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ADP1043AACPZ-RL Datasheet(PDF) 38 Page - Analog Devices |
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ADP1043AACPZ-RL Datasheet(HTML) 38 Page - Analog Devices |
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38 / 72 page  ADP1043A Rev. 0 | Page 38 of 72 VALUE REGISTERS Table 16. Register 0x10—First Flag ID Bits Name R/W Description [7:4] Reserved R Reserved. [3:0] First flag ID R These bits record the flag that was set first. Restarting the power supply resets this register. Reading this register also resets the register. Bit 3 Bit 2 Bit 1 Bit 0 Flag Error 0 0 0 0 None No flag 0 0 0 1 Register 0x01, Bit 3 VCORE OV 0 0 1 0 Register 0x01, Bit 2 VDD OV 0 0 1 1 Register 0x03, Bit 1 EEPROM CRC 0 1 0 0 Register 0x00, Bit 2 CS1 fast OCP 0 1 0 1 Register 0x00, Bit 1 CS1 accurate OCP 0 1 1 0 Register 0x00, Bit 0 CS2 accurate OCP 0 1 1 1 Register 0x01, Bit 1 Load OVP 1 0 0 0 Register 0x01, Bit 0 Local OVP 1 0 0 1 Register 0x02, Bit 0 FLAGIN 1 0 1 0 Register 0x02, Bit 7 OTP 1 0 1 1 Register 0x01, Bit 6 UVP 1 1 0 0 Register 0x01, Bit 5 Reverse voltage 1 1 0 1 Register 0x01, Bit 7 Voltage continuity 1 1 1 0 Register 0x02, Bit 5 Share bus 1 1 1 1 Register 0x03, Bit 2 ACSNS Table 17. Register 0x12—VS1/PWM Value (Input Voltage) Bits Name R/W Description [15:0] Input voltage value R This register contains the 16-bit input voltage information. Because the input voltage is normally on the other side of the isolation barrier from the ADP1043A, the part does not directly sense the input voltage. The input voltage is defined as the VS1 voltage divided by the PWM modulation. To read the input voltage information, this register must be read using two consecutive read operations. The eight bits of the first read return the eight MSBs of the input voltage information. The eight bits of the second read return the eight LSBs of the input voltage information. To translate this reading into the real input voltage, use the following equation: VINPUT = (Input_Voltage_Value_Reading/2643) × ((R1 + R2)/R2) where R1 and R2 are the external resistor divider values between the power supply output and the VS1 pin. This reading does not take into account an external turns ratio on the main transformer. Table 18. Register 0x13—CS1 Value (Input Current) Bits Name R/W Description [15:4] Input current value R This register contains the 12-bit input current information. This value is derived from a voltage measurement at the CS1 input. To read the input current information, this register must be read using two consecutive read operations. The eight bits of the first read return the eight MSBs of the input current information. The top four bits of the second read return the four LSBs of the input current information. The range of the CS1 input pin is from 0 V to 1.38 V. This value has 12 bits of resolution, which results in an LSB size of 337 μV. At 0 V input, the value in this register is 0 (0x000). At 1.3 V input, the value in this register is 3856 (0xF10). The nominal voltage at this pin is 1 V. At 1 V input, the value in this register is 2968 (0xB98). [3:0] Reserved R Reserved. Table 19. Register 0x14—CS1 × (VS1/PWM) Value (Input Power) Bits Name R/W Description [15:0] Input power value R This register contains the 16-bit input power information. This value is the product of the input voltage (VS1/PWM) multiplied by the input current (CS1), that is, (VS1/PWM) × CS1. To read the input power information, this register must be read using two consecutive read operations. The eight bits of the first read return the eight MSBs of the input power information. The eight bits of the second read return the eight LSBs of the input power information. |
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