alc262w-vd2-gr Realtek Semiconductor Corporation, alc262w-vd2-gr Datasheet - Page 82

• Manufacturer Part Number: alc262w-vd2-gr
• Description: 4-channel Dac And 6-channel Adc High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

ALC262 Series
Datasheet
10. Application Notes
10.1. Application Circuit
Please contact Realtek for the latest application circuits. To get the best compatibility in hardware design
and software driver, any modification should be confirmed by Realtek. Realtek may upload the latest
application circuits onto our web site (www.realtek.com.tw) without modifying this datasheet.
10.2. Volume Control Via External Variable Resistor
The input range of DCVOL is from GND to AVDD. A 5-bit resolution ADC converts the DC level on the
variable resistor into 32 steps for the Volume knob. DC level changes will be reflected to software to
control the master volume.
ALC262
AVDD=5V
5-bit
Variable
DCVOL (Pin 33)
ADC
Resistor
Volume Code [4:0]
+5V: DCVOL=31
0V: DCVOL=0
Figure 23. Volume Control by External Variable Resistor
4-Ch DAC and 6-Ch ADC High Definition Audio Code
73
Track ID: JATR-1076-21
Rev. 1.9