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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： 70/82頁
文件大?。?/td> 918K
代理商： W89C840AF
W89C840AF
-
70
-
Publication Release Date:October 2000
Revision 1.01
11
CSL
Carrier Sense Lost:
When set, it indicates that there is a carrier sense lost during transmission. This
bit is valid only when TLD (T01[30]) is set, i.e when the current descriptor is the
last descriptor of the current frame.
This bit is not valid in internal loopback mode.
10
NCS
No Carrier Sense:
When set, it indicates that no carrier sense is presented during transmitting. This
bit is valid only when TLD (T01[30]) is set, i.e when the current descriptor is the
last descriptor of the current frame.
This bit is not valid in internal loopback mode.
9
LC
Late Collision:
When set, it indicates that collision occurs after the 64 bytes collision window.
This bit is not valid if Transmit FIFO underflow bit(T00[1]) is set. This bit is
valid only when TLD (T01[30]) is set, i.e when the current descriptor is the last
descriptor of the current frame.
8
TA
Transmit Aborted:
When set, it indicates that the transmission was aborted after 16 successive
collisions during the transmission. This bit is valid only when TLD (T01[30]) is
set, i.e when the current descriptor is the last descriptor of the current frame.
7
SQE
Signal Quality Error Status:
When set, it indicates that W89C840AF has detected a signal quality error signal
in a range of time after the frame was transmitted if the W879C840 is set in 10
Mbps mode. This bit is not valid if Transmit FIFO underflow bit (T00[1]) is set.
This bit is valid only when TLD (T01[30]) is set, i.e when the current descriptor
is the last descriptor of the current frame.
6:3
CC
Collision Count:
The number of collisions occurred before the frame is transmitted. This bit is
valid only when TLD (T01[30]) is set, i.e when the current descriptor is the last
descriptor of the current frame.
1
TFU
Transmit FIFO Underflow.
This bit is set when the transmission process lacks data to transmit during frame
transmission. The transmit DMA state machine will enter in suspend state. This
bit is valid only when TLD (T01[30]) is set, i.e. when the current descriptor is
the last descriptor of the current frame.
0
DEF
Deferred:
When set, it indicates that the W89C840AF had to defer when ready to transmit
a frame because the carrier sense input was asserted before the W89C840AF gets
the grant to acquire the network media. This bit is valid only when TLD
(T01[30]) is set, i.e. when the current descriptor is the last descriptor of the
current frame.
T01, Transmit Descriptor 1
The T01 is used to describe the Transmit Control for the current frame transmission
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
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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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