LG C3400 Service Manual page 28

3.6.3 Auxiliary Section
1. This section includes an Automatic Frequency Control(AFC)DAC,voltage reference
buffers, an Auxiliary ADC,and light controllers.
• AFC DAC:13 bits
2. This section also contains AUX ADC and Voltage Reference
• IDAC:10 bits
• The Auxiliary ADC provides :
- Two differential inputs for temperature sensing.
- A differential input for the battery charger current sensor
AD6535
CSFS
Control
CSDI
Serial
Port
CSDO
AFC
DAC
REFTXCM
Voltage
Reference
Aux
ADC
Figure 3-14.AD6535 AUXILIARY SECTION
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3. TECHNICAL BRIEF
AFCDAC
REFBB
REFOUT
REFCHG
REF
TEMP1
TEMP2
AUXADC1
AUXADC2
AIN1P
AIN2P
BATTYPE
ISENSE
VBATSENSE
LIGHT1
Light
LIGHT2
Controllers
LIGHT3