Peripheral Simulation

For Analog Devices ADuC7020 — Digital/Analog Converter 3

Simulation support for this peripheral or feature is comprised of:

• Dialog boxes which display and allow you to change peripheral configuration.
• VTREGs (Virtual Target Registers) which support I/O with the peripheral.

These simulation capabilities are described below.

DAC 3 Dialog

The DAC 3 dialog displays and configures the Digital/Analog converter. The controls in this dialog are separated into several logical groups.

DAC Control Group

• DAC3CON (Control Register) displays and configures the D/A Converter control register.
• DACCLR (DAC Clear) is set to enable normal DAC operation. If reset, the data register of the DAC is set to zero.
• DACCLK (DAC Update Rate) is set to update the DAC using Timer 1. If reset, the core clock is used.
• DACBYP (Buffer Bypass) is set to bypass the output buffer. Resetting this bit buffers the DAC output.
• Range (DAC Range Setting) selects the voltage range.

DAC Data Group

• DAC3DAT (Data Register) contains the 12-bit digital data to be converted.

DAC Output Group

• DAC3 (Output Register) displays the converted analog voltage value.

GPIO Port 3 Dialog

The GPIO Port 3 Dialog controls the direction of the general purpose port pins. You may use the following controls to select and configure the GPIO port settings.

GPIO Configuration & Data Group

• GP3DAT (Configuration and Data Register) contains the Direction, Output and At Reset settings.
• Direction bits are checked to configure a pin for output or reset for input.
• Output checkboxes represent the data bits output.
• At Reset checkboxes represent the state of the port pins after a reset.
• Input checkboxes show the value of the data on an input port.

I/O Pins Group

• The I/O Pins section allows you to manually set or clear individual pins for this port.

GPIO Control Group

• GP3CON (Control Register) controls the function of each pin for this port.
• P3.x (Port 3 - Pins 0-7) selects the function to be assigned to this pin from a drop-down list.

DACx VTREG
Data Type: float

DAC0 Output Voltage