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ADM1266ACPZ-R7 数据表(PDF) 47 Page - Analog Devices |
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ADM1266ACPZ-R7 数据表(HTML) 47 Page - Analog Devices |
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47 / 62 page ![]() Data Sheet ADM1266 Rev. A | Page 47 of 62 Table 60. Register 0xD5—DAC_CONFIGURATION (for Block W) Byte Byte Name R/W Description 0 Data length Block W Number of bytes of data for this block write. For a write, this value is from 3 to 19. 1 Starting Index Block W 00000 = DAC1. 00001 = DAC2. 00010 = DAC3. 00011 = DAC4. 00100 = DAC5. 00101 = DAC6. 00110 = DAC7. 00111 = DAC8. 01000 = DAC9. This value together with data length determine which DAC is configured. For example; if starting index is 5 and data length is 7, DAC6, DAC7, and DAC8 are configured. [19:2] Data Block W Data for DAC configuration. Table 61. Two Bytes of Data for Each DAC Configuration Bits Bit Name R/W Description [15:11] Reserved R Reserved. [10:6] DAC_MAPPING R/W These bits map the input pin that sets the DAC voltage for closed-loop margining. 00000 = open. 00001 = VH1. 00010 = VH2. 00011 = VH3. 00100 = VH4. 00101 = VP1. 00110 = VP2. 00111 = VP3. 01000 = VP4. 01001 = VP5. 01010 = VP6. 01011 = VP7. 01100 = VP8. 01101 = VP9. 01110 = VP10. 01111 = VP11. 10000 = VP12. 10001 = VP13 5 DAC_CLOSED_LOOP R/W This sets the two different closed-loop behaviors. 0 = closed loop is on continuously. 1 = closed loop regulates to the setpoint and stops. [4:2] Reserved R/W Reserved. [1:0] MARGIN_MODE R/W Margin mode. 00 = off. 01 = open loop. 10 = closed loop. 11 = reserved. |
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