- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄364515 > 84301 (LSI Corporation) 4-Port Fast Ethernet Controller( 4端口快速以太網(wǎng)控制器) PDF資料下載
參數(shù)資料
| 型號： | 84301 |
| 廠商： | LSI Corporation |
| 英文描述： | 4-Port Fast Ethernet Controller( 4端口快速以太網(wǎng)控制器) |
| 中文描述： | 4端口快速以太網(wǎng)控制器（4端口快速以太網(wǎng)控制器） |
| 文件頁數(shù)： | 27/62頁 |
| 文件大小： | 606K |
| 代理商： | 84301 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當前第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁
84301 4-Port
Fast Ethernet Controller
4-27
MD400158/D
3.6.4 Transmit Status Register
Within each port's transmit section are 2 transmit status
registers. These registers give the appearance of a single
register to an external CPU. With each transmission at-
tempt, whether successful or not, one of the status regis-
ters is written with the transmit status for that packet and
bit 7 of that register is set to a 0 until both registers are full.
When both registers are full, no new transmit status can be
written until one of the registers is read. To an external
CPU, both transmit status registers appear as a single
register. If the CPU reads a LOW value for bit 7 of the
transmit status register, this indicates that either one or
both of the nternal transmit registers contains new status.
A delay ime after he highgoing edge of he read operation
that reads new transmit status, one of the nternal transmit
status registers will be cleared and made available for new
transmit status. Following are the types of transmit status
given through status register:
A port can be programmed so hat f both ransmit registers
are full, no new transmissions will occur until at least one
of the register is cleared by reading it. To program this
feature, bit #1 of configuration register #2 needs to be
written to a 1 value.
Also a port can be programmed so that no new transmit
status is loaded if the transmission is successful.
7
6
5
4
3
2
1
0
Transmit Status Register Format
Bit
Value
Definition
R/W
Value After
Reset
0
‘1’
Indicates the occurrence of a
Transmit FIFO underflow.
R
0
1
‘1’
Indicates the occurrence of a
collision during a transmission
attempt.
R
0
2
‘1’
Indicates that 16 collisions
occurred while attempting to
transmit a packet.
R
0
3
‘1’
Indicates the successful
completion of a packet
tranmission.
R
0
4
‘1’
Indicates the occurrence of a
carrier sense error during a
transmission attempt.
R
0
5
‘1’
Indicates the occurrence of a
deferred transmission due to
carrier sense being detected HIGH.
R
0
6
‘1’
Indicates the occurrence of a late
collision. Late collision is the
occurrence of a transmit collision
64 byte times after TXEN went
HIGH.
R
0
7
‘1’
Indicates old/new status.
R
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 84717000 | MINIATURNAEHERUNGSSCHALTER 4MM GLATT PNP |
| 84717002 | MINIATURNAEHERUNGSSCHALTER M5 PNP |
| 84717100 | MINIATURNAEHERUNGSSCHALTER 4MM GLATT NPN |
| 84717102 | MINIATURNAEHERUNGSSCHALTER M5 NPN |
| 84771 | PHOTO SENSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 8430100000 | 功能描述:OPTOCOUPLER 115VAC/DC 1 CH PLUG RoHS:是 類別:隔離器 >> 光隔離器 - 晶體管，光電輸出 系列:- 標準包裝:1,500 系列:NEPOC 通道數(shù):1 輸入類型:DC 電壓 - 隔離:2500Vrms 電流傳輸比（最小值）:20% @ 16mA 電流傳輸比（最大）:- 輸出電壓:7V 電流 - 輸出 / 通道:8mA 電流 - DC 正向(If):25mA Vce飽和（最大）:- 輸出類型:有 Vcc 的晶體管 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| 8430-1032-A-0 | 制造商:RAF Electronic Hardware 功能描述: |
| 8430110000 | 功能描述:OPTOCOUPLER 24VAC/DC 4CH PLUG RoHS:是 類別:隔離器 >> 光隔離器 - 晶體管，光電輸出 系列:- 標準包裝:1,500 系列:NEPOC 通道數(shù):1 輸入類型:DC 電壓 - 隔離:2500Vrms 電流傳輸比（最小值）:20% @ 16mA 電流傳輸比（最大）:- 輸出電壓:7V 電流 - 輸出 / 通道:8mA 電流 - DC 正向(If):25mA Vce飽和（最大）:- 輸出類型:有 Vcc 的晶體管 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| 8430114 | 制造商:SAB NORTH AMERICA 功能描述:SL843C continuous flex servo motor feedback cable 26/10c + 20/4c UL CSA shielded |
| 843011AG | 制造商:Integrated Device Technology Inc 功能描述:843011AG - Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。