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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STW81200 датащи(PDF) 43 Page - STMicroelectronics |
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STW81200 датащи(HTML) 43 Page - STMicroelectronics |
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43 / 58 page  DocID025943 Rev 7 43/58 STW81200 Circuit description 57 ST6 Register Address: STW81200BaseAddress + 0x06 Type: R/W Description: VCO Calibrator, Manual VCO control, DSM settings 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 RW RW RW RW RW RW RW RW RW RW RW RW [26] DITHERING: at ‘1’ enables dithering of DSM output sequence [25] CP_UP_OFF: for test purposes only; must be set to ‘0’ [24] CP_DN_OFF: for test purposes only; must be set to ‘0’ [23:22] DSM_ORDER: set the order of Delta-Sigma Modulator 00: (0) 3rd order DSM (recommended) 01: (1) 2nd order DSM 10: (2) 1st order DSM 11: (3) 4th order DSM [21] DSM_CLK_DISABLE: for test purposes only; must be set to ‘0’ [20] MAN_CALB_EN: enables manual VCO calibrator mode 0: automatic VCO calibration (VCO_SEL, VCO_WORD settings are ignored) 1: manual VCO calibration (VCO_SEL, VCO_WORD settings are used and the VCO calibration procedure is inhibited) [19:18] VCO_SEL: VCO selection bit 00: (0) VCO_HIGH 01: (1) VCO_LOW 10: (2) VCO_MID 11: (3) VCO_LOW [17:13] VCO_WORD: select specific VCO sub-band (range:0 to 31) [12] CAL_TEMP_COMP: at ‘1’ enables temperature compensation for VCO calibration procedure (to be used when PLL Lock condition is required on extremes thermal cycles) |
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