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AFE4490 Datasheet(PDF) 59 Page - Texas Instruments |
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AFE4490 Datasheet(HTML) 59 Page - Texas Instruments |
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59 / 69 page  AFE4400 www.ti.com SBAS601D – DECEMBER 2012 – REVISED MAY 2013 ALARM: Alarm Register (Address = 29h, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 0 0 0 0 0 0 0 0 0 0 0 0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 ALMPIN 0 0 0 0 0 0 0 0 0 0 0 CLKEN This register controls the Alarm pin functionality. Bits D[23:8] Must be '0' Bit D7 ALMPINCLKEN: Alarm pin clock enable 0 = Disables the monitoring of internal clocks; the PD_ALM and LED_ALM pins function as diagnostic fault alarm output pins (default after reset) 1 = Enables the monitoring of internal clocks; these clocks can be brought out on PD_ALM and LED_ALM selectively (depending on the value of the CLKALMPIN[2:0] register bits). Bits D[6:0] Must be '0' LED2VAL: LED2 Digital Sample Value Register (Address = 2Ah, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 LED2VAL[23:0] D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 LED2VAL[23:0] Bits D[23:0] LED2VAL[23:0]: LED2 digital value This register contains the digital value of the latest LED2 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. ALED2VAL: Ambient LED2 Digital Sample Value Register (Address = 2Bh, Reset Value = 0000h) D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 ALED2VAL[23:0] D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 ALED2VAL[23:0] Bits D[23:0] ALED2VAL[23:0]: LED2 ambient digital value This register contains the digital value of the latest LED2 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. Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 59 Product Folder Links: AFE4400 |
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