APPOTECH CW6632B - 14 Saradc; Features; ADC Pin Mapping; SARADC Special Function Registers

14 SARADC 105
CW6632B Bluetooth 3.0 Audio Player SOC Version 1.0.0
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14 SARADC
14.1 Features
CW6632B provides an 11-channel moderate conversion speed and a moderate resolution 10-bit successive
approximated register Analog to Digital Converter (SARADC) for users to develop applications in the following
areas:
 Voice grade applications
 Audio applications requiring moderate performance
 Measurement requiring moderate performance and speed
SARADC conversion clock must be slower than 1 MHz
14.2 ADC Pin Mapping
Table 14-1 pin used
ADC Channel
Function
Description
ADC10
TP3
ADC9
TP2
ADC8
P26
Only for PIN detected, Not for ADKEY
ADC7
LDO Band GAP
Reference voltage 0.864V
ADC6
LDO in
1/2 Battery voltage
ADC5
P13
Normal ADC channel
ADC4
P30
Normal ADC channel
ADC3
P22
Normal ADC channel
ADC2
P14
Normal ADC channel
ADC1
P21
Normal ADC channel
ADC0
P33
Normal ADC channel
14.3 SARADC Special Function Registers
Register 14-1 ADCCON– SARADC control
Position
7
6
5
4
3
2
1
0
Name
ADCGO
EOC
TMREN
ADCTL
ADCEN
ADCSEL
Default
0
0
x
x
0
0
0
0
Access
R/W
RO
R/W
R/W
R/W
R/W
R/W
R/W
ADCGO: ADC Conversion Start
When read:
0 = Conversion finished
1 = Conversion not finished