ICM-20602
9.41 REGISTER 116 – FIFO READ WRITE
Register Name: FIFO_R_W
Register Type: READ/WRITE
Register Address: 116 (Decimal); 74 (Hex)
BIT
[7:0]
NAME
FIFO_DATA[7:0]
FUNCTION
Read/Write command provides Read or Write operation for the FIFO.
Description:
This register is used to read and write data from the FIFO buffer.
Data is written to the FIFO in order of register number (from lowest to highest). If all the FIFO enable flags (see below) are enabled,
the contents of registers 59 through 72 will be written in order at the Sample Rate.
The contents of the sensor data registers (Registers 59 to 72) are written into the FIFO buffer when their corresponding FIFO enable
flags are set to 1 in FIFO_EN (Register 35).
If the FIFO buffer has overflowed, the status bit FIFO_OFLOW_INT is automatically set to 1. This bit is located in INT_STATUS
(Register 58). When the FIFO buffer has overflowed, the oldest data will be lost and new data will be written to the FIFO unless
register 26 CONFIG, bit[6] FIFO_MODE = 1.
If the FIFO buffer is empty, reading register FIFO_DATA will return a unique value of 0xFF until new data is available. Normal data is
precluded from ever indicating 0xFF, so 0xFF gives a trustworthy indication of FIFO empty.
9.42 REGISTER 117 – WHO AM I
Register Name: WHO_AM_I
Register Type: READ only
Register Address: 117 (Decimal); 75 (Hex)
BIT
[7:0]
NAME
WHOAMI
FUNCTION
Register to indicate to user which device is being accessed.
This register is used to verify the identity of the device. The contents of WHOAMI is an 8-bit device ID. The default value of the
register is 0x12. This is different from the I2C address of the device as seen on the slave I2C controller by the applications processor.
The I2C address of the ICM-20602 is 0x68 or 0x69 depending upon the value driven on AD0 pin.
Document Number: DS-000176
Revision: 1.0
Page 48 of 57
Revision Date: 10/03/2016
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