ADM1032
Table 11. CONSECUTIVE ALERT REGISTER CODES
Register Value
yxxx 000x
yxxx 001x
yxxx 011x
yxxx 111x
NOTE:
Number of Out-of-Limit
Measurements Required
1
2
3
4
Serial Bus Interface
x = don’t care bits, and y = SMBus timeout bit.
Default = 0. See SMBus section for more information.
Control of the ADM1032 is carried out via the serial bus.
The ADM1032 is connected to this bus as a slave device,
under the control of a master device.
There is a programmable SMBus timeout. When this is
enabled, the SMBus times out after typically 25 ms of no
activity. However, this feature is not enabled by default. To
enable it, set Bit 7 of the consecutive alert register
(Address = 22h).
Table 12. LIST OF ADM1032 REGISTERS
Read Address (Hex)
Not Applicable
00
01
02
03
04
05
06
07
08
Not Applicable
10
11
12
13
14
19
Write Address (Hex)
Not Applicable
Not Applicable
Not Applicable
Not Applicable
09
0A
0B
0C
0D
0E
0F
Not Applicable
11
12
13
14
19
Address Pointer
Local Temperature Value
External Temperature Value High Byte
Status
Configuration
Conversion Rate
Local Temperature High Limit
Local Temperature Low Limit
External Temperature High Limit High Byte
External Temperature Low Limit High Byte
One-Shot
External Temperature Value Low Byte
External Temperature Offset High Byte
External Temperature Offset Low Byte
External Temperature High Limit Low Byte
External Temperature Low Limit Low Byte
External THERM Limit
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0101 0101 (55h) (85C) (ADM1032)
0110 1100 (6Ch) (108C)
(ADM1032−1)
0101 0101 (55h) (85C)
0000 1010 (0Ah) (10C)
0000 0001 (01h)
0100 0001 (41h)
Undefined
Name
Power-On Default
Undefined
0000 0000 (00h)
0000 0000 (00h)
Undefined
0000 0000 (00h)
0000 1000 (08h)
0101 0101 (55h) (85C)
0000 0000 (00h) (0C)
0101 0101 (55h) (85C)
0000 0000 (00h) (0C)
20
21
22
FE
FF
NOTE:
20
21
22
Not Applicable
Not Applicable
Local THERM Limit
THERM Hysteresis
Consecutive ALERT
Manufacturer ID
Die Revision Code
Writing to Address 0F causes the ADM1032 to perform a single measurement. It is not a data register as such and it does not
matter what data is written to it.
Addressing the Device
In general, every SMBus device has a 7-bit device address
(except for some devices that have extended, 10-bit
addresses). When the master device sends a device address
over the bus, the slave device with that address responds.
The ADM1032 and the ADM1032−1 are available with one
SMBus address, which is Hex 4C (1001 100). The
ADM1032−2 is also available with one SMBus address;
however, that address is Hex 4D (1001 101).
The serial bus protocol operates as follows:
1. The master initiates data transfer by establishing a
START condition, defined as a high-to-low
transition on the serial data line SDATA, while the
serial clock line SCLK remains high. This
indicates that an address/data stream follows. All
slave peripherals connected to the serial bus
respond to the START condition and shift in the
next eight bits, consisting of a 7-bit address (MSB
first) plus an R/W bit, which determines the
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