ALC5642-VF
Datasheet
6.3. Filter/Reference
Table 3. Filter/Reference
Name
MICBIAS1
VREF1
VREF2
HPOFB
CPN1
Type Pin
Description
Characteristic Definition
O
O
O
-
4
Bias voltage output for microphone
Programmable analog DC output
4.7uF capacitor to analog ground
4.7uF capacitor to analog ground
Headphone ground
11 First internal reference voltage
12 Second internal reference voltage
25 Headphone reference ground
-
21 First charge pump bucket capacitor
20 First charge pump bucket capacitor
18 Second charge pump bucket capacitor
19 Second charge pump bucket capacitor
2.2uf capacitor to CPP1
2.2uf capacitor to CPN1
2.2uf capacitor to CPP2
2.2uf capacitor to CPN2
Total: 8 Pins
CPP1
-
CPN2
-
CPP2
-
6.4. Power/Ground
Table 4. Power/Ground
Name
MICVDD
AVDD
Type Pin
Description
Characteristic Definition
P
P
P
P
3
Analog power for MICBIAS
3.0V ~ 3.3V (Default 3.3V is recommended)
1.71V ~ 1.9V (Default 1.8V is recommended)
1.71V ~ 1.9V (Default 1.8V is recommended)
15 Analog power
10 Analog power
DACREF
AGND
9
Analog ground
Analog power for headphone charge
pump
1.71V ~ 1.9V (Default 1.8V is recommended)
CPVDD
CPGND
P
P
23
Analog ground for headphone charge
pump
22
CPVEE
CPVPP
P
P
27 Charge pump negative voltage output
24 Charge pump positive voltage output
Digital power for digital core.
2.2uf capacitor to analog ground
2.2uf capacitor to analog ground
1.15V~1.3V
Kept open if LDO1_EN is pulled high, or (Default open is recommended. Pull high
DCVDD
P
42
connected to external 1.2V power.
LDO1_EN to DBVDD to general 1.2V
DCVDD by internal LDO. It can be connected
to external 1.2V if LDO1_EN is pulled low.)
DBVDD
SPKVDDL
SPKVDDR
SPKGND/
DGND
P
P
P
43 Digital power for digital I/O buffer
Speaker AMP power for left channel
1.71V~3.3V (Default 1.8V is recommended)
3.0V~5.0V (Default 5V or 3.3V)
3.0V~5.0V (Default 5V or 3.3V)
Exposed-Pad
2
46 Speaker AMP power for right channel
Speaker AMP ground
49*
P
Digital ground
Total: 12 Pins
Multi-Channel Audio Hub/CODEC with embedded Voice
DSP and SounzRealTM Digital Sound Effect
10
Rev. 0.93
REALTEK [ Realtek Semiconductor Corp. ]
