SDA6000 Datasheet, PDF (270/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Peripherals
7.6.1 Power Down and Wake Up
As the power consumption of the ADC is quite high it should also be switched off during
idle mode. Due to some application requirements it is necessary to include the possibility
of generating an interrupt signal (ADWIC) as soon as the CADC (ANA0) input voltage
falls below a predefined level. Two different levels are available. The first one
corresponds to (fullscale-4 LSB) the second one to (fullscale-16 LSB). The actual level
can be selected by a control bit (ADWULE).
7.6.2 Register Description
ADCON
Reset Value: 0000_H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FS AD-
-
-
-
-
-
-
-
-
-
- ADC WUL -
-
-
-
DIFF E
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Bit
Function
FSADCDIFF
Selects FSADC input range
Selects input range of the Full Service ADC:
FSADCDIFF = 0: single-ended input
FSDACDIFF = 1: differential input
ADWULE
Defines threshold level for wake up
A special wake up unit has been implemented to allow a system wake-up
as soon as the analog input signal on pin ANA0 falls below a predefined
level. ADWULE defines this level.
ADWULE = 0: threshold level corresponds to fullscale-4LSB.
ADWULE = 1: threshold level corresponds to fullscale-16LSB.
ADDAT1
Reset Value: 0000_H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ADRES1
ADRES0
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Users Manual
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2000-06-15