User Manual

MPU-9250 Register Map and Descriptions
Document Number: RM-MPU-9250A-00
Revision: 1.4
Release Date: 9/9/2013
Reset value: 0x00
BIT
NAME
FUNCTION
[7:0]
I2C_SLV4_REG[7:0]
I2C slave 4 register address from where to begin data
transfer
Register 51 - I2C_SLV4_DO
Serial IF: R/W
Reset value: 0x00
BIT
NAME
FUNCTION
[7:0]
I2C_SLV4_DO[7:0]
Data to be written to I2C Slave 4 if enabled.
Register 52 - I2C_SLV4_CTRL
Serial IF: R/W
Reset value: 0x00
BIT
NAME
FUNCTION
[7]
I2C_SLV4_EN
1 – Enable data transfer with this slave at the sample rate. If read
command, store data in I2C_SLV4_DI register, if write command, write data
stored in I2C_SLV4_DO register. Bit is cleared when a single transfer is
complete. Be sure to write I2C_SLV4_DO first
0 – function is disabled for this slave
[6]
SLV4_DONE_INT_EN
1 – Enables the completion of the I2C slave 4 data transfer to cause an
interrupt.
0 – Completion of the I2C slave 4 data transfer will not cause an interrupt.
[5]
I2C_SLV4_REG_DIS
When set, the transaction does not write a register value, it will only read
data, or write data
[4:0]
I2C_MST_DLY
When enabled via the I2C_MST_DELAY_CTRL, those slaves will only be
enabled every (1+I2C_MST_DLY) samples (as determined by the
SMPLRT_DIV and DLPF_CFG registers.
Register 53 - I2C_SLV4_DI
Serial IF: R
Reset value: 0x00
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