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Table of Contents
User’s Guide
TAS6422E-Q1 EVM
ABSTRACT
This manual describes the operations of the TAS6422EQ1EVM. The TAS6422EQ1EVM is a stand-alone EVM.
The PurePath™ Control Console 3 GUI (PPC3) is used to initialize and operate the EVM. The main topics of this
document are:
• Hardware implementation and descriptions
• Software implementation and descriptions
• TAS6422E EVM operations (hardware and software)
Required equipment and accessories:
1. TAS6422E EVM
2. USB A male to micro B male cable
3. 1-2 resistive loads or speaker loads
4. 2-4 pair of wires stripped both ends
5. 2-mm slotted screwdriver
6. Optical audio source (optional)
7. Optical SPDIF cable (optional)
8. Desktop or laptop PC with Microsoft® Windows® 7 operating system
Table of Contents
1 Trademarks..............................................................................................................................................................................1
2 Hardware Overview................................................................................................................................................................ 2
3 Software Overview..................................................................................................................................................................4
4 Board Layouts, Bill of Materials, and Schematic...............................................................................................................20
5 Revision History................................................................................................................................................................... 29
List of Tables
Table 4-1. TAS6422EQ1EVM Bill of Materials........................................................................................................................... 26
1 Trademarks
PurePath™ are trademarks of Texas Instruments.
Microsoft® and Windows® are registered trademarks of Microsoft Corporation.
All trademarks are the property of their respective owners.
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2 Hardware Overview
2.1 TAS6422E Evaluation Module Description
The TAS6422E-Q1 EVM is a stand-alone EVM. It has single power supply input, USB control via PurePath
Control Console 3 (PPC3) and two digital (I2S) audio input options. See the EVM block diagram in Figure 2-1.
Figure 2-1. TAS6422E-Q1 EVM
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Hardware Overview
The block diagram shows the TAS6422E EVM signal flow.
PVDD
4.5 Vdc to 26.4 Vdc
Input Power
Connector
Jumper
VBAT
4.5 Vdc to 18 Vdc
3.3 Vdc LDO
PVDD
SPDIF Power Switch
3.3 Vdc
VBAT
Audio Input
SPDIF
Optical
DIR9001
I2S
Mux
I2S input
Connectors
XMOS Enable Switch
2nd order
LC Filters
I2S
Speaker
Outputs
TAS6422E-Q1
Fault
Micro
USB
XMOS
I2C and USB Audio
I2C
/STBY
Standby Switch
Mute Switch
Mute
Figure 2-2. EVM Block Diagram
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Software Overview
3 Software Overview
3.1 PurePath™ Console 3 (PPC3) Access and Description
The PPC3 is a server-based tool. Access can be requested on http://www.ti.com/tool/PUREPATHCONSOLE.
Once approval is given, go to www.ti.com/mysecuresoftware to download the software. After login, the user will
see this web page with a similar list of software products available for download.
Figure 3-1. PPC3 Download Window
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Run the installation program. Also download the PPC3 User Manual (SLOU408) for further instructions. The
following window is displayed when first running PPC3.
Figure 3-2. PPC3 Window
When the window in Figure 3-2 is displayed, click on “sign in” to see TAS6422E EVM application. All of the apps
shown below may not be displayed for the user.
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Click on TAS6422E App box to download TAS6422E application. Installation window will pop up, then click
“Install”.
TAS6422E EVM box will appear in “Installed EVM Apps” section, see Figure 3-3. Click on TAS6422E box to
launch TAS6422E App.
Figure 3-3. Available Apps Window
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3.2 PurePath™ Console 3 – TAS6422E EVM Home Window
When the TAS6422E EVM PPC3 is launched, the Home Window is shown. If the EVM is powered on and the
USB is connected to the PC, the Home Window will display “Connect” box in the bottom right hand corner. If the
EVM is not powered on or the USB is not connected, only “TAS6422E EVM – Offline” is displayed.
Figure 3-4. PPC3 Window
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There are three windows available with the TAS6422E EVM PPC3: Home Window, Register Map Window and
Device Monitor and Control Window.
Figure 3-5. TAS6422E EVM Home Window
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3.3 PurePath™ Console 3 – TAS6422E EVM Register Map Window
When click on Register Map Box on the Home Window, the Register Map Window is displayed. The Register
Map indicates the current setting of all the registers in TAS6422E.
