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FXLS93421 Datasheet(PDF) 108 Page - NXP Semiconductors |
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FXLS93421 Datasheet(HTML) 108 Page - NXP Semiconductors |
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108 / 254 page  NXP Semiconductors FXLS9xxxx Dual channel inertial sensor 11.4.1.3 VBUF capacitance monitor timing, PSI5 asynchronous mode aaa-030608 tA_CAPTEST tA_CAPTEST tCAPTST_TIME tCAPTST_TIME capacitor present capacitor open time IBUS_I Cap_Test VBUF VBUF_UV_f VBUF_ERR Figure 14. VBUF capacitor monitor timing, psi5 asynchronous mode 11.4.2 BUS_I, VBUF, VREG, VREGA, undervoltage monitor A circuit is incorporated to monitor the BUS_I supply voltage and the internally regulated voltages, VBUF, VREG, and VREGA. If any of the voltages fall below the specified under- voltage thresholds in Section 10.4, the device reacts as described: • DSI3 – If any supply falls below the specified threshold during a command transmission in Command and Response Mode, the command is ignored, and no DSI3 response transmission occurs. Once the supply returns above the threshold, the device will resume decoding commands as specified in Section 11.2.2.5. – If any supply falls below the specified threshold during a response transmission in Command and Response Mode, the response is terminated. No attempt is made to resend the response. Once the supply returns above the threshold, the device will resume decoding commands as specified in Section 11.2.2.5. – If any supply falls below the specified threshold during a command transmission in Periodic Data Collection Mode, the command is ignored and no periodic response occurs during that period. Once the supply returns above the threshold, the device will resume periodic transmissions in response to commands as specified in Section 11.2.2.5. Any partially received Background Diagnostic Mode command is flushed and the device will begin decoding a new Background Diagnostic Mode command. – If any supply falls below the specified threshold during a periodic response transmission in Periodic Data Collection Mode, the response is terminated. No attempt is made to resend the response. Once the supply returns above the threshold, the device will resume periodic transmissions in response to commands as specified in Section 11.2.2.5. Any partially received Background Diagnostic Mode command is flushed and the device will begin decoding a new Background Diagnostic Mode command. – If any supply falls below the specified threshold during a Background Diagnostic Mode response transmission in Periodic Data Collection Mode, the response is terminated. No attempt is made to resend the response. Once the supply returns above the threshold, the device will resume periodic transmissions in response to commands as specified in Section 11.2.2.5. Any partially received Background Diagnostic Mode command is flushed and the device will begin decoding a new Background Diagnostic Mode command. FXLS9xxxx All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 6 — 8 February 2021 108 / 254 |
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