LG S5000 Service Manual page 31

3. TECHNICAL BRIEF
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
AD6537B
CSFS
Control
CSDI
Serial
CSDO
Figure 3-14. AD6537B AUXILIARY SECTION
AFC
DAC
Port
Voltage
Reference
Aux
ADC
REFTXCM
Controllers
- 32 -
AFCDAC
REFBB
REFOUT
REFCHG
REF
TEMP1
TEMP2
AUXADC1
AUXADC2
AIN1P
AIN2P
BATTYPE
ISENSE
VBATSENSE
LIGHT1
Light
LIGHT2
LIGHT3