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參數資料
型號: W83781D
廠商: WINBOND ELECTRONICS CORP
元件分類: 模擬信號調理
英文描述: MONITORING IC
中文描述: SPECIALTY ANALOG CIRCUIT, PQFP48
封裝: LQFP-48
文件頁數: 21/53頁
文件大小: 725K
代理商: W83781D
W83781D
PRELIMINARY
- 16 -
Publication Release Date : Nov. 1997
Revision 0.60
8. CONTROL AND STATUS REGISTERS
8.1 Address Register (Port x5h)
The main register is the INDEX Register located at Port x5h. The bit designations are as follows:
7 6 5 4 3 2 1 0
INDEX Pointer
Busy
Bit7: Read Only
The logical 1 indicates the device is busy because of a Serial Bus transaction or another ISA bus
transaction. With checking this bit, multiple ISA drivers can use W83781D without
interfering with each other or a Serial Bus driver.
It is the user's responsibility not to have a Serial Bus and ISA bus operations at the same time.
This bit is:
Set:
with a write to Port x5h or when a Serial Bus transaction is in progress.
Reset:
with a write or read from Port x6h if it is set by a write to Port x5h, or when the Serial Bus
transaction is finished.
Bit 6-0: Read/Write
INDEX of Control and Status Registers. See the tables below for detail.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Busy
Index Pointer (Power On default 00h)
(Power On default 0)
A6
A5
A4
A3
A2
A1
A0
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