User Manual

HMC5883
www.honeywell.com 17
Identification Register A
The identification register A is used to identify the device. IRA0 through IRA7 indicate bit locations, with IRA denoting the
bits that are in the identification register A. IRA7 denotes the first bit of the data stream. The number in parenthesis
indicates the default value of that bit.
The identification value for this device is stored in this register. This is a read-only register.
Register values. ASCII value H
IRA7
IRA6
IRA5
IRA4
IRA3
IRA2
IRA1
IRA0
0
1
0
0
1
0
0
0
Table 22: Identification Register A Default Values
Identification Register B
The identification register B is used to identify the device. IRB0 through IRB7 indicate bit locations, with IRB denoting the
bits that are in the identification register A. IRB7 denotes the first bit of the data stream.
Register values. ASCII value 4
Table 23: Identification Register B Default Values
Identification Register C
The identification register C is used to identify the device. IRC0 through IRC7 indicate bit locations, with IRC denoting the
bits that are in the identification register A. IRC7 denotes the first bit of the data stream.
Register values. ASCII value 3
Table 24: Identification Register C Default Values
IRB7
IRB6
IRB5
IRB4
IRB3
IRB2
IRB1
IRB0
0
0
1
1
0
1
0
0
IRC7
IRC6
IRC5
IRC4
IRC3
IRC2
IRC1
IRC0
0
0
1
1
0
0
1
1