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參數(shù)資料
| 型號： | L64381 |
| 廠商： | LSI Corporation |
| 英文描述： | 4-Port Ethernet Controller(四端口以太網(wǎng)控制器) |
| 中文描述： | 4端口以太網(wǎng)控制器（四端口以太網(wǎng)控制器） |
| 文件頁數(shù)： | 65/109頁 |
| 文件大?。?/td> | 815K |
| 代理商： | L64381 |
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Bus Interface
4-9
is deasserted before the Bus Transfer Size amount of data has been
transferred (and this is not an end of packet), then the state machine
assumes that the external arbitration wanted to preempt this transfer, and
3-states the DATA[31:0], BYTE_VALID[3:0], SOP, and EOP signals.
When the next transfer from this FIFO is to be initiated, the state machine
starts fetching data from the FIFO location following the one that was last
transferred in the previous access. If the L64381 detects the assertion of
the ABORT_IN signal while a bus transfer is in progress, then it stops
the current transfer and resets the Receive FIFO head pointer to the
value it contained just before the transfer was started. After the asserted
ABORT_IN signal is latched by the L64381, if the READ_OUT_PKT is
still asserted, the L64381 drives idle data (zeros) on the DATA[31:0] out-
puts and ones on the BYTE_VALID[3:0], SOP, and EOP outputs through-
out the current cycle. To abort a read transfer, ABORT_IN should be
asserted so that it is latched at one of the clock edges in which the
L64381 puts data on the data bus. ABORT_IN needs to be asserted for
one cycle only, and it is ignored if asserted after EOP.
Figure 4.6 shows a read transfer that is aborted by asserting ABORT_IN.
It also shows the window in which ABORT_IN should be asserted.
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參數(shù)描述 |
|---|---|
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| L643F | 制造商:CRYDOM 制造商全稱:Crydom Inc., 功能描述:Power Modules |
| L-643GD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.37 x 4.88 x 8.6mm TOMBSTONE TYPE LED LAMP |
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