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ADE5166 数据表(PDF) 117 Page - Analog Devices |
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ADE5166 数据表(HTML) 117 Page - Analog Devices |
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117 / 148 page  Preliminary Technical Data ADE5166/ADE5169/ADE5566/ADE5569 Rev. PrB | Page 117 of 148 Address RTCPTR[4:0] Mnemonic R/W Length Signed/ Unsigned Default Value Description 0x11 XTALG1 R/W 8 U 0 Least significant byte of frequency coefficient for crystal temperature compensation (see Table 128). 0x12 XTALG2 R/W 8 U 0 Most significant byte of frequency coefficient for crystal temperature compensation (see Table 129) Table 127. RTC Calibration Configuration Register (RTC_CAL, 0x0F) Bit Mnemonic Default Description 7 Reserved 0 This bit should be kept cleared for proper operation. 6 CAL_EN 0 RTC calibration enable output. CAL_EN Result 0 The RTC calibration output signal is disabled. 1 The RTC calibration output signal is enabled and present on the pins selected by the RTC_CAL[3:0] bits. 5 to 4 FSEL[1:0] 0 RTC calibration output frequency selection. FSEL[1:0] Frequency Calibration window 00 1 Hz 30.5 seconds 01 512 Hz 30.5 seconds 10 500 Hz 0.244 second 11 16.384kHz 0.244 second 3 RTC_P2P3 0 When this bit is set and the CAL_EN bit is set, the RTC output is present on P2.3/SDEN/TxD2. 2 RTC_P1P2 0 When this bit is set and the CAL_EN bit is set, the RTC output is present on P1.2/FP25. 1 RTC_P0P7 0 When this bit is set and the CAL_EN bit is set, the RTC output is present on P0.7/SS/T1/RxD2. 0 RTC_P0P5 0 When this bit is set and the CAL_EN bit is set, the RTC output is present on P0.5/MISO/ZX. Table 128. Crystal Gain Register MSB ( (XTALG2, 0x12) Bit Mnemonic Default Description 7 AUTOCOMPEN 0 Automatic crystal temperature compensation enable. Setting this bit to one enables the automatic compensation. 6 to 0 XTALGain[6:0] 0 Upper seven bits of crystal temperature coefficient. Table 129. Crystal Gain Register LSB (XTALG1, 0x11) Bit Mnemonic Default Description 7 to 0 XTALGain[14:7] 0 Least significant byte of crystal temperature coefficient. RTC CALENDAR The RTC has a full calendar taking into account leap years. The rollover of the date to increment the month is implemented following Table 130. Table 130. Month Rollover MONTH Register Rollover Value Estimated Month 0x01 31 January 0x02 28 or 29 days (see Table 131) February 0x03 31 March 0x04 30 April 0x05 31 May 0x06 30 June 0x07 31 July 0x08 31 August 0x09 30 September 0x0A 31 October 0x0B 30 November 0x0C 31 December |
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