General Procedures / Information
FaxCentre F110 12/04 6-61
GP 27 ADC for Temperature and High Voltage Control
Block diagram
The ADC08832 enables the Digicolor to measure the temperature of the drum and the transfer
voltage.
Figure 1
The signals DI and DO are tied together to use only one pin for programming and reading the
ADC.
The clock frequency is set to 2MHz, which is done setting the register EA_CLOCK_DIVIDE to 45.
In this case the conversion time will be 6,5us.
The signal CS_ADC is used to properly multiplex the smart card interface with the ADC interface.
When the ADC interface is active, the signal CS_ADC is set to 0. When the smart card interface
is active, the signal is set to 1.
Di
Digicolor 2
ADC08832
DI
DO
CLK
CS
ADC_DATA
ADC_CLK
ADC_nCS
To thermistor
To TTREAD
SW_ADC
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