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ISM330BX Datasheet(PDF) 31 Page - STMicroelectronics

Part # ISM330BX
Description  6-axis IMU (inertial measurement unit) with wide bandwidth, low-noise accelerometer, embedded AI and sensor fusion for industrial applications
PDF  150 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ISM330BX Datasheet(HTML) 31 Page - STMicroelectronics

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5.3
TDM interface
Time-division multiplexing (TDM) is a method of putting multiple data streams in one data signal by separating the
signal into many frames. There are many ways to accomplish this.
5.3.1
Frame synchronization (WCLK)
The function of the WCLK is simply to identify the beginning of a frame. In particular the frame starts at the rising
edge of WCLK and the WCLK widths supported are:
•
50% duty cycle
•
One slot width (16 BCLK)
•
One BCLK width
In TDM mode, ISM330BX shall output accelerometer data on the TDMout pin at the following sampling rates:
•
WCLK = 8 kHz
•
WCLK = 16 kHz
5.3.2
Serial clock (BCLK)
The sole purpose of the serial clock BCLK is to shift the data out of the serial TDMout port. To this purpose, the
TDM interface uses an internal counter that is set to one when the rising edge of the WCLK is detected, and it is
reset to zero when the maximum number of BCLK in a WCLK period is reached.
ISM330BX
Digital interfaces
DS14588 - Rev 2
page 31/150



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