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參數(shù)資料
| 型號(hào)： | W89C840F |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 100/10Mbps Ethernet Controller(100/10Mbps以太網(wǎng)控制器) |
| 中文描述： | 1 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁(yè)數(shù)： | 7/72頁(yè) |
| 文件大?。?/td> | 731K |
| 代理商： | W89C840F |
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W89C840F
Publication Release Date:April 1997
Revision A1
- 7 -
TRDYB
IO/STS
Target Ready:
Asserted by the current target to indicate ability to
complete data transfer at the current data phase. When
W89C840F is operating at the bus slave mode
,
it asserts
TRDYB to indicate that the valid read data presents on
the bus or to indicate it is ready to accept data. Wait
states will be inserted if TRDYB deasserted. Data is
transferred at the rising edge of the PCI clock when
IRDYB and TRDYB are both asserted at the same time.
STOPB
IO/STS
PCI Stop:
Asserted by the current target to request master to stop
the current transaction.
IDSEL
I
PCI Initialization Device Select:
Asserted by host to signal the configuration access
request to W89C840F.
DEVSELB
IO/STS
PCI Device Select:
Asserted by the current target to indicate that it has
decoded its address as the current access target. When
W89C840F is the current master, it checks if the target
asserted this signal within 5 PCI clocks. If not,
W89C840F will abort the access operation. When
W89C840F is the target, it asserts DEVSELB in a
medium speed, i.e., within 2 clocks.
REQB
O/TS
PCI Request:
Asserted by W89C840F to request bus ownership.
REQB will be tri-stated when RSTB asserted.
GNTB
I/TS
PCI Grant:
Asserted by host to grant that W89C840F have got the
bus ownership. When RSTB asserted, W89C840F will
ignore GNTB.
PERRB
IO/STS
PCI Parity Error:
Asserted by the current data receiptor. When
W89C840F is the bus master, if a data parity error is
detected and the parity error response bit (FCS<6>) is
also set, it will set both bits of FCS<24> and C14<13>
as 1 to terminate the current transaction after the
current data phase is finished. When W89C840F is the
target, a data parity error is detected and the bit FCS<6>
is set, it will assert PERRB.
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相關(guān)代理商/技術(shù)參數(shù) |
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| W89C841D | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:3-IN - 1 10/100M FAST ETHERNET CONTROLLER |
| W89C841F | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:3-IN - 1 10/100M FAST ETHERNET CONTROLLER |
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| W89C880F | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LAN Hub Controller |
| W89C92 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
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