Microchip Technology Audio Digital-to-Analog Converter Manual de usuario descargar pdf (Pagina 22)

Data Formats

z The DAC accepts 16-bit input data in two

formats:

− Signed (two’s complement)

− 0x7FFF = Most positive output voltage

− 0x0000 = Midpoint output voltage

− 0xFFFF = Value just below midpoint

− 0x8000 = Minimum output voltage

− Unsigned

− 0xFFFF = Most positive output voltage

− 0x8000 = Midpoint output voltage

− 0x7FFF = Value just below midpoint

− 0x0000 = Minimum output voltage

The DAC accepts data in two formats, signed and unsigned integers. An unsigned

16-bit value can range from 0x0000 to 0xFFFF. With 0x0000 being the absolute

minimum and 0xFFFF being the most positive value. A signed 16-bit value will

range from 0x8000 to 0x7FFF, where 0x7FFF is the most positive value. 0x0000

will represent the midpoint value and 0xFFFF is a value just below the midpoint.

The FORM bit in the DAC Control Register is where the user can select between

signed and unsigned Data input.

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Microchip Technology Audio Digital-to-Analog Converter Manual de usuario Pagina 22