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TDA18271HD 데이터시트(PDF) 40 Page - NXP Semiconductors |
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TDA18271HD 데이터시트(HTML) 40 Page - NXP Semiconductors |
40 / 70 page TDA18271HD_4 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 04 — 19 May 2009 40 of 70 NXP Semiconductors TDA18271HD Silicon Tuner IC 9.4.15 Flowchart TDA18271ThermometerRead Table 39. TDA18271CalcCALPLL Function Description Reference Description finds the correct values for the bytes CPD, CD1, CD2, CD3 and update the tuner registers Input freq_input, MS Table CAL_PLL_map Table 48 “CAL_PLL_map” Output - Fig 19. Flowchart TDA18271CalcCALPLL 001aah055 Tuner registers update Internal table I2C-bus Start TDA18271CalcCALPLL End TDA18271CalcCALPLL Div CAL_DIV CAL_POST_DIV freq_input CAL_PLL_map freq_input CAL_POST_DIV Div CAL_DIV CD1 = (CAL_DIV / 216) & 7Fh CD2 = (CAL_DIV / 28) CD3 = CAL_DIV - CPD … CD3 - - CPD = CAL_POST_DIV Find CAL_POST_DIV, Div = fLO(max) in CAL_PLL_map Update CPD byte CAL_DIV = (Div × freq_input × 27) / 125 Update CD1, CD2, CD3 bytes MS Table 40. TDA18271ThermometerRead Function Description Reference Description turns the on-chip temperature sensor ON, reads the current temperature on the die and then turns the temperature sensor OFF Input MS Table THERMOMETER_map Table 52 “THERMOMETER_map” Output TMVALUE (temperature in °C) |
유사한 부품 번호 - TDA18271HD_09 |
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유사한 설명 - TDA18271HD_09 |
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