BMP585 datasheet(41/71 Pages) BOSCH

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Bosch Sensortec

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Document number: BST-BMP585-DS003-02

as well as in the event of applications for industrial property rights

5.7 I3C Protocol

BMP585 supports the I³C protocol 1.0. Following I³C features are supported:



I²C compatibility including:



Support of I2C-like SDR messages to the BMP585



bus traffic of I2C messages to legacy I2C slaves



I3C single data rate (SDR) mode with up to 12.5 MHz data rate



In-Band Interrupt (IBI)



Timing control asynchronous 0 mode (restricted to maximum 11 MHz I3C frequency and a minimum of 200 kHz)



Timing control synchronous mode

The I3C bus uses the pin SCL for serial clock and SDX as SDA for serial data input and output for the signal lines.

5.7.1 I3C Identifiers

The I3C protocol uses several identifiers and codes to handle communication between several masters and slaves. For

communication with this device, there are defined the I3C provisional ID, the Device Characteristics Register (DCR), the

Bus Characteristics Register (BCR) and the Mandatory Byte (MDB) for IBIs. The I3C provisional ID has the value defined

in Table 21.

Table 21: I3C provisional identifier

The value of the Device Characteristics Register (DCR) is fixed to 0x62 to indicate a pressure sensor, as shown in Table

22. See also https://www.mipi.org/MIPI_I3C_device_characteristics_register.

Table 22: I3C device characteristics register (DCR)

DCR<7>

DCR<6>

DCR<5>

DCR<4>

DCR<3>

DCR<2>

DCR<1>

DCR<0>

Device ID

The value of the Bus Characteristics Register (BCR) is fixed to 0x06, as shown in Table 23.

Table 23: I3C bus characteristics registers (BCR)

BCR <7:6>

BCR <5>

BCR <4>

BCR <3>

BCR <2>

BCR <1>

BCR <0>

I3C Slave

Reserved

Not a bridge

Device will

always respond

to I3C Bus

commands

Mandatory

payload after IBI

IBI capable

Max data Speed:

no limitation

2’b00

1’b0

1’b1

1’b0

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