Figure 3-6. TAS6422E EVM Register Map Window
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3.4 PurePath™ Console 3 – TAS6422E EVM Monitor and Control Window
When click on Device Monitor and Control Box on the Home Window, the Device Monitor and Control Window is
displayed.
Figure 3-7. TAS6422E EVM Device Monitor and Control Window
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3.5 TAS6422E EVM Start Up
This section describes the TAS6422E start-up procedure. Have the equipment and accessories listed on the first
page of this document available.
3.5.1 TAS6422E EVM Setup
Hardware and software connections:
• Desk top or laptop PC running Windows 7. Open PPC3 GUI.
• Connect 14.4 VDC PSU to TAS6422E EVM
• Connect speakers or resistive loads to TAS6422E EVM
• Connect USB micro cable from PC to the EVM
• Set the switches (SPDIF, STANDBY, MUTE) to up positions
• Turn on the PSU
• Audio source: This can be a DVD player with optical SPDIF cable or Windows Media Player from PC
• At this point, 3.3 V LED, USB-LOCK LED and SPDIF-LOCK LED (if optical SPDIF is used) are on.
• If the SPDIF LED is not on, the default I2S input is the USB audio source.
• On the PPC3 window, launch TAS6422E EVM application
• The audio can be streamed now to the speakers. Go to the GUI and click on “Device Monitor & Control” box.
Click on play button located on the top right of the window.
• The following sections describe in detail the register settings of TAS6422E.
Figure 3-8. TAS6422E EVM Connection
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3.5.2 TAS6422E Settings on Device Monitor and Control Window
The TAS6422E Register Map window is for reference. Most of the register settings are done on the Device
Monitor and Control window
Click on “CONNECT” button on the bottom left corner of the TAS6422E EVM application window, see Figure 3-9.
The LED next to the TAS6422E EVM changes from gray to green and the “CONNECT” button changes to
“DISCONNECT” button.
Click on the TAS6422E Device Monitor and Control box. The following window is displayed.
Figure 3-9. Device Monitor and Control Window
This window has 6 major sections: Global Control Section, Channel Control Section, Miscellaneous Control
Section, Faults and Warnings Section, AC Load Diagnostics Section and DC Load Diagnostics Section.
3.5.2.1 Global Control Section
The Hi-Z, Mute and Unmute buttons with the gray background controls all 2 channels at the same time. When
Hi-Z is selected, all 2 channels are put in Hi-Z. The display for each channel in the channel control section will
reflect these buttons selections.
The Mute Pin button is the GPIO pin controlling the mute function of the device.
The Standby button is the GPIO pin controlling the standby function of the device.
The Reset button is software reset. This will put the device back in default settings.
Figure 3-10. Global Control Section
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3.5.2.2 Channel Control Section
Each channel has the same setting selections: Hi-Z, Mute, Play, Volume, Line-out mode and Speaker mode.
The drop down menu allows user to select either Hi-Z, Mute or Play state of each channel.
The volume slide controls the digital gain of each channel.
The default setting for each channel is speaker mode. If line-out is used, select Line Output button.
Figure 3-11. Channel Control Section
3.5.2.3 Miscellaneous Control Section
There are miscellaneous settings that are available on the GUI for easy access.
OSR is oversampling bit. For lower idle noise 64X OSR is set as default. For wider bandwidth, 128X OSR can be
used. 64X OSR is recommended.
TAS6422E supports parallel Bridge-Tied Load. Before setting a set of channels to PBTL mode, connect the (+)
terminals as PBTL channel (+) and the (-) terminals as PBTL channel (-). Then connect the speaker (+) to the
PBTL channel (+) and connect the speaker (-) to the PBTL channel (-).
The over-current has two levels. The lower level is 1. The default is level 2. When running at lower output
current, OC level can be set to level1.
I2S and TDM are automatically detected. Use the pull down menu from “Input Format” box to manually select the
audio format. If sampling frequency is greater than 48 kHz, select 96 kHz from the “Input FS” pull down.
Over-temperature warning can be programmable, use the pull down menu to choose the OTW temperature. The
default setting is 120°C.
The output switching frequency (FSW) or Pulse Width Modulation frequency (PWM) is set at 2.1 MHz. The pulldown menu on the PWM FRQ box is used to choose a different FSW. LC value should be adjusted when FSW is
changed.
The offset phase for each channel is set at 45 degrees. This helps lower the ripple current on the power supply
as not all the channels switch at the same time. To choose a different phase offset, use the pull-down menu on
the “Phase” box.
