- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361795 > W89C840F LAN NODE CONTROLLER PDF資料下載
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)： | 51/72頁 |
| 文件大小： | 731K |
| 代理商： | W89C840F |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁當前第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁
W89C840F
Publication Release Date:April 1997
Revision A1
- 51 -
15:0
R/W
TIME
General Timer:
The bi t
field TIME shows the content of the general timer inside
the W89C840F . The internal general timer count
s
down from the
pre-set value, a non zero value, programmed by the driver
automatically once the write transaction to the register C20/CGTR
is completed. The time unit for the internal general timer count
down is approximately 2048 times the cycle duration of the MII
TXCLK. For instance, the count down time unit for a 25 Mhz MII
TXCLK is approximately 82 us.
The C14/CISR bit 11
i s
set when TIME of C2C/CGTR reach zero.
The TIME is default 0000H.
C30/CRDAR Current Receive Descriptor Address Register
The register C30/CRDAR shows that the start address of the receive descriptor that is used by the
W89C840F receive DMA state machine to process the current receive frame.
Bit
Attribute
Bit name
Description
31:0
R
CRDA
Current Receive Descriptor Address.
The CRDA represents the start address of the current receive
descriptor that the W89C840F‘s receive DMA state machine is
used to process the received frame.
C34/CRBAR Current Receive Buffer Address Register
The register C34/CRBAR shows that the start address of the host memory used by the W89C840F
receive DMA state machine to store the current aligned long word data of the current received frame.
Bit
Attribute
Bit name
Description
31:0
R
CRBA
Current Receive Buffer Address.
The CRBA contains the pointer current address in the on-using
buffer of the host memory used by the W89C840F receive DMA
state machine to store the current aligned long word data of the
current received frame.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W89C880F | LAN Hub Controller |
| W89C840F | 100/10Mbps Ethernet Controller(100/10Mbps以太網(wǎng)控制器) |
| W89C92P | 10M CMOS Coaxial Transceiver |
| W89C940F | 10M PCI-Bus Ethernet Network Interface Controller |
| W91040 | |
相關(guān)代理商/技術(shù)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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。