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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AFE4490 데이터시트(PDF) 60 Page - Texas Instruments |
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AFE4490 데이터시트(HTML) 60 Page - Texas Instruments |
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60 / 69 page  AFE4400 SBAS601D – DECEMBER 2012 – REVISED MAY 2013 www.ti.com LED1VAL: LED1 Digital Sample Value Register (Address = 2Ch, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 LED1VAL[23:0] D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 LED1VAL[23:0] Bits D[23:0] LED1VAL[23:0]: LED1 digital value This register contains the digital value of the latest LED1 sample converted by the ADC. The ADC_RDY signal goes high each time that the contents of this register are updated. The host processor must readout this register before the next sample is converted by the AFE. ALED1VAL: Ambient LED1 Digital Sample Value Register (Address = 2Dh, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 ALED1VAL[23:0] D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 ALED1VAL[23:0] Bits D[23:0] ALED1VAL[23:0]: LED1 ambient digital value This register contains the digital value of the latest LED1 ambient sample converted by the ADC. The ADC_RDY signal goes high each time that the contents of this register are updated. The host processor must readout this register before the next sample is converted by the AFE. LED2-ALED2VAL: LED2-Ambient LED2 Digital Sample Value Register (Address = 2Eh, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 LED2-ALED2VAL[23:0] D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 LED2-ALED2VAL[23:0] Bits D[23:0] LED2-ALED2VAL[23:0]: (LED2 – LED2 ambient) digital value This register contains the digital value of the LED2 sample after the LED2 ambient is subtracted. The host processor must readout this register before the next sample is converted by the AFE. Note that this value is inverted when compared to waveforms shown in many publications. LED1-ALED1VAL: LED1-Ambient LED1 Digital Sample Value Register (Address = 2Fh, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 LED1-ALED1VAL[23:0] D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 LED1-ALED1VAL[23:0] Bits D[23:0] LED1-ALED1VAL[23:0]: (LED1 – LED1 ambient) digital value This register contains the digital value of the LED1 sample after the LED1 ambient is subtracted from it. The host processor must readout this register before the next sample is converted by the AFE. Note that this value is inverted when compared to waveforms shown in many publications. 60 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: AFE4400 |
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