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參數(shù)資料
| 型號(hào)： | W83627SF |
| 英文描述： | W83627F plus Smart Card Reader Interface. VID Control. GP I/O? |
| 中文描述： | W83627F加上智能卡閱讀器接口。 VID控制。大獎(jiǎng)賽的I / O？ |
| 文件頁(yè)數(shù)： | 97/147頁(yè) |
| 文件大?。?/td> | 1348K |
| 代理商： | W83627SF |
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W83627SF
PRELIMINARY
Publication Release Date: Nov. 2000
Revision 0.60
- 90 -
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.
9.1.2 Extended Functions Enable Registers (EFERs)
After a power-on reset, the W83627SF enters the default operating mode. Before the W83627SF 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).
9.1.3 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.
9.2 Configuration Sequence
To program W83627SF 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
9.2.1 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).
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相關(guān)代理商/技術(shù)參數(shù) |
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| W83627SF_05 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:WINBOND I/O |
| W83627SF-AW | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:WINBOND I/O |
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| W83627SG-AW | 功能描述:IC LPC SUPER I/O 128-PQFP RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 專(zhuān)用 系列:* 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話(huà) 接口:I²C，2 線(xiàn)串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR) 安裝類(lèi)型:表面貼裝 產(chǎn)品目錄頁(yè)面:1015 (CN2011-ZH PDF) 其它名稱(chēng):296-25223-2 |
| W83627THF | 制造商:Nuvoton Technology Corp 功能描述:I/O Controller LPC Controller 128-Pin PQFP |
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