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| 型號(hào)： | LAN91C100-FD-SS |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | FEAST Fast Ethernet Controller with Full Duplex Capability |
| 中文描述： | 2 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP208 |
| 封裝： | GREEN, QFP-208 |
| 文件頁(yè)數(shù)： | 30/67頁(yè) |
| 文件大?。?/td> | 369K |
| 代理商： | LAN91C100-FD-SS |
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SMSC DS – LAN91C100FD REV. B
Page 30
Rev. 01-20-06
BANK 2
OFFSET
4
NAME
TYPE
SYMBOL
FIFO
FIFO PORTS REGISTER
READ ONLY
This register provides access to the read ports of the Receive FIFO and the Transmit completion FIFO. The packet
numbers to be processed by the interrupt service routines are read from this register.
HIGH
BYTE
REMPTY
0
RX FIFO PACKET NUMBER
1
0
0
0
0
0
0
0
LOW
BYTE
TEMPTY
0
TX DONE PACKET NUMBER
1
0
0
0
0
0
0
0
REMPTY - No receive packets queued in the RX FIFO. For polling purposes, uses the RCV_INT bit in the Interrupt Status
Register.
TOP OF RX FIFO PACKET NUMBER - Packet number presently at the output of the RX FIFO. Only valid if REMPTY is
clear. The packet is removed from the RX FIFO using MMU Commands 3) or 4).
TEMPTY - No transmit packets in completion queue. For polling purposes, uses the TX_INT bit in the Interrupt Status
Register.
TX DONE PACKET NUMBER - Packet number presently at the output of the TX Completion FIFO. Only valid if TEMPTY
is clear. The packet is removed when a TX INT acknowledge is issued.
Note:
For software compatibility with future versions, the value read from each FIFO register is intended to be written into
the PNR as is, without masking higher bits (provided TEMPTY and REMPTY = 0 respectively).
BANK 2
OFFSET
NAME
6
POINTER REGISTER
TYPE
SYMBOL
PTR
READ/WRITE
NOT EMPTY is a read
only bit
HIGH
BYTE
RCV
AUTO
INCR.
READ
ETEN
NOT
EMPTY
POINTER HIGH
0
0
0
0
0
0
0
0
LOW
BYTE
POINTER LOW
0
0
0
0
0
0
0
0
POINTER REGISTER - The value of this register determines the address to be accessed within the transmit or receive
areas. It will auto-increment on accesses to the data register when AUTO INCR. is set. The increment is by one for every
byte access, by two for every word access, and by four for every double word access. When RCV is set the address refers
to the receive area and uses the output of RX FIFO as the packet number, when RCV is clear the address refers to the
transmit area and uses the packet number at the Packet Number Register.
READ - Determines the type of access to follow. If the READ bit is high the operation intended is a read. If the READ bit is
low the operation is a write. Loading a new pointer value, with the READ bit high, generates a pre-fetch into the Data
Register for read purposes.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LAN91C100FD-SS | 功能描述:以太網(wǎng) IC Non-PCI 10/100 Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN91C100-FD-ST | 制造商:SMSC 制造商全稱:SMSC 功能描述:FEAST Fast Ethernet Controller with Full Duplex Capability |
| LAN91C100FD-ST | 功能描述:以太網(wǎng) IC Non-PCI 10/100 Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN91C100FDTQFP | 功能描述:以太網(wǎng) IC Non-PCI 10/100 Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN91C100QFP | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:SMSC 功能描述: |
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