There are four gain settings in TAS6422E: low, normal, high and maximum. The default setting is high. However,
the recommended setting is normal for lower noise performance for driving speakers at
14.4 VDC. The gain setting is selectable via the drop down menu in the ”Gain” box.
The volume slew rate is measured with sampling frequency. The default setting is 1 period of sampling
frequency (FSYNC or FS). This rate is selectable from 1 to 8 sampling periods with the drop down menu under
“Vol Rate” box.
The spread spectrum modulation can be selected to be enabled or disabled.
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Figure 3-12. Miscellaneous Control Section
3.5.2.4 Faults and Warnings Section
The top right buttons on this box serve as controlling and monitoring faults.
Clip enable route the clip detection bit to the warning pin. This is displayed as yellow LED on the EVM.
Thermal enable route the over-temperature warning bit to the warning pin. This is display as the same yellow
LED on the EVM.
Clear button clears all the faults and warnings.
Read button manually read the faults and warnings.
Figure 3-13. Faults and Warnings Section
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3.5.2.5 AC Load Diagnostics Section
AC load diagnostics report speaker impedance and phase. The diagnostics can be performed with one or all four
channels.
Select the correct output impedance and click start. Follow the pop up instructions to complete the load
diagnostics run.
Note
Make sure to set the digital input to 0 dBFS (100% full-scale). If the sine wave is provided from the
USB audio, turn the audio media volume and PC sound card volume to maximum.
Click on the “flip” icon located on the top right of the AC load diagnostics box to see the results.
Figure 3-14. AC Load Diagnostics Section
3.5.2.6 DC Load Diagnostics Section
The DC load diagnostics report if a channel is short to power, short to ground, short to load or open.
Select the impedance of the load from 0.5 to 5 Ω. Click start and then click the “flip” on the top right of the box to
view results.
If a channel is selected as a line-out, click on “LO ENA LD” to enable line-out load diagnostics.
“Retry” box is used when DC load diagnostics are run more than one time.
DC load diagnostics can be aborted by click on the “Abort LD” box.
Figure 3-15. DC Load Diagnostics Section
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3.5.3 TAS6422E Settings on Register Map Window
The register map can be sorted either alphabetically or numerically (register number).
Figure 3-16. Register Map Window
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When a register is selected, the hex value along with the individual bit value is displayed. The name and
description for each bit are shown to the right in the "Fields" box.
Figure 3-17. Register Map Window - Expanding
Double click on any bit, the bit will change state. This state is executed at the end of the click.
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3.5.4 I2C Window
The PPC3 has an I2C monitor and also configuration program options.
When this window is first open, the round button is green. To record I2C commands, click on this button and it
will turn red. The recording can be saved for later used by clicking the save icon.
The I2C commands can also be copied to clip board by clicking the icon next to trash bin icon.
Figure 3-18. I2C Window – I2C Logging
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A set of I2C commands can be loaded and executed from this window. On the top right corner, click on “I/O”
button to display the above window. Write I2C commands here or open an existing *.cfg file then click “Execute”
button on the bottom left corner. The I2C commands are sent to the device when the “Execute” button is
pressed.
