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參數資料
型號： W83637HF
廠商： WINBOND ELECTRONICS CORP
英文描述： LPC I/O
中文描述： LPC的I / O
文件頁數： 104/149頁
文件大小： 936K
代理商： W83637HF
W83637HF
Publication Release Date: June 25, 2003
- 99 -
Revision 1.3
After Power-on reset, the value on RTSA# (pin 43) is latched by HEFRAS of CR26. In Compatible
PnP, a specific value (87h) must be written twice to the Extended Functions Enable Register (I/O port
address 2Eh or 4Eh). Secondly, an index value (02h, 07h-FFh) must be written to the Extended
Functions Index Register (I/O port address 2Eh or 4Eh same as Extended Functions Enable Register)
to identify which configuration register is to be accessed. The designer can then access the desired
configuration register through the Extended Functions Data Register (I/O port address 2Fh or 4Fh).
After programming of the configuration register is finished, an additional value (AAh) should be written
to EFERs to exit the Extended Function mode to prevent unintentional access to those configuration
registers. The designer can also set bit 5 of CR26 (LOCKREG) to high to protect the configuration
registers against accidental accesses.
The configuration registers can be reset to their default or hardware settings only by a cold reset (pin
MR = 1). A warm reset will not affect the configuration registers.
8.1.1.2 Extended Functions Enable Registers (EFERs)
After a power-on reset, the W83637HF enters the default operating mode. Before the W83637HF
enters the extended function mode, a specific value must be programmed into the Extended Function
Enable Register (EFER) so that the extended function register can be accessed. The Extended
Function Enable Registers are write-only registers. On a PC/AT system, their port addresses are 2Eh
or 4Eh (as described in previous section).
8.1.1.3 Extended Function Index Registers (EFIRs), Extended Function Data Registers(EFDRs)
After the extended function mode is entered, the Extended Function Index Register (EFIR) must be
loaded with an index value (02h, 07h-FEh) to access Configuration Register 0 (CR0), Configuration
Register 7 (CR07) to Configuration Register FE (CRFE), and so forth through the Extended Function
Data Register (EFDR). The EFIRs are write-only registers with port address 2Eh or 4Eh (as
described in section 12.2.1) on PC/AT systems; the EFDRs are read/write registers with port address
2Fh or 4Fh (as described in section 9.2.1) on PC/AT systems.
8.1.2 Configuration Sequence
To program W83637HF configuration registers, the following configuration sequence must be followed:
(1). Enter the extended function mode
(2). Configure the configuration registers
(3). Exit the extended function mode
8.1.2.1 Enter the extended function mode
To place the chip into the extended function mode, two successive wrtites of 0x87 must be applied to
Extended Function Enable Registers(EFERs, i.e. 2Eh or 4Eh).
8.1.2.2 Configuration the configuration registers
The chip selects the logical device and activates the desired logical devices through Extended
Function Index Register(EFIR) and Extended Function Data Register(EFDR). EFIR is located at the
same address as EFER, and EFDR is located at address (EFIR+1).
相關PDF資料
PDF描述
W83637HF-AW LPC I/O
W83697HF WINBOND I/O
W83697 WINBOND I/O
W83697F WINBOND I/O
W83697SF WINBOND I/O
相關代理商/技術參數
參數描述
W83637HF_06 制造商:WINBOND 制造商全稱:Winbond 功能描述:LPC I/O
W83637HF-AW 制造商:WINBOND 制造商全稱:Winbond 功能描述:LPC I/O
W83637HG 制造商:WINBOND 制造商全稱:Winbond 功能描述:LPC I/O
W83637HG-AW 功能描述:IC I/O CONTROLLER 128-QFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:* 標準包裝:3,000 系列:- 應用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應商設備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2
W83667HG-B 制造商:Nuvoton Technology Corp 功能描述:LPC SUPER I/O, PECI 1.1A*, SST 制造商:Nuvoton Technology 功能描述:LPC SUPER I/O, PECI 1.1A*, SST
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