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參數(shù)資料
| 型號(hào)： | LAN91C100FDREVB |
| 廠商： | 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)： | 53/79頁(yè) |
| 文件大小： | 585K |
| 代理商： | LAN91C100FDREVB |
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FEAST Fast Ethernet Controller with Full Duplex Capability
SMSC DS – LAN91C100FD Rev. D
Page 53
Rev.
10/14/2002
PRELIMINARY
Chapter 6 Board Setup Information
The following parameters are obtained from the EEPROM as board setup information:
ETHERNET INDIVIDUAL ADDRESS
I/O BASE ADDRESS
10BASET or AUI INTERFACE
MII or ENDEC INTERFACE
INTERRUPT LINE SELECTION
All the above mentioned values are read from the EEPROM upon hardware reset. Except for the
INDIVIDUAL ADDRESS, the value of the IOS switches determines the offset within the EEPROM for these
parameters, in such a way that many identical boards can be plugged into the same system by just
changing the IOS jumpers.
In order to support a software utility based installation, even if the EEPROM was never programmed, the
EEPROM can be written using the LAN91C100FD. One of the IOS combination is associated with a fixed
default value for the key parameters (I/O BASE, INTERRUPT) that can always be used regardless of the
EEPROM based value being programmed. This value will be used if all IOS pins are left open or pulled
high.
The EEPROM is arranged as a 64 x 16 array. The specific target device is the 9346 1024-bit Serial
EEPROM. All EEPROM accesses are done in words. All EEPROM addresses in the spec are specified as
word addresses.
REGISTER
EEPROM WORD ADDRESS
IOS Value * 4
(IOS Value * 4) + 1
Configuration Register
Base Register
INDIVIDUAL ADDRESS 20-22 hex
If IOS2-IOS0 = 7, only the INDIVIDUAL ADDRESS is read from the EEPROM. Currently assigned values
are assumed for the other registers. These values are default if the EEPROM read operation follows
hardware reset.
The EEPROM SELECT bit is used to determine the type of EEPROM operation: a) normal or b) general
purpose register.
a) NORMAL EEPROM OPERATION - EEPROM SELECT bit = 0
On EEPROM read operations (after reset or after setting RELOAD high) the CONFIGURATION
REGISTER and BASE REGISTER are updated with the EEPROM values at locations defined by the
IOS2-0 pins. The INDIVIDUAL ADDRESS registers are updated with the values stored in the
INDIVIDUAL ADDRESS area of the EEPROM.
On EEPROM write operations (after setting the STORE bit) the values of the CONFIGURATION
REGISTER and BASE REGISTER are written in the EEPROM locations defined by the IOS2-IOS0
pins.
The three least significant bits of the CONTROL REGISTER (EEPROM SELECT, RELOAD and
STORE) are used to control the EEPROM. Their values are not stored nor loaded from the EEPROM.
b) GENERAL PURPOSE REGISTER - EEPROM SELECT bit = 1
On EEPROM read operations (after setting RELOAD high) the EEPROM word address defined by the
POINTER REGISTER 6 least significant bits is read into the GENERAL PURPOSE REGISTER.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LAN91C100FDREVD | 制造商:SMSC 制造商全稱:SMSC 功能描述:FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY |
| LAN91C100-FD-SS | 制造商:SMSC 制造商全稱:SMSC 功能描述:FEAST Fast Ethernet Controller with Full Duplex Capability |
| 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 |
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