Figure 3-19. I2C Window – Sending I2C Commands
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Board Layouts, Bill of Materials, and Schematic
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4 Board Layouts, Bill of Materials, and Schematic
4.1 TAS6422E EVM Layouts
Figure 4-1. TAS6422E EVM Top
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Figure 4-2. TAS6422E EVM Bottom
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4.2 TAS6422E EVM Schematic
1.0V
3.3V
1.0V
1.0V
1.0V
USB
1.0V
1.0V
3.3V
3.3V
3.3V
U2E
44
105
3.3V
USB_VDD33
OTP_VCC
6
14
19
29
42
VDDIOL
VDDIOL
VDDIOL
VDDIOL
VDDIOL
52
67
78
83
92
VDDIOR
VDDIOR
VDDIOR
VDDIOR
VDDIOR
110
111
VDDIOT
VDDIOT
3.3V
50
65
11
16
17
24
36
41
56
60
73
80
81
87
101
102
120
126
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
PLL_AVDD
103
PLL_AGND
104
PAD
129
C20
0.1uF
50V
C22
0.1uF
50V
C23
0.1uF
50V
GND
GND
GND
GND
1.0V
1.0V
1.0V
1.0V
1.0V
C29
0.1uF
50V
R13
4.75
C21
0.1uF
50V
GND
1.0V
49
USB_VDD
NC
NC
C19
0.1uF
50V
GND
C31
0.1uF
50V
GND
1.0V
C39
50V
0.1uF
C30
0.1uF
50V
GND
1.0V
C40
0.1uF
50V
GND
1.0V
C41
0.1uF
50V
C32
0.1uF
50V
U2B
U2A
C33
0.1uF
50V
C43
0.1uF
50V
XEF216-512-TQ128-C20
GND
GND
GND
GND
VBUS
VBUS-IN
D-
2
USB-DM
D+
3
USB-DP
ID
4
USB-ID
GND
5
U2C
46
47
R24
10.0k
45
43
8
7
6
48
GND-USB
C46
2.2uF
16V
L3
USB_DP
USB_DM
USB_VBUS
USB_ID
USB_RTUNE
XEF216-512-TQ128-C20
R26
100k
C47
50V
0.1uF
X1D14
X1D15
X1D16
X1D17
X1D18
X1D19
X1D20
X1D21
51
53
22
23
25
26
54
55
X0D00
X0D01
X0D02
X0D03
X0D04
X0D05
X0D06
X0D07
X0D08
X0D09
X0D10
X0D11
X0D12
X0D13
X0D14
X0D15
X0D16
X0D17
X0D18
X0D19
X0D20
X0D21
X0D22
X0D23
X0D24
X0D25
X0D26
X0D27
X0D28
X0D29
X0D30
X0D31
X0D32
X0D33
X0D34
X0D35
X0D36
X0D37
X0D38
X0D39
X0D40
X0D41
X0D42
X0D43
3.3V
3.3V
R19
10.0k
R20
680
D3
USB RDY
J3
1
85
86
72
74
75
76
77
79
82
84
121
122
GND
9
10
11
GND
X1D00
X1D01
X1D02
X1D03
X1D04
X1D05
X1D06
X1D07
X1D08
X1D09
X1D10
X1D11
GND
1.0V
C42
0.1uF
50V
R27
43.2
X1D26
X1D27
X1D28
X1D29
X1D30
X1D31
X1D32
X1D33
112
113
114
115
116
117
118
119
X1D35
X1D36
X1D37
X1D38
X1D39
X1D40
X1D41
X1D42
X1D43
13
15
18
20
21
106
107
108
109
Blue
R23
X-MCLK
33.2
FROM
SWITCH
GND
GND
GND
SCL
SDA
3.3V
R14
33.2
3.3V
R15
47.0k
X-MCLK
3.3V
R16
47.0k
33.2
33.2
1
2
3
4
5
6
X-TCK
X-TMS
X-TDI
X-TDO
X-TRSTN
VDD
1
OE/STANDBY
OUT
GND
3
2
R28
4
2
3
X-24M
1.8V 3.3V
X-TCK
X-TMS
X-TDI
X-TDO
3.3V
1
8
R25
OE
A1
A2
VCCA
VCCB
B1
B2
R17
47.0k
GND
3.3V
3.3V
C34
50V
0.1uF
R18
47.0k
C35
50V
0.1uF
GND
GND
3.3V
3.3V
C36
50V
0.1uF
GND
C37
50V
0.1uF
GND
C38
50V
0.1uF
