參數(shù)資料
型號(hào)： MB86965A
元件分類(lèi)： 微控制器/微處理器
英文描述： 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP16
封裝： PLASTIC, QFP-160
文件頁(yè)數(shù)： 44/76頁(yè)
文件大?。?/td> 394K
代理商： MB86965A
MB86965
49
Figure 16. Loopback Operation
The host system activates the Transmitter by writing the
packet count to TX PKT CNT register, BMPR10<6:0>
and by writing one to the TX START bit, after which the
Transmitter transmits each packet in the buffer in the
order in which they were loaded. If a collision occurs, the
Transmitter automatically retransmits the packet until
successful or until 16 consecutive attempts have ended in
collision. In the latter case, depending on the mode
selection made at initialization time, the Transmitter
continues to try to transmit the same packet starting again
with a collision count of zero, or skips the current packet
and tries to transmit the next packet starting with a
collision count of zero, or halts and waits for instruction
from the host. In the last case, the host terminates by
setting DLC EN, DLCR6<7> to one, or continues to
attempt to transmit the same packet (collision counter
reset), or skips the current packet and tries to transmit the
next packet (collision count is zero).
COLLISION SIGNAL PROCESSING
As collisions are detected on the network media, a
10-megahertz signal is generated on collision differential
inputs, CIP and CIN. When EtherCoupler detects this
signal, it asserts the internal collision line. The CIP and
CIN differential
driver
inputs require termination
similar to that for the DIP and DIN inputs, i.e., 39
resistors tied to ground through 0.1-microFarad capaci-
tors.
LOOPBACK
As shown in Figure 16, loopback allows EtherCoupler
testing without sending signals onto the LAN media. The
loopback function is invoked by clearing LBC bit
DLCR4<1>. Data is routed from the Transmit Buffer
through a FIFO to the Transmit section of the data link
controller, through the internal Manchester encoder, back
through the Manchester decoder, through the Receiver
section of the data link controller, and is then stored in a
Receive Buffer. Software can then read and check the
received packet that has traveled through the EtherCoup-
ler Transmit and Receive sections. The Manchester
encoder/decoder responds to assertion of the LBC input
by internally looping the transmitter output to the receiver
input, and blocks the transmit data from appearing at the
network output pin.
相關(guān)PDF資料
PDF描述
MB88151APNF-G-500-JNE1 OTHER CLOCK GENERATOR, PDSO8
MB88151APNF-G-401-JNEFE1 OTHER CLOCK GENERATOR, PDSO8
MB88151APNF-G-801-JNERE1 OTHER CLOCK GENERATOR, PDSO8
MB88151APNF-G-400-JNERE1 OTHER CLOCK GENERATOR, PDSO8
MB88151APNF-G-200-JNEFE1 OTHER CLOCK GENERATOR, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB86965B 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:EtherCoupler ETHERNET CONTROLLER WITH 10BASE?T TRANSCEIVER
MB86965BPF-G-BND 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:EtherCoupler ETHERNET CONTROLLER WITH 10BASE?T TRANSCEIVER
MB86967 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces
MB86967PFV 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces
MB86977 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:IP PACKET FORWARDING ENGINE
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*