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STV8247 Datasheet(PDF) 47 Page - STMicroelectronics |
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STV8247 Datasheet(HTML) 47 Page - STMicroelectronics |
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47 / 149 page  47/149 STV82x7 I²C Interface 11.2 Start-up and Configuration Change Procedure Figure 27: Flow chart Load Patch File HW_RESET bit = 1 (DSP RUN) (DSP inititialization) Device Configuration Set-up (analog or digital) HOST_RUN bit = 1 (start DSP processing) (change configuration) INIT_MEM bit = 0 (registers 85h to FFh are not reset) Clock PLLs progammation (for Crystal value different than 27 MHz) =1 =0 (FS1 & FS2 registers) (by I²C transfer) (bit 2 in HOST_CMD register) (bit 0 in DSP_STATUS register) HOST_RUN bit = 0 (bit 0 in DSP_RUN register) HOST_NO_INIT bit = 1 (OPTIONAL) (bit 1 in DSP_RUN register) (stop DSP processing) INIT_MEM bit ? Hardware Reset (by pin 43) Power ON NOTE: This HW reset after Power ON is mandatory to avoid bad device configuration |
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