參數(shù)資料
型號(hào)： 91C100FDREVB
廠(chǎng)商： SMSC Corporation
英文描述： FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY
中文描述： 宴快速以太網(wǎng)控制器以全雙工能力
文件頁(yè)數(shù)： 24/68頁(yè)
文件大?。?/td> 423K
代理商： 91C100FDREVB
SMSC DS – LAN91C100FD REV. B
Page 30
Rev. 05/31/2000
BANK 2
OFFSET
NAME
TYPE
SYMBOL
4
FIFO PORTS REGISTER
READ ONLY
FIFO
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
LOW
BYTE
TEMPTY
0
TX DONE PACKET NUMBER
1
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
TYPE
SYMBOL
6
POINTER REGISTER
READ/WRITE
NOT EMPTY is a read
only bit
PTR
HIGH
BYTE
RCV
AUTO
INCR.
READ
ETEN
NOT
EMPTY
POINTER HIGH
0
LOW
BYTE
POINTER LOW
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.
相關(guān)PDF資料
PDF描述
91C94 ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM
92_TNC-50-0-4/111_NE BOARD TERMINATED, FEMALE, TNC CONNECTOR, SURFACE MOUNT, JACK
92_TNC-50-0-4/111_NM BOARD TERMINATED, FEMALE, TNC CONNECTOR, SURFACE MOUNT, JACK
92082-314 14 CONTACT(S), FEMALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
92082-316 16 CONTACT(S), FEMALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
91C100GTQFP 制造商:Rochester Electronics LLC 功能描述:- Bulk
91C100QFP 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:SMSC 功能描述:
91C15JC353 制造商:STM 功能描述:CGB015X335C
91C1A-A24-A13/A15 制造商:BOURNS 制造商全稱(chēng):Bourns Electronic Solutions 功能描述:91, 92, 93, 94, 95, 96 - 5/8 ” Square Single-Turn Panel Control 97, 99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
91C1A-A24-A13/A15L 制造商:BOURNS 制造商全稱(chēng):Bourns Electronic Solutions 功能描述:91, 92, 93, 94, 95, 96 - 5/8 ” Square Single-Turn Panel Control 97, 99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
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(xiě)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(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*