參數(shù)資料
型號： W89C840F
英文描述： LAN NODE CONTROLLER
中文描述： 網(wǎng)絡(luò)節(jié)點控制器
文件頁數(shù)： 54/72頁
文件大?。?/td> 731K
代理商： W89C840F
W89C840F
- 54 -
C4C/CTDAR Current Transmit Descriptor Address Register
The C4C/CTDAR shows that the start address of the descriptor that W89C840F transmit DMA state
machine is used to process the current frame.
Bit
Attribute
Bit name
Description
31:0
R
CTDA
Current Transmit Descriptor Address.
The CTDA represents the start address of the current receive
descriptor that W89C840F‘s transmit DMA state machine is used
to process the transmit frame.
C50/CTBAR Current Transmit Buffer Address Register
The C50/CTBAR shows that the address of the system memory from which the W89C840F‘s
transmit DMA state machine will fetch the long word data and queue the data into the FIFO for
transmission.
Bit
Attribute
Bit name
Description
31:0
R
CTBA
Current Receive Buffer Address.
The CTBA contains the start address of the host memory from
which the W89C840F transmit DMA state machine will fetch the
long word data and queue it into the FIFO for transmission.
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