Rainbow-electronics MAX1230 Manual de usuario descargar pdf (Pagina 16)

MAX1226/MAX1228/MAX1230

12-Bit 300ksps ADCs with FIFO,

Temp Sensor, Internal Reference

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BIT NAME BIT FUNCTION

— 7 (MSB) Set to zero to select averaging register.

— 6 Set to zero to select averaging register.

— 5 Set to 1 to select averaging register.

AVGON 4 Set to 1 to turn averaging on. Set to zero to turn averaging off.

NAVG1 3 Configures the number of conversions for single-channel scans.

NAVG0 2 Configures the number of conversions for single-channel scans.

NSCAN1 1 Single-channel scan count. (Scan mode 10 only.)

NSCAN0 0 (LSB) Single-channel scan count. (Scan mode 10 only.)

Table 6. Averaging Register*

AVGON NAVG1 NAVG0

FUNCTION

0 x x Performs 1 conversion for each requested result.

1 0 0 Performs 4 conversions and returns the average for each requested result.

1 0 1 Performs 8 conversions and returns the average for each requested result.

1 1 0 Performs 16 conversions and returns the average for each requested result.

1 1 1 Performs 32 conversions and returns the average for each requested result.

NSCAN1 NSCAN0 FUNCTION (APPLIES ONLY IF SCAN MODE 10 IS SELECTED)

0 0 Scans channel N and returns 4 results.

0 1 Scans channel N and returns 8 results.

1 0 Scans channel N and returns 12 results.

1 1 Scans channel N and returns 16 results.

BIT NAME BIT FUNCTION

— 7 (MSB) Set to zero to select reset register.

— 6 Set to zero to select reset register.

— 5 Set to zero to select reset register.

— 4 Set to 1 to select reset register.

RESET 3 Set to zero to reset all registers. Set to 1 to clear the FIFO only.

x 2 Reserved. Don’t care.

x 1 Reserved. Don’t care.

x 0 (LSB) Reserved. Don’t care.

Table 7. Reset Register

*See below for bit details.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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Rainbow-electronics MAX1230 Manual de usuario Pagina 16