A | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AJC | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AKCW | Circular Connector; No. of Contacts:6; Series:MS27474; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:8; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:8-35 RoHS Compliant: No |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C983 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Am79C983 Datasheet? 348KB (PDF) Integrated Multiport Repeater 2 IMR2 ? |
| AM79C983A | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Integrated Multiport Repeater 2 (IMR2⑩) |
| AM79C983AKC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Integrated Multiport Repeater 2 (IMR2⑩) |
| AM79C983AKCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Integrated Multiport Repeater 2 (IMR2⑩) |
| AM79C983ASKC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Hub Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。