IMU-3000 INVENSENSE, IMU-3000 Datasheet - Page 41

• Manufacturer Part Number: IMU-3000
• Description: GYRO, TRI-AXIS, PROG +/-2000 DEG/S
• Manufacturer: INVENSENSE

Specifications of IMU-3000

• No. Of Axes: 3
• Sensor Case Style: QFN
• No. Of Pins: 24
• Supply Voltage Range: 2.1V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Interface: I2C, Serial
• Interface Type: I2C, Serial
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.15 Register 61 – User Control
Type: Read/Write
Description:
This register is used to enable various modes on the IMU-3000, as well as reset these functions.
For each of the functions that can be enabled, the function should be reset at the same time to
assure it works properly. Note that the reset bits in the register are automatically cleared after the
function is reset.
For example, to enable the FIFO set both the FIFO_EN and the FIFO_RST bits. This will start the
FIFO storage on the next sample period.
As an additional example, for an external processor to communicate directly to the external
accelerometer (i.e. have the secondary I
AUX_IF_EN bit should be cleared and the AUX_IF_RST bit should be set. This will allow the I
to pass through the IMU-3000 and allow the processor to control the accelerometer device (as well
as the IMU). Pass through mode is useful for allowing the processor to configure the accelerometer,
since the IMU-3000 can perform burst reads on the accelerometer, but is not set up to configure the
device.
Parameters:
DMP_EN
FIFO_EN
AUX_IF_EN
AUX_IF_RST
DMP_RST
FIFO_RST
GYRO_RST
Register
(Hex)
3D
(Decimal)
Register
61
Enable Digital Motion Processor (DMP)
Enable FIFO operation for sensor data
Enable IMU as master to accelerometer interface via secondary I
configure primary I
Reset secondary accelerometer interface function; set this whenever changing
AUX_IF_EN
Reset DMP function; set this whenever changing DMP_EN
Reset FIFO function; set this to clear FIFO or when changing FIFO_EN
Reset gyro analog and digital functions
IMU-3000 Product Specification
DMP_
Bit7
EN
FIFO_
Bit6
EN
2
C bus to pass through directly to the secondary I
41 of 56
AUX_IF_
2
C bus be directly connected to the primary I
Bit5
EN
Bit4
-
AUX_IF_
RST
Bit3
Document Number: PS-IMU-3000A-00-01.1
Revision: 1.1
Release Date: 08/19/2010
DMP_
Bit2
RST
FIFO_
RST
Bit1
2
C (clear bit to
2
2
GYRO_
C bus), the
C bus)
RST
Bit0
2
C bus
Default
Value
00h