ADIS16375 Data Sheet
Rev. E | Page 14 of 28
OUTPUT DATA REGISTERS
After the ADIS16375 completes its startup process, the PAGE_ID
register contains 0x0000, which sets Page 0 as the active page
for SPI access. Page 0 contains the output data, real-time clock,
status and product identification registers.
Table 10. Output Data Register Summary
Register Address Measurement
SYS_E_FLAG 0x08 System flags
DIAG_STS 0x0A Self test flags
ALM_STS 0x0C Alarm flags
TEMP_OUT 0x0E Temperature
X_GYRO_LOW 0x10 Gyroscope, X
X_GYRO_OUT 0x12 Gyroscope, X
Y_GYRO_LOW 0x14 Gyroscope, Y
Y_GYRO_OUT 0x16 Gyroscope, Y
Z_GYRO_LOW 0x18 Gyroscope, Z
Z_GYRO_OUT 0x1A Gyroscope, Z
X_ACCL_LOW 0x1C Accelerometer, X
X_ACCL_OUT 0x1E Accelerometer, X
Y_ACCL_LOW 0x20 Accelerometer, Y
Y_ACCL_OUT 0x22 Accelerometer, Y
Z_ACCL_LOW 0x24 Accelerometer, Z
Z_ACCL_OUT 0x26 Accelerometer, Z
X_DELTA_ANG_L 0x40 Delta angle, X
X_DELTA_ANG_H 0x42 Delta angle, X
Y_DELTA_ANG_L 0x44 Delta angle, Y
Y_DELTA_ANG_H 0x46 Delta angle, Y
Z_DELTA_ANG_L 0x48 Delta angle, Z
Z_DELTA_ANG_H 0x4A Delta angle, Z
X_DELTA_VEL_L 0x4C Delta velocity, X
X_DELTA_VEL_H 0x4E Delta velocity, X
Y_DELTA_VEL_L 0x50 Delta velocity, Y
Z_DELTA_VEL_L 0x54 Delta velocity, Z
Z_DELTA_VEL_H 0x56 Delta velocity, Z
TIME_MS_OUT 0x70 Time, min, and sec
TIME_DH_OUT 0x72 Time, day, and hour
TIME_YM_OUT 0x74 Time, year, and month
LOT_ID1 0x78 Lot identifier
LOT_ID2 0x7A Lot identifier
LOT_ID3 0x7C Lot identifier
PROD_ID 0x7E Product identifier
Inertial Sensor Data Format
The gyroscope, accelerometer, delta angle, and delta velocity
output data use a 32-bit, twos complement format. Each output
uses two registers to support this resolution. Figure 16 provides
an example of how each register contributes to each inertial
measurement. In this case, X_GYRO_OUT is the most significant
word (upper 16 bits), and X_GYRO_LOW is the least significant
word (lower 16 bits). In many cases, using the x_GYRO_OUT
registers alone provides sufficient resolution for preserving key
performance metrics.
09389-017
X-AXIS GYROSCOPE DATA
0 1515 0
X_GYRO_OUT X_GYRO_LOW
Figure 16. Gyroscope Output Format, DEC_RATE > 0
The arrows in Figure 17 describe the direction of the motion,
which produces a positive output response in each sensor’s
output register. The accelerometers respond to both dynamic
and static forces associated with acceleration, including gravity.
When lying perfectly flat, as shown in Figure 17, the z-axis
accelerometer output is 1 g, and the x and y accelerometers is 0 g.
09389-018
PIN 1
PIN 23
a
Y
g
Y
Y-AXIS
g
X
X-AXIS
a
X
Z-AXIS
a
Z
g
Z
Figure 17. Inertial Sensor Direction Reference Diagram
Rotation Rate (Gyroscope)
The registers that use the x_GYRO_OUT format are the primary
registers for the gyroscope measurements. When processing data
from these registers, use a 16-bit, twos complement data format.
Table 11, Table 12 and Table 13 provide each register’s numerical
format, and Table 14 provides x_GYRO_OUT digital coding
examples.
Table 11. X_GYRO_OUT (Page 0, Base Address = 0x12)
[15:0]
X-axis gyroscope data; twos complement, ±300°/sec
range, 0.013108°/sec per LSB, 0°/sec = 0x0000
Table 12. Y_GYRO_OUT (Page 0, Base Address = 0x16)
Bits Description
[15:0]
Y-axis gyroscope data; twos complement, ±300°/sec
range, 0.013108°/sec per LSB, 0°/sec = 0x0000
Table 13. Z_GYRO_OUT (Page 0, Base Address = 0x1A)
Bits Description
[15:0]
Z-axis gyroscope data; twos complement, ±300°/sec
range, 0.013108°/sec per LSB, 0°/sec = 0x0000
