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Schematic Diagrams
Audio Codec
USB2.0 PORT
5V
D
[24,28,29]
USB_PWR_EN#
[24]
EC_CODEC_PD#
[8]
USB_PP6
[8]
USB_PN6
C
Sheet 23 of 47
Audio Codec
B
[10,17,28,33,36]
A
B - 24 Audio Codec
5
4
AUDIO CODEC CM6542
R279
0_04
AVDD18
BULK_1V8
C238
40 MIL
10u_6.3V_X5R_04
USB5V
V4V3
PD8
U12
40 MIL
5
1
A
C
VIN
VOUT
2
C446
C452
GND
1N914BWS
C259
[29]
SLEEVE_CONN
4
3
0.1u_6.3V_X5R_02
2.2u_6.3V_X5R_04
[29]
RING2_CON
EN#
OC#
10u_6.3V_X5R_04
SY6288D20AAC
[29]
MIC_DATA2
[29]
MIC_CLK2
SY6288D20AAC:
6-02-62882-9C0
uP7549UMA5-20:
6-02-75495-9C0
ADD D-MIC 3/10
C257
R328
0_04
*10p_25V_NPO_02
Del SPDIF 3/9
R329
*0_04
PC BEEP
FOR VOLUMN
ADJUST
1
GPIO_5
GPIO_4
GPIO_4
2
R327
*4.53K_1%_04
[24]
KBC_BEEP
GPIO_4
GPIO_3
3
GPIO_3
6-06-00543-021
R321
GPIO_7
4
*4.7K_04
GPIO_7
ADD PC BEEP 3/16
5
GPIO_6
SPI_MISO
6
SPI_MISO
SPI_MOSI
7
SPI_MOSI
SPI_CS0
8
SPI_CS0
SPI_SCK
9
SPI_SCK
GPIO_2
10
GPIO_2
R307
22_04
USB_DP
49
DGND
USB_DM
DEL ESD 3/10
R306
22_04
DVDD33
C261
C260
R313
R311
2.2K_04
2.2K_04
TEST
I2C_SCLK
I2C_SDAT
USB_DM
USB_DP
R319
10K_04
TEST
AUDIO AMP FOR SPEAKER
TPA2008D2
P2P BA20550
(TSSOP24)
3.3VS
PCBFootprint ( PDSO-G24 )
U33
AMP_EN_SPK
R568
C474
3
SHUTDOWN
100K_1%_02
*0.1u_6.3V_X5R_02
C462
2.2u_6.3V_X5R_04
22
6-06-75140-068
AMPGND
BYPASS
20 Mil
C
A
C460
0.1u_25V_X5R_04
24
SUSB#
[23]
HPOUT_R
RINN
D17
RB751S-40H
C461
0.1u_25V_X5R_04
23
MODIFY 3/9
AMPGND
RINP
D02 modify
6-01-07408-Q71
6
GPIO_3
PGNDL1
C
A
1
20210702
AMP_EN_SPK
D40
RB751S-40H
4
7
2
20 Mil
PGNDL2
U34
[23,24]
KBC_MUTE#
74AHC1G08GW
C483
0.1u_25V_X5R_04
1
[23]
HPOUT_L
LINN
Low mute!
3.3VS
Va u l e
C487
0.1u_25V_X5R_04
2
AMPGND
LINP
R531
10.2K_1%_04
14
On
5VS
VOLUME
R554
R534
15.8K_1%_04
15
AMPGND
NC
D02 modify
*330K_04
10
COSC
11
HP_EN_SPK_EN
R555
0_04
G
ROSC
Q36
H P AM P MUT E
2015/12/8
R577
TPA2008D2
2SK3018S3
C488
220p_50V_NPO_04
120K_04
AMPGND
R312
*20mil short-p
The volume control.the gain range is from
AMPGND
AMPGND
-80db(Vvolume=5V) to +20db(Vvolume=0V) with
64 steps precise control.
