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參數(shù)資料
| 型號： | W83697UF |
| 英文描述： | W83697F plus 2 Extra UART (total 4 UART) |
| 中文描述： | W83697F加2額外的UART（共4 UART）的 |
| 文件頁數(shù)： | 24/78頁 |
| 文件大?。?/td> | 475K |
| 代理商： | W83697UF |
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W83697UF
Publication Release Date: Dec.2002
- 20 - Revision 1.0
2. CONFIGURATION REGISTER
2.1 Plug and Play Configuration
The W83697UF uses Compatible PNP protocol to access configuration registers for setting up
different types of configurations. In W83697UF, there are eleven Logical Devices (from Logical
Device 0 to Logical Device B with the exception of logical device 4 for backward compatibility) which
correspond to eleven individual functions: FDC (logical device 0), PRT (logical device 1), UART1
(logical device 2), UART2 (logical device 3), CIR (Consumer IR, logical device 6), GPIO1 (logical
device 7), GPIO5(logical device 8),GPIO2 ~GPIO4(logical device 9), ACPI ((logical device A), and
Hardware monitor (logical device B). Each Logical Device has its own configuration registers (above
CR30). Host can access those registers by writing an appropriate logical device number into logical
device select register at CR7.
2.2 Compatible PnP
2.2.1 Extended Function Registers
In Compatible PnP, there are two ways to enter Extended Function and read or write the configuration
registers. HEFRAS (CR26 bit 6) can be used to select one out of these two methods of entering the
Extended Function mode as follows:
HEFRAS
0
1
address and value
write 87h to the location 2Eh twice
write 87h to the location 4Eh twice
After Power-on reset, the value on RTSA# (pin 49) 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.
x
x
x
x
x
x
DRATE0
DRATE1
0
1
2
3
4
5
7
6
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| W83697UG | 功能描述:IC LPC SUPER I/O 128-PQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標準包裝:3,000 系列:- 應(yīng)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(yīng)商設(shè)備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
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| W83768 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:I/O COUPLER |
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