BMP384 datasheet(19/58 Pages) BOSCH

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Bosch Sensortec | BMP384 Datasheet

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Modifications reserved |Data subject not change without notice | Printed in Germany

Document number: BST-BMP384-DS003-11 Revision_1.0_112020

Table 14: Sensor-time frame

Bit

Header

Sensor-

time

time_xlsb[7:0]

time_lsb[7:0]

time_msb[7:0]

The data for the sensor-time frame consists of register sensor_time content at the time the sensortime frame transmission

has started. A sensor-time frame is not stored in the FIFO, but append to every FIFO burst read operation after all data has

been transmitted if fifo_time_en=‘1’.

Table 15: Normal pressure and temperature frame

Bit

Header

Temp

temp_xlsb[7:0]

temp_lsb[7:0]

temp_msb[7:0]

Press

press_xlsb[7:0]

press_lsb[7:0]

press_msb[7:0]

If one of t and p is ‘0’, the corresponding data is not part of the frame; the frame is therefore reduced to 4 bytes.

A FIFO empty frame is a sensor frame with no sensor enabled. This frame is returned if the last frames was read-out or if

FIFO is empty.

Table 16: FIFO empty frame format

Bit

Header

Data

When a configuration error is detected, a configuration error frame is stored into the FIFO

Table 17: Control frame: configuration error

Bit

Header

Opcode

If FIFO is enabled and a change in registers “FIFO_CONF_2” or “OSR” or “ODR” or “CONFIG” or press_en or temp_en

occurs, a control frame is inserted just before the first sensor frame with new configuration is stored to the FIFO. If multiple

configuration change becomes active at the same time, only one control frame is inserted. Configuration changes are tracked

when the device is in normal mode.

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