AMPGND
5
4
3
HPOUT_L
HPOUT_R
HPOUT_L
[23]
HPOUT_R
[23]
VNEG_NEG
C225
10u_6.3V_X5R_04
DVDD33
JD MODE
AUDG
C226
0.47u_6.3V_X5R_04
R249
220K_1%_04
GPIO_7
R510
0_04
HPOUT-JD
[29]
D1V8_NEG
34
R267
0_04
D1V8_NEG
BULK_1V8
33
VREF_PAD
C210
10u_6.3V_X5R_04
AUDG
C209
VREF_PAD
32
10u_6.3V_X5R_04
AGND
AUDG
31
VRP_PAD
C211
10u_6.3V_X5R_04
AUDG
VRP_PAD
CM6542
30
AVDD33
C212
10u_6.3V_X5R_04
AVDD33
AUDG
U11
29
D1V8
L3
1
2
HCB1005KF-121T20
C202
10u_6.3V_X5R_04
D1V8
MIC_BIAS
28
C213
*10u_6.3V_X5R_04
MIC_BIAS
AUDG
27
MIC_IN
MIC_IN
SP E C
3 / 1 2
MIC_SWOUT/VOLADJ
MIC_SWOUT/VOLADJ
26
MIC_SWOUT/VOLADJ
25
DVDD33
C220
10u_6.3V_X5R_04
DVDD33
SLEEVE_CONN
C219
0.1u_25V_X5R_04
RING2_CON
PD_R5V
R271
10K_04
C204
0.1u_25V_X5R_04
V4V3
BULK_1V8
R278
0_04
BULK_1V8
R215
0_04
C240
C239
AUDG
2.2u_6.3V_X5R_04
10u_6.3V_X5R_04
Analog_ground
Digital_ground
Tied at one point only under
Codec or near the Codec
AMP_5VS
6-19-31001-275
L17
HCB1608KF-121T30
5VS
C455
C456
C454
0.1u_6.3V_X5R_02
0.1u_6.3V_X5R_02
22u_6.3V_X5R_06
PCB Footprint = 85204-02L
AMPGND
AMPGND
AMPGND
P/N = 6-20-43130-102
C509
20
ROUTP
L23
HCB1005KF-121T20
ROUT+
50271-0020N-001
1000p_50V_X7R_04
ROUTP
6-19-31001-245
21
20 Mil
Front Speaker R / L
PVDDR1
1
ROUT-
2
17
ROUTN
L22
HCB1005KF-121T20
2W
ROUTN
J_SPKR1
16
20 Mil
PVDDR2
C508
Connect VAULE FOR
REFERENCE BY
18
1000p_50V_X7R_04
PCB Footprint = 85204-02L
PGNDR1
PROJECT
P/N = 6-20-43130-102
19
50271-0020N-001
PGNDR2
20 Mil
5
LOUTP
L6
HCB1005KF-121T20
LOUT+
LOUTP
1
2
4 Ohm Speaker
9
[23]
HPOUT_L
PVDDL1
J_SPKL1
4
PVDDL2
[23]
HPOUT_R
13
,
VDD
20 Mil
B Y
,
8
LOUTN
L7
HCB1005KF-121T20
LOUT-
LOUTN
12
AGND
C279
C282
1000p_50V_X7R_04
1000p_50V_X7R_04
AMPGND
6-02-20082-AL0
AMPGND
3
2
1
MIC_BIAS
R239
2.2K_04
MIC_IN
C214
10u_6.3V_X5R_04
ADD
3 / 1 8
R262
*0_04
AUDG
R270
0_04
3.3VS
HEADPHONE AMPLIFIER
HEADPHONE_L_DEPOP
[29]
3.3V
2. 2 V
EN
PIN H igh Le vel min:1. 4 V
HP_EN_SPK_EN
R473
22_04
C421
C417
C411
R476
10u_6.3V_X5R_04
0.1u_6.3V_X5R_02
200K_04
0.1u_6.3V_X5R_02
AUDG
AUDG
AUDG
U25
AUDG
AUDG
C447
10u_6.3V_X5R_06
HPOUT_L
HPOUT_L_IN
R556
*0_04
1
12
C448
2
INL-
PVDD
11
INL+
CP
10u_6.3V_X5R_06
3
10
C400
HPOUT_R
HPOUT_R_IN
INR+
PGND
4
SGND
9
INR-
CN
R186
*0_04
2.2u_6.3V_X5R_04
C401
17
4.7u_6.3V_X5R_04
R238
R237
EPAD
AUDG
R519
R518
0_04
0_04
SA8908
AUDG
3.3V
Gain
G0
G1
100K_04
100K_04
R209
10K_04
-6db
LOW
LOW
C422
4.7u_6.3V_X5R_04
R243
*10K_04
0db
HIGH
LOW
G1_SV3H706
R218
*10K_04
3db
LOW
HIGH
G0_SV3H706
AUDG
R233
10K_04
6db
HIGH
HIGH
AUDG
HEADPHONE_R_DEPOP
[29]
Title
Title
Title
[23] AUDIO CODEC_CM6542
[23] AUDIO CODEC_CM6542
[23] AUDIO CODEC_CM6542
Size
Size
Size
Document
Document
Document
Number
Number
Number
6-71-NLx0MU-D02
6-71-NLx0MU-D02
6-71-NLx0MU-D02
Custom
Custom
Custom
NLx0MU
NLx0MU
NLx0MU
Date:
Date:
Date:
Wednesday, August 18, 2021
Wednesday, August 18, 2021
Wednesday, August 18, 2021
2
1
D
C
R464
100K_1%_02
B
G
GPIO_7
Q32
2SK3018S3
GPIO_2
KBC_MUTE#
[23,24]
A
R e v
R e v
R e v
D02
D02
D02
Sheet
Sheet
Sheet
23
23
23
o f
o f
o f
47
47
47
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