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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 32/43頁 |
| 文件大?。?/td> | 308K |
| 代理商： | AX88141 |
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AX88141 PRELIMINARY
ASIX ELECTRONICS CORPORATION
32
CONFIDENTIAL
1
UF - Under-flow Error
When set, indicates that the transmitter aborted the message because data arrived late from memory. Under-flow error indicates
that the AX88141 encountered an empty transmit FIFO while transmitting a frame. The transmission process enters the
suspended state and sets both transmit under-flow (REG5<0>) and transmit interrupt (REG5<0>).
DE - Deferred
When set, indicates that the AX88141 had to defer while ready to transmit a frame because the carrier was asserted.
0
Tab - 42 Transmit Descriptor 0
5.3.2 Transmit Descriptor 1 (TDES1)
Field
31
IC - Interrupt on Completion
When set, the AX88141 sets transmit interrupt (REG5<0>) after the present frames has been transmitted. It is valid only when
first segment (TDES1<30>) is set.
1
30
LS - Last Segment
Description
Indicates that the buffer contains the last segment of a frame.
0
Indicates that the buffer contains the first or middle segment of a frame.
1
Indicates that the buffer contains the first segment of a frame.
29
FS - First Segment
0
Indicates that the buffer contains the middle or last segment of a frame.
28:27
26
Reserved.--Written as “0” for future compatibility concern.
AC - Add CRC Disable
When set, the AX88141 does not append the CRC to the end of the transmitted frame. This field is valid only when first segment
(TDES1<29>) is set.
Reserved.--Written as “0” for future compatibility concern.
1
the AX88141 does not automatically add a padding field, so a packet
shorter than 64 bytes.
The CRC field is added despite the state of
the add CRC disable (TDES1<26>) flag.
25:24
23
DPD - Disabled Padding
0
The AX88141 automatically adds a padding field and also a CRC field to a
packet shorter than 64 bytes.
22:11
10:0
Reserved.--Written as “0” for future compatibility concern.
Data Buffer Size
Indicates the size, in bytes, of the data buffer. If this field is 0, the AX88141 ignores this buffer.
Tab - 43 Transmit Descriptor 1
5.3.3 Transmit Descriptor 2 (TDES2)
Field
31:0
Data Buffer Pointer
Physical address of data buffer. There are no limitations on the buffer address alignment.
Description
Tab - 44 Transmit Descriptor 2
5.3.4 Transmit Descriptor 3 (TDES3)
Field
31:0
Address Pointer
Physical address of next descriptor address. There are no limitation on the buffer address alignment.
Description
Tab - 45 Transmit Descriptor 3
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PDF描述 |
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| 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 |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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 |
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