Microchip Technology ADM00421 User Manual
Installation and Operation
© 2012 Microchip Technology Inc.
DS52057A-page 17
2.3.8
MCP3204 ADC Display Section
The MCP3201 12-bit ADC section displays the board’s measured V
DD
voltage and a
voltage between 0 and V
DD
/2, corresponding to the voltage value set by the
motherboard potentiometer.
FIGURE 2-6:
MCP3204 ADC VALUES DISPLAY
The remaining channels (channels 2 and 3) can also display custom user
measurements of voltages between 0V
measurements of voltages between 0V
–
2.5V (maximum).
2.4
MCP2210 TYPICAL USAGE SCENARIOS
The MCP2210 can be used in systems where an SPI bus is available. The MCP2210
device can be either the single master on the bus, or one of the masters sharing the
bus, if a proper master-access arbitration scheme is in place.
device can be either the single master on the bus, or one of the masters sharing the
bus, if a proper master-access arbitration scheme is in place.
In cases where the MCP2210 is the only master on the SPI bus, a typical usage
scenario is shown in Figure 2-7. The SPI bus links the SPI slave chips to the system,
while a few GPs (configured for chip select function) can be used as chip select lines.
scenario is shown in Figure 2-7. The SPI bus links the SPI slave chips to the system,
while a few GPs (configured for chip select function) can be used as chip select lines.
If SPI slave interrupt monitoring is required, the GP6 needs to be configured for its
dedicated function, in order to monitor the interrupts coming from the SPI slave chips.
dedicated function, in order to monitor the interrupts coming from the SPI slave chips.
The PC application will handle all the details necessary for data transfer between the
MCP2210 and the SPI slave devices.
MCP2210 and the SPI slave devices.
V
DD
voltage
value display
Custom voltage
value display
value display
Motherboard
potentiometer
settings display
(between 0 and
and V
potentiometer
settings display
(between 0 and
and V
DD
/2)