參數(shù)資料
型號(hào)： AX88141
廠商： ASIX Electronics Corporation
英文描述： 100BASE-TX/FX PCI BUS FAST ETHERNET MAC CONTROLLER WITH POWER MANAGEMENT
中文描述： 100BASE-TX/FX PCI總線的快速以太網(wǎng)MAC控制器電源管理
文件頁(yè)數(shù)： 31/43頁(yè)
文件大小： 308K
代理商： AX88141
AX88141 PRELIMINARY
ASIX ELECTRONICS CORPORATION
31
CONFIDENTIAL
5.3 Transmit Descriptors
Providing one buffer, one byte-count buffer, and two address pointers in each descriptor .
Transmit Descriptor Format
31 0
O
W
N
TDES0
Status
TDES1
Control bi ts
Byte Count Buffer 2
Byte Count Buffer 1
TDES2
Buffer Address 1
TDES3
Buffer Address 2
Fig - 5 Transmit Descriptor Format
5.3.1 Transmit Descriptor 0 (TDES0)
TDES0 contains transmitted frame status and descriptor ownership information.
Field
31
OWN - Own Bit
Description
Indicates that the descriptor is owned by the AX88141.
1
0
Indicates that the descriptor is owned by the host.
30:16
15
Reserved.--Written as “0” for future compatibility concern.
ES - Error Summary
Indicates the logical OR of the following bits :
TDES0<1>
TDES0<8>
TDES0<9>
TDES0<10>
TDES0<11>
TDES0<14>
TO - Transmit Jabber Time-out : Active high.
The transmission process is aborted and placed in the STOPPED state.
When TDES0<14> is set any heartbeat fail indication (TDES0<7>) is not valid.
Reserved.--Written as “0” for future compatibility concern.
LO - Loss of Carrier during transmission. Active high. (The status is no meaning except 10BASE SRL mode)
Not valid in internal loop-back mode (REG6<11:10>=01).
NC - No Carrier. Indicates that the carrier signal from the transceiver was not present during transmission. Active high.
Not valid in internal loop-back mode (REG6<11:10>=01).
LC - Late Collision. When set, indicates that the frame transmission was aborted due to collision occurring after the collision
window of 64 bytes. Not valid if under-flow error (TDES0<1>) is set.
EC - Excessive Collision When set, indicates that the transmission was aborted after 16 successive collisions while attempting to
transmit the current frame.
HF - Heartbeat Fail
This bit is effective only in 10Mb/s operation mode. When set, indicates a heartbeat collision check failure
This bit is not valid if under-flow error (TDES0<1>) is set.
On the second transmission attempt, after the first transmission was aborted due to collision, the AX88141 does not check
heartbeat fail and (TDES0<7>) is reset.
CC - Collision Count
This 4-bit counter indicates the number of collisions that occurred before the frame was transmitted.
Not valid when the excessive collisions bit (TDES0<8>) is also set.
Reserved.--Written as “0” for future compatibility concern.
under-flow error
successive collisions
late collision
no carrier
loss of carrier
transmit jabber time-out
14
13:12
11
10
9
8
7
6:3
2
相關(guān)PDF資料
PDF描述
AX88170L USB to Fast Ethernet/HomePNA Controller
AX88172A USB 2.0 to 10/100M Fast Ethernet Controller
AX88172ATF USB 2.0 to 10/100M Fast Ethernet Controller
AX88772A USB 2.0 to 10/100M Fast Ethernet Controller
AX88772ALF USB 2.0 to 10/100M Fast Ethernet Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AX88170L 制造商:ASIX 制造商全稱:ASIX 功能描述:USB to Fast Ethernet/HomePNA Controller
AX88172 制造商:ASI 制造商全稱:ASI 功能描述:USB2.0 TO ETHERNET Device setup guide
AX88172A 制造商:ASIX 制造商全稱:ASIX 功能描述:USB 2.0 to 10/100M Fast Ethernet Controller
AX88172ATF 制造商:ASIX 制造商全稱:ASIX 功能描述:USB 2.0 to 10/100M Fast Ethernet Controller
AX88172L 制造商:ASIX 制造商全稱:ASIX 功能描述:USB to Fast Ethernet/HomePNA Controller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*