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參數資料
| 型號： | W89C840AF |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 100/10Mbps Ethernet Controller |
| 中文描述： | 1 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP128 |
| 封裝： | PLASTIC, QFP-128 |
| 文件頁數： | 16/82頁 |
| 文件大?。?/td> | 918K |
| 代理商： | W89C840AF |
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W89C840AF
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16
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Publication Release Date:October 2000
Revision 1.01
status register
structure constructing register
data buffer 1 pointer
next descriptor pointer
first descritpor of the RX descriptor
data buffer 1
status register
structure constructing register
data buffer 1 pointer
next descriptor pointer
second descritpor of the RX descriptor
status register
structure constructing register
data buffer 1 pointer
next descriptor pointer
third descritpor of the RX descriptor
status register
structure constructing register
data buffer 1 pointer
next descriptor pointer
last descritpor of the RX descriptor
for storing the first RX packet data
data buffer 1
for storing the 2nd RX packet data
data buffer 1
for storing the 3rd RX packet data
data buffer 1
for storing the nth RX packet data
As shown in the above diagram, descriptors are linked by pointers to construct a chain. The data can be
stored in more than one data buffers. In the last descriptor of the descriptor chain, the content of the R03 register
will be ignored by the receive DMA state machine if the RLINK bit of the R01 register in the last descriptor is set to
high. When the last descriptor has already been used, the next descriptor pointer in this one will link to the start
address of the first descriptor in the chain if it is available.
In the chain structure, the base address of the first descriptors is specified by the C0C/CRDLA register, the
receiving descriptors list address register and the base address of the next descriptor is pointed by the R03 of the
current descriptor.
The following figure describes the mixed mode list, composed of both the ring and the chain structures at the
same time.
相關PDF資料 |
PDF描述 |
|---|---|
| W89C841F | 3-IN - 1 10/100M FAST ETHERNET CONTROLLER |
| W89C880F | 100Base-Tx/T4 Multiport Repeater Controller(100Base-Tx/T4多端口中繼器控制器) |
| W89C92 | PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
| W89C926 | PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
| W89C926F | 10M PCMCIA Ethernet Network Interface Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W89C840F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN NODE CONTROLLER |
| W89C841D | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3-IN - 1 10/100M FAST ETHERNET CONTROLLER |
| W89C841F | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3-IN - 1 10/100M FAST ETHERNET CONTROLLER |
| W89C841F/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3-IN-1 100BASE-TX/FX & 10BASE-T Ethernet Controller |
| W89C880F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Hub Controller |
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