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參數(shù)資料
| 型號： | W89C840F |
| 英文描述： | LAN NODE CONTROLLER |
| 中文描述： | 網絡節(jié)點控制器 |
| 文件頁數(shù)： | 12/72頁 |
| 文件大?。?/td> | 731K |
| 代理商： | W89C840F |
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W89C840F
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The following figures describe the chain structures of receive descriptor.
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, all 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 |
|---|---|
| W89C880F | LAN Hub Controller |
| W89C840F | 100/10Mbps Ethernet Controller(100/10Mbps以太網控制器) |
| W89C92P | 10M CMOS Coaxial Transceiver |
| W89C940F | 10M PCI-Bus Ethernet Network Interface Controller |
| W91040 | |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| W89C92 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
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