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ISM330BX датащи(PDF) 20 Page - STMicroelectronics |
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ISM330BX датащи(HTML) 20 Page - STMicroelectronics |
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20 / 150 page ![]() 4.4.3 TDM - time-division multiplexing interface @VDDIO = 1.8 V, T = 25°C unless otherwise noted. Refer to Section 5.3: TDM interface for additional details. Table 9. TDM timing values Symbol Parameter Test conditions Min. Typ. Max. Unit BCLKf BCLK frequency (1/tp) WCLK = 16 kHz 2048 kHz BWCLKA BCLK/WCLK frequency accuracy -0.1 +0.1 % BCLKj BCLK jitter 4 ns (peak to peak) WCLK8 8 kHz WCLK mode 8 kHz WCLK16 16 kHz WCLK mode 16 PDC All clock pin duty cycle - referred to BCLK (except WCLK) 45 55 % WST WCLK setup time before BCLK rising/falling edge (tss1) 20 ns WHT WCLK hold time after BCLK rising/falling edge (ths3) 20 ns TDMST TDMout setup time before BCLK rising/falling edge (tss2) 15 ns TDMHTR TDMout hold time after BCLK rising/falling edge (ths1) 15 ns TDMHTZ TDMout hold time of LSB after BCLK rising/falling edge (ths2) 15 65 ns CBCLK BCLK pin capacitance 10 pF CTDMout TDMout load capacitance 60 Note: All setup times and hold times in Table 9 and in Figure 10 are valid for BCLK polarity set to “clock on rising”. If BCLK polarity is set to “clock on falling”, then all setup and hold times will refer to the falling edge of BCLK instead. Please refer to Section 5.3: TDM interface for additional details. Figure 10. TDM timing diagram BCLK TDMout MSB LSB WCLK tss1 t p tss2 ths1 ths2 ths3 ISM330BX Module specifications DS14588 - Rev 2 page 20/150 |
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