TITLE
PROJECT
Lorry XU
Woody WU
CHECKED BY
DRAWN BY
OF
A
6
5
4
3
2
1
SHEET
A
B
C
D
1
2
3
4
5
6
D
C
B
Quectel Wireless Solutions
SIZE
VER
14
7
1.0
DATE
2019/12/5
EG21-G
A2
Reference Design
Audio Codec Design (ALC5616)
1. ALC5616 power-on sequence: DBVDD/I2C pull-up power/AVDD/DACREF/CPVDD -> MICVDD -> software initialization.
Notes:
2. ALC5616 power-off sequence: close codec function by software -> MICVDD -> DBVDD/I2C pull-up power/AVDD/DACREF/CPVDD.
3. EG21-G will automatically initialize the codec via I2C interface after it is turned on successfully, so all power supplies for the codec need to be powered on before that.
4. Pin AGND and DGND of ALC5616 are connected together through 0R resisitor R0703.
5. The maximum output power of the codec is 30mW when the headphone driver with 32Ω load is used.
2 IN1P/DMC_DAT
3 IN2P
4 IN2N/JD2
5
DACREF
6
AVDD
7
AG
ND
10
LOUTR/N
11
CPN2
12
CPP2
13
CPN1
14
CPP1
15
CPVDD
16
CPVPP
18
CPVREF
19
CPVEE
20
HPO_L
21 ADCDAT1
22 DACDAT1
23 LRCK1
26
SCL
27
SDA
28 GPIO1/IRQ1
29
DBVDD
30
DCVDD
31
M
ICVDD
32 MICBIAS1
8
VREF2
24 BCLK1
1 JD1
9
LOUTL/P
17
HPO_R
25 MCLK
33
DG
ND
U0501
ALC5616
C0504
4.7μF
C0505
4.7μF
C0506
100nF
R0503
0R
C0502
4.7μF
C0503
100nF
C
0511
2.2μF
C
0512
100nF
C
0507
4.7μF
C
0508
100nF
C
0510
2.2μF
C0514 2.2μF
C0516 2.2μF
C0513
4.7μF
R0507
0R
R0516
NM_10K
R0517
4.7K
R0518
4.7K
C0528
4.7μF
C0523
2.2μF
C0524
2.2μF
R0509
0R
R0511
0R
R0513
0R
R0515
0R
C0526
NM
C0525
NM
C0527
NM
C0515 2.2μF
C0517
2.2μF
R0514
1K
R0506
1.5K
R0505
1K
R0508
1.5K
C0519
10μF
R0502
0R
C0518
1μF
C0520
1μF
C0521
1μF
C0522
1μF
R0510
0R
R0512
0R
R0501
0R
R0504
0R
C
0509
N
M
_33pF
C0501
NM_33pF
R0519
0R
R0520
0R
VD
D
_3.3V
VDD_1
V
8
VDD_3.3V
[3,8]
I2C_SDA
[3,8]
I2C_SCL
VDD_1
V
8
VDD_1V8
[3,8] CODEC_PCM_OUT
[3,8]
CODEC_PCM_IN
[3,8] CODEC_PCM_CLK
[3,8] CODEC_PCM_SYNC
[7] MIC+
[7] MIC-
[8,9]
SPK_P
[8,9]
SPK_N
MICBIAS
[8,9] MIC_P
[8,9] MIC_N
MICBIAS
[7]
MIC+
[7]
MIC-
VDD_1V8
[8,9]
SPK_R
[8,9]
SPK_L
