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AD7293 Datasheet(PDF) 33 Page - Analog Devices |
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AD7293 Datasheet(HTML) 33 Page - Analog Devices |
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33 / 78 page  Data Sheet AD7293 Rev. B | Page 33 of 78 RESULT 0/DAC INPUT (PAGE 0x00) Result 0/DAC input is located at Page 0x00. It contains result registers for the ADC, the temperature sensor, and the current sensor channel. The page also contains DAC input registers to set the output voltage. Table 24. Result 0/DAC Input (Page 0x0) Address (Hex) Name Byte1 Access Type1 Default Value1 0x00 No op N/A N/A 0x00 0x01 Page select pointer 1 R/W 0x00 0x02 Conversion command2 1 W N/A 0x03 Result 2 R 0x0000 0x04 DAC enable 1 R/W 0x00 0x05 GPIO 1 R/W 0x00 0x0C Device ID 2 R 0x0018 0x0F Software reset 2 R/W 0x0000 0x10 VIN0 2 R 0x0000 0x11 VIN1 2 R 0x0000 0x12 VIN2 2 R 0x0000 0x13 VIN3 2 R 0x0000 0x20 TSENSEINT 2 R 0x0000 0x21 TSENSED0 2 R 0x0000 0x22 TSENSED1 2 R 0x0000 0x28 ISENSE0 2 R 0x0000 0x29 ISENSE1 2 R 0x0000 0x2A ISENSE2 2 R 0x0000 0x2B ISENSE3 2 R 0x0000 0x30 UNI-VOUT0 2 R/W 0x0000 0x31 UNI-VOUT1 2 R/W 0x0000 0x32 UNI-VOUT2 2 R/W 0x0000 0x33 UNI-VOUT3 2 R/W 0x0000 0x34 BI-VOUT0 2 R/W 0x0000 0x35 BI-VOUT1 2 R/W 0x0000 0x36 BI-VOUT2 2 R/W 0x0000 0x37 BI-VOUT3 2 R/W 0x0000 1 N/A means not applicable. 2 Not a physical register. Voltage Input (VINx) Result Registers (Register 0x10 to Register 0x13) These registers store the 12-bit ADC results from the four input channels. In single-ended mode, the LSB size is REFADC/4096 when the 0 V to REFADC range is selected, 2 × REFADC/4096 when the 0 V to 2 × REFADC range is selected, and 4 × REFADC/4096 when the 0 V to 4 × REFADC range is selected (which is the default value). REFADC = 1.25 V. See the ADC Transfer Functions section for more information. See Table 25 for more information. Temperature Sensor (TSENSEINT and TSENSEDx) Result Registers (Register 0x20 to Register 0x22) These registers store the 12-bit ADC results from the three temperature sensor channels. 1 LSB = 0.125°C. See Table 26 for more information. Current Sensor (ISENSEx) Result Registers (Register 0x28 to Register 0x2B) These registers store the 12-bit ADC results from the four current sensor channels. See Table 25 for more information. DAC Input (UNI-VOUTx and BI-VOUTx) Registers (Register 0x30 to Register 0x37) Writing to these register addresses sets the 12-bit DAC output voltage codes, as shown in Table 27. If the load bit is set to 1, the device waits for the DAC load pin (GPIO7/LDAC) before loading the voltage codes onto the DACs rather than immediately after the write operation. If the copy bit is set to 1, writing to any of the four DAC registers (unipolar and bipolar are grouped separately) sets all the other DAC registers to the same value. While reading back the DAC result registers, only the 12-bit internal DAC output register value is visible to the user. Bits[D3:D0] read 0 irrespective of the status of the copy and load bits. Table 25. Voltage Input (Register 0x10 to Register 0x13) and Current Sensor (Register 0x28 to Register 0x2B) Result Registers MSB LSB D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 [D3:D0] B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 Reserved |
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