GND
C45
50V
0.1uF
GND
X-LRCK
X-BCLK
X-DOUT
X-MCLK
GND
5
GND
3.3V
SDA
SCL
3.3V
U5
3
VDD
4
VCTR
1
XIN/CLK
VDDOUT
VDDOUT
14
XOUT
2
13
12
S0
SDA/S1
SCL/S2
SENSE_OUT
4
CT
5
GND
2
Y1
11
R29
33.2
X-BCLK
9
R30
33.2
X-MCLK
Y3
8
GND
GND
GND
C48
470pF
50V
5
10
GND
CDCE913PWR
R34
10.2k
X-TRSTN
1A
2
GND
3
2A
SN74LVC2G07DSFR
GND
U2D
U7
1
GND
R33
10.2k
3.3V
TPS3897ADRYR
GND
6
7
Y2
GND
VCC
GND
3.3V
X-DOUT
33.2
7
6
3.3V
R32
10.2k
U6
ENABLE
GND
3.3V
TO I2S MUX
SN74AVC2T244DQER
GND
3.3V
6
GND
C44
50V
0.1uF
U4
GND
JTAG
R35
51.0k
C28
50V
0.1uF
3.3V
GND
X-24M
33.2
24MHz
1.0V
1
C27
50V
0.1uF
GND
X-LRCK
X-BCLK
1.8V
U3
4
SENSE
C26
50V
0.1uF
3.3V
3.3V
X-SPI-SS0
X-SPI-SS1
X-SPI-SS2
X-SPI-SS3
R21
R22
C25
50V
0.1uF
3.3V
3.3V
USB-EN
3
C24
50V
0.1uF
I2C BUS
X-QSPI-CS
SCL
SDA
3.3V
GND
J4
R31
25.5k
30
27
37
38
31
33
34
35
39
40
28
32
62
63
57
58
68
69
70
71
59
61
64
66
88
89
93
94
96
98
99
100
95
97
90
91
3
4
5
7
8
9
10
12
3.3V
XEF216-512-TQ128-C20
XEF216-512-TQ128-C20
GND
R10
R11
R12
1.00k 2.20k 2.20k
1Y
6
VCC
5
2Y
4
R36
0
X-24M
X-RSTN
125
124
CLK
RST
X-TCK
X-TMS
X-TDI
X-TDO
128
127
2
1
123
TCK
TMS
TDI
TDO
TRST
3.3V
C49
50V
0.1uF
3.3V
C50
50V
0.1uF
3.3V
C51
50V
0.1uF
3.3V
3.3V
C52
50V
0.1uF
C53
50V
0.1uF
1.8V
C54
50V
0.1uF
1.8V
C55
50V
0.1uF
XEF216-512-TQ128-C20
GND
GND
GND
GND
GND
GND
GND
GND
Figure 4-3. Schematic (Page 1)
22
TAS6422E-Q1 EVM
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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Board Layouts, Bill of Materials, and Schematic
SPDIF
FROM XMOS
X-MCLK
X-BCLK
X-LRCK
X-DOUT
U8
OPTO IN
3.3V-SPDIF
C56
VCC
1
GND
2
VOUT
3
0.1uF
GND
16V
R37
49.9
U9
4
5
NC
NC
OPTICAL
SPDIF
IN
C57
10pF
50V
X-MCLK
1
A
VCC
8
MCLK-SPDIF
2
B
Y
5
6
A/B
Y
3
4
GND
G
7
GND
GND
R39
2
4
1
3
G
G
RXIN
C58
18pF
50V
GND
C59
18pF
50V
R43
470
GND
S3
SPDIF POWER
20
XTI
7
XTO
24
5
3.3V-SPDIF
3.3V-SPDIF
GND
RXIN
8
GND
3
2
R40
U12
12.288MHz
3.3V
VCC
VDD
3.3V-SPDIF
5
4
1
R46
C64
10uF
10V
C65
10uF
10V
C66
16V
0.1uF
4.99k
C67
16V
0.1uF
25
26
GND
GND
GND
3.3V-SPDIF
FMT0
FMT1
21
RST
13
14
PSCK0
PSCK1
GND
GND
GND
SCKO
BCKO
LRKCO
DOUT
4
11
10
12
AUDIO
FSOUT0
FSOUT1
CLKST
COUT
UOUT
EMPH
BFRAME
CKSEL
ERROR
1
2
3
9
15
16
17
18
28
27
RSV
19
X-BCLK
SCLK-SPDIF
SCLK-SPDIF
49.9
R42
LRCLK-SPDIF
X-LRCK
49.9
LRCLK-SPDIF
C60
10pF
50V
C61
10pF
50V
C62
10pF
50V
C63
10pF
50V
100
R48
GND
GND
GND
3.3V-SPDIF
U14
VIN
VIN
4
VBIAS
3
ON
VOUT
VOUT
8
7
22
23
6
SDOUT-SPDIF
C68
4700pF
25V
R50
681
Q1
CT
6
GND
PAD
5
9
C70
16V
0.1uF
C72
100pF
GND
50V
C71
1uF
6.3V
GND
R53
R55
R56
DNP
