User Manual

MPU-9250 Register Map and Descriptions
Document Number: RM-MPU-9250A-00
Revision: 1.4
Release Date: 9/9/2013
5 Register Map for Magnetometer
The register map for the MPU-9250’s Magnetometer (AK8963) section is listed below.
Name Address
READ/
WRITE
Description
Bit
width
Explanation
WIA
00H
READ
Device ID
8
INFO
01H
READ
Information
8
ST1
02H
READ
Status 1
8
Data status
HXL
03H
READ Measurement data
8
X-axis data
HXH 04H 8
HYL
05H
8
Y-axis data
HYH 06H 8
HZL
07H
8
Z-axis data
HZH
08H
8
ST2
09H
READ
Status 2
8
Data status
CNTL 0AH
READ/
WRITE
Control 8
RSV 0BH
READ/
WRITE
Reserved
8 DO NOT ACCESS
ASTC 0CH
READ/
WRITE
Self-test 8
TS1 0DH
READ/
WRITE
Test 1 8 DO NOT ACCESS
TS2 0EH
READ/
WRITE
Test 2 8 DO NOT ACCESS
I2CDIS 0FH
READ/
WRITE
I
2
C disable 8
ASAX 10H READ
X-axis sensitivity adjustment value
8
Fuse ROM
ASAY 11H READ
Y-axis sensitivity adjustment value
8
Fuse ROM
ASAZ 12H READ Z-axis sensitivity adjustment value
8
Fuse ROM
Table 2 Register Table
Addresses from 00H to 0CH and from 10H to 12H are compliant with automatic increment function of serial
interface respectively. Values of addresses from 10H to 12H can be read only in Fuse access mode. In other
modes, read data is not correct.
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