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參數資料
型號: W83877TF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(用于個人計算機的多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 133/154頁
文件大小: 821K
代理商: W83877TF
W83877TF
Publication Release Date: March 1998
- 107 -
Version 0.61
8.2.45 Configuration Register 3A (CR3A), default=00H
When the device is in Extended Function mode and EFIR is 3AH, the CR3A register can be accessed
through EFDR. The bit definitions are as follows:
1
2
3
4
5
6
7
0
UPULLEN
SMI_EN
reserved
reserved
reserved
TMIN_SEL
reserved
reserved
Bit 7 - bit 6 : Reserved, fixed at 0.
TMIN_SEL (Bit 5): Time resolution of the auto power machines of all devices.
CR35 to CR39 store the initial counts of the devices.
0
one second
1
one minute
Bit 4 - bit 2: Reserved, fixed at 0.
SMI_EN (Bit 1): SMI output pin enable.
While an SMI event is raised on the output of the SMI logic, this bit determines whether the SMI
interrupt will be generated on the SMI output SMI pin and on the Serial IRQ IRQSER pin while in
Serial IRQ mode.
0
disable
1
enable
UPULLEN (Bit 0): Enable the pull up of IRQSER pin in Serial IRQ mode.
0
disable the pull up of IRQSER pin.
1
enable the pull up of IRQSER pin.
8.2.46 Configuration Register 3B (CR3B), default=00H
Reserved for testing. Should be kept all 0's.
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