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參數(shù)資料
| 型號(hào)： | LM87 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing |
| 中文描述： | 串行接口系統(tǒng)硬件監(jiān)控與遠(yuǎn)程二極管溫度傳感器 |
| 文件頁(yè)數(shù)： | 24/32頁(yè) |
| 文件大?。?/td> | 470K |
| 代理商： | LM87 |
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Functional Description
(Continued)
13.0 REGISTERS AND RAM
13.1 Address Pointer Register
The main register is the Address Pointer Register. The bit
designations are as follows:
Bit
7-0
Name
Read/Write
Write
Description
Address Pointer
Address of RAM and Registers. See the tables below for detail.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Address Pointer (Power On default 00h)
A4
A7
A6
A5
A3
A2
A1
A0
13.2 Address Pointer Index (A7–A0)
Registers and RAM
A6–A0 in
Hex
Power On Value of
Registers:
<
7:0
>
in Binary
0100 0110
Notes
Internal Temp. Hardware
High Limit
13h
70 C Default -
<
7:0
>
=0100 0110 - User
adjustable. Lockable by setting bit 1 of
register 4Ah.
85 C Default -
<
7:0
>
=0101 0101 - User
adjustable. Lockable by setting bit 2 of
register 4Ah.
Always set to 00h
External Temp. Hardware
High Limit
14h
0101 0101
Test Register
Channel Mode Register
Internal Temp. Hardware
High Limit
External Temp. Hardware
High Limit
Value RAM
15h
16h
17h
0000 0000
0000 0000
0100 0110
70 C Default -
<
7:0
>
=0100 0110 - User
adjustable
85 C Default -
<
7:0
>
=0101 0101 - User
adjustable
See Section 13.18 for details. Address 19h
default=1111 1111
This designates the National Semiconductor
LM87.
Revisions of this device will start with 1 and
increment by one.
18h
0101 0101
19h–3Dh
Company ID
3Eh
0000 0010
Revision
3Fh
0000 0110
Configuration Register 1
Interrupt Status Register 1
Interrupt Status Register 2
Interrupt Mask Register 1
Interrupt Mask Register 2
CI Clear Register
VID0-3/Fan Divisor
Register
VID4 Register
40h
41h
42h
43h
44h
46h
47h
0000 1000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
<
7:4
>
= 0101;
<
3:0
>
= VID3–VID0
<
7:1
>
=1000 000;
<
0
>
=VID4
0000 0000
0000 0000
49h
Configuration Register 2
Interrupt Status Register 1
Mirror
Interrupt Status Register 2
Mirror
SMBALERT# Enable
4Ah
4Ch
4Dh
0000 0000
80h
0010 0000
L
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