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參數資料
| 型號： | W89C841F |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 3-IN - 1 10/100M FAST ETHERNET CONTROLLER |
| 中文描述： | 2 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP128 |
| 封裝： | 14 X 20 X 2.75 MM, QFP-128 |
| 文件頁數： | 30/102頁 |
| 文件大小： | 1154K |
| 代理商： | W89C841F |
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W89C841F/D
- 30 -
Dc4/DEEAR register is used as an interface to access the data between the system and EEPROM.
The following table lists the reading and writing steps for EEPROM.
COMMAND
STEP
EEPROM Read
Set EEPROM access bit EESEL to 1.
Set EEPROM offset address to bits EEOA
Set EEPROM Read command to bit EERW
Set Start EEPROM Read/write command to bit StartEERW
Waiting for read operation completed until bit StartEERW change to 0.
Read data from bits EEData.
Disable EEPROM
Write Protection
Set EEPROM access bit EESEL to 1.
Set EEPROM write protection disable command to bit EERW
Set Start EEPROM Read/write command to bit StartEERW
Waiting for write protection disable operation completed until bit StartEERW
change to 0.
EEPROM Write
1) Set EEPROM access bit EESEL to 1.
2) Set EEPROM offset address to bits EEOA
3) Set EEPROM Data to bits EEData
4) Set EEPROM write command to bit EERW
5) Set Start EEPROM Read/write command to bit StartEERW
6) Waiting for write operation completed until bit StartEERW change to 0.
Enable EEPROM
Write Protection
Set EEPROM access bit EESEL to 1.
Set EEPROM write protection enable command to bit EERW
Set Star EEPROM Read/Write command to bit StartEERW.
Waiting for bit StartEERW change to 0.
BootROM Read and Flash Programming Function
W89C841F can address up to 256 Kbytes memory space for the on-board BootROM or Flash memory
device. The on-board BootROM device will be mapped into the host memory by the system BIOS.
W89C841F will return the mapped memory address depending on the field BootROM size select of
register Dc0/DBRAR[30:28]. This field is loaded from EEPROM after power on reset. The relationship
between the return value from the register F30/FERBA and the field BootROM size select of register
Dc0/DBRAR[30:28] is listed as the following table.
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PDF描述 |
|---|---|
| W89C880F | 100Base-Tx/T4 Multiport Repeater Controller(100Base-Tx/T4多端口中繼器控制器) |
| W89C92 | PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
| W89C926 | PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
| W89C926F | 10M PCMCIA Ethernet Network Interface Controller |
| W89C940 | ELANC-PCI (TWISTED-PAIR ETHER-LAN CONTROLLER WITH PCI INTERFACE) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W89C841F/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3-IN-1 100BASE-TX/FX & 10BASE-T Ethernet Controller |
| W89C880F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Hub Controller |
| W89C92 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
| W89C926 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER |
| W89C926F | 制造商:WINBOND 制造商全稱:Winbond 功能描述:10M PCMCIA Ethernet Network Interface Controller |
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