ADM1025 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADM1025 Datasheet PDF : 16 Pages
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ADM1025/ADM1025A
Table X. Register 47h – VID REGISTER
(Power-On Default = 0000 (VID[3:0]))
Bit Name
R/W
Description
0–3 VID[3:0]
Read-Only The VID[3:0] inputs from
Pentium/PRO power supplies
to indicate the operating
voltage (e.g., 1.3 V to 2.9 V).
4–5 Reserved
Read-Only Undefined
6 Offset Config Read/Write Configures offset register to
be used with internal or
external channel. If Bit 0 of
Test Register = 1 and Bit 7 of
VID Register = 0, then setting
this bit to 1 configures tHhe
Offset Register to the internal
temperature channel. Clearing
this bit configures the Offset
Register to the external
temperature channel.
(Default = 0.)
7 RST ENABLE Read/Write When set to 1, enables the
RST output function on
Pin 16. This bit defaults to 0
on power-up. (RST Disabled.)
Table XII. Registers 15h–3Dh – Value and Limit Registers
(continued)
Address R/W
Description
34h
Read/Write 12 V Low Limit
35h
Read/Write VCC High Limit
36h
Read/Write VCC Low Limit
37h
Read/Write Remote Temperature High Limit
38h
Read/Write Remote Temperature Low Limit
39h
Read/Write Local Temperature High Limit
3Ah
Read/Write Local Temperature Low Limit
For the high limits of the voltages, the device is doing a greater-than compari-
son. For the low limits, however, it is doing a less-than or equal comparison.
Table XIII. Register 15h – Manufacturers Test Register
Bit Name
0
R/W
Read/Write
1
Read/Write
2–7 Reserved Read/Write
Description
Used to select RST or INT
functions. Refer to RST/INT
Output section.
Used to select RST or INT
functions. Refer to RST/INT
Output section.
Reserved. Only values written
to these bits should be zeros.
Table XI. Register 49h – VID4 Register
(Power-On Default = 1000 000(VID4))
Bit
Name
0
VID4
R/W
Read
1–7
Reserved
Read
Description
VID4 Input (If Selected)
(Defaults to 0)
Table XII. Registers 15h–3Dh – Value and Limit Registers
Address
R/W
Description
15h
Read/Write Manufacturers Test Register
1Fh
Read/Write Offset Register
20h
Read-Only 2.5 V Reading
21h
Read-Only VCCP Reading
22h
Read-Only 3.3 V Reading
23h
Read-Only 5 V Reading
24h
Read-Only 12 V Reading
25h
Read-Only VCC Reading
26h
Read-Only Remote Diode Temperature
Reading
27h
Read-Only Local Temperature Reading
2Bh
Read/Write 2.5 V High Limit
2Ch
Read/Write 2.5 V Low Limit
2Dh
Read/Write VCCP High Limit
2Eh
Read/Write VCCP Low Limit
2Fh
Read/Write 3.3 V High Limit
30h
Read/Write 3.3 V Low Limit
31h
Read/Write 5 V High Limit
32h
Read/Write 5 V Low Limit
33h
Read/Write 12 V High Limit
Table XIV. Register 3Eh – Company ID
Value (Bits 7:0) R/W
Description
0100 0001
Read-Only
This location contains the
company identification number
that may be used by software to
determine the manufacturer’s
device. This register is read-only.
Table XV. Register 3Fh – Stepping
Value (Bits 7:0) R/W
Description
0010 [Version]
Read-Only
Stepping ID Number and
Version
Table XVI. NAND Tree Test Vectors
Vector
ADD/RST/
No. SDA SCL VID0 VID1 VID2 VID3 INT/NTO
1
0
00
0 001
2
0
00
0 010
3
0
00
0 111
4
0
00
1 110
5
0
01
1 111
6
0
11
1 110
7
1
11
1 111
REV. C
–15–
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