參數(shù)資料
型號(hào)： 84C30A
廠商： LSI Corporation
英文描述： 4-Port Ethernet Controller(四端口以太網(wǎng)控制器)
中文描述： 4端口以太網(wǎng)控制器（四端口以太網(wǎng)控制器）
文件頁(yè)數(shù)： 15/46頁(yè)
文件大?。?/td> 439K
代理商： 84C30A
4-Port 84C30A
4-15
MD400151/C
3.3.1 Preamble Processing
A port recognizes activity on the Ethernet via its Carrier
Sense line. The end of preamble is detected by a double
1 serial receive data pattern preceded by 6 bits of alternat-
ing 1’s and 0’s.
Detection of a double 0 pattern 16 bit times after CSN goes
high and before a proper Start Frame Delimiter pattern is
received, will prevent reception of the packet by the
receiver.
3.3.2 Address Matching
Ethernet addresses consist of two 6-byte fields. The first
bit of the address signifies whether it is a Station Address
or a Multicast/Broadcast Address.
First Bit
0
1
Address
Station Address (Physical)
Multicast/Broadcast Address
(logical)
Address matching occurs as follows:
Station Address:
All destination address bytes must
match the corresponding bytes found in the Station Ad-
dress Register. If Group Address mode s enabled, he ast
4 bits of he station address are masked out during address
matching.
Figure 3. Typical Application Example
TRANSMIT
RECEIVE
DATA
BUFFER
BUS
TRANSCEIVER
DMA/
BUFFER
CONTROL
CPU
SYSTEM
MEMORY
84C30A
4 CHANNEL
QUAD
84C24
4 CHANNEL
10BASE-T
相關(guān)PDF資料
PDF描述
850-10-016-10-001 PCB connectors 1.27 mm Single row / double row / triple row Solder tail
854-10-016-10-001 PCB connectors 1.27 mm Single row / double row / triple row Solder tail
852-10-016-10-001 PCB connectors 1.27 mm Single row / double row / triple row Solder tail
852-90-016-10-001 PCB connectors 1.27 mm Single row / double row / triple row Solder tail
852-90-016-10-002 PCB connectors 1.27 mm Single row / double row / triple row Solder tail
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
84C3A-A12-J06 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:83/84 - 5/8 Square 10-Turn
84C3A-A12-J06L 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:83/84 - 5/8 Square 10-Turn
84C3A-A12-J08L 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:83/84 - 5/8 Square 10-Turn
84C3A-A12-J10L 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:83/84 - 5/8 Square 10-Turn
84C3A-A12-K06 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:83/84 - 5/8 Square 10-Turn
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