4.99k
4.99k
4.99k
Y
5
A/B
Y
3
4
GND
G
7
R41
1
J6
2
49.9
SCLK
3
SCLK
GND
SN74LVC2G157DCUR
U11
1
A
VCC
8
2
B
Y
5
6
A/B
Y
3
GND
G
7
R45
1
J7
2
49.9
FSYNC
3
FSYNC
GND
SN74LVC2G157DCUR
U13
1
A
VCC
8
2
B
Y
5
6
A/B
Y
3
4
GND
G
7
R49
1
J8
2
49.9
SDIN
3
SDIN1
GND
SN74LVC2G157DCUR
GND
C69
0.068uF
50V
R54
10.0k
3.3V
GND
GND
C73
0.1uF
16V
GND
TPS22965TDSGRQ1
C77
1uF
6.3V
MCLK
3
GND
GND
R52
DNP
4.99k
B
3.3V-SPDIF
FILT
AGND
DGND
I2S-SEL
3.3V-SPDIF
1
2
2
6
GND
X-DOUT
GND
3.3V
8
GND
4.99k
DIR9001IPWQ1
R51
100k
VCC
4
R47
2
GND
A
GND
SDOUT-SPDIF
J5
MCLK
1
49.9
R44
1
49.9
SN74LVC2G157DCUR
U10
MCLK-SPDIF
49.9
Y1
I2S
R38
D4
SPDIF LOCK
Blue
GND
R57
360
GND
C74
0.1uF
16V
GND
C75
0.1uF
16V
GND
C76
0.1uF
16V
GND
GND
GND
Figure 4-4. Schematic (Page 2)
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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TAS6422E-Q1 EVM
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23
Board Layouts, Bill of Materials, and Schematic
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PVDD
C82
1uF
50V
PVDD
C93
0.1uF
50V
C94
1uF
50V
PVDD
C95
0.1uF
50V
C4
1uF
50V
C5
0.1uF
50V
L1
OUT2P
GND
GND
GND
GND
GND
GND
3.3uH
C7
1µF
50V
C8
0.01uF
50V
3.3V
1
U1
2
29
30
42
43
C1
1µF
25V
PVDD
PVDD
PVDD
PVDD
PVDD
OUT_2P
40
OUT2P
L2
GND
GND
OUT2M
BST_2P
BST_2M
41
16V
37
16V
C6
2.2µF
C9
2.2µF
3.3uH
C13
1µF
50V
C14
0.01uF
50V
GND
19
PVDD VBAT
3
AREF
C11
0.1uF
50V
C96
1µF
C10
1µF
J13
VBAT
4
5
6
VDD
OUT_2M
VBAT
OUT_1P
AREF
BST_1P
VREG
BST_1M
OUT_1M
C12
1µF
C15
2.2µF
I2C
J14
1
2
8
9
OUT2M
OUT1P
35
16V
31
16V
32
GND
I2S DATA
I2S MCLK
FSYNC
SDIN
I2C
SCL
SDA
I2C_ADDR0
3.3V
ADDRESS SELECT
ADDR1 ADDR0 I2C ADDR
L
L
H
H
0xD4/0xD5
0xD6/0xD7
0xD8/0xD9
0xDA/0xDB
L
H
L
H
R2
DNP
4.99k
R3
R4
DNP
4.99k
R5
4.99k
MCLK
12
SCLK
13
FSYNC
14
SDIN
15
SCL
20
SDA
21
I2C_ADDR0
I2C_ADDR1
22
23
STANDBY
MUTE
FAULT
WARN
24
25
26
27
GND
GND
C99
1µF
50V
C100
0.01uF
50V
OUT1M
L8
AVDD
GND
GND
OUTPUT
OUT1M
3.3uH
GVDD
TEST
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
SCLK
3.3uH
C97
2.2µF
C98
2.2µF
3
16
L7
OUT1P
VCOM
GND
AVSS
38
34
MCLK
SCLK
FSYNC
SDIN1
SCL
GND
GND
GND
GND
GND
GND
GND
GND
GND
SDA
I2C_ADDR0
I2C_ADDR1
STANDBY
MUTE
FAULT
WARN
AVSS
10
44
45
47
48
50
51
53
54
49
52
55
56
J1
C101
1µF
50V
GND
C102
0.01uF
50V
OUT2+
OUT2OUT1+
OUT1-
4
3
2
1
GND
1
11
17
18
28
33
36
39
46
7
AVSS
TAS6422EQDKQRQ1
4.99k
GND
GND
I2C_ADDR1
3.3V
R6
STANDBY
1.00k
S1
STANDBY
3
1.00k
3
2
3.3V
R8
S2
MUTE
2
D1
5
4
GND
C18
0.1uF
16V
1
FAULT
Red
R9
4.99k
3.3V
H1
1
2
4.99k
5
4
C17
0.1uF
16V
1
R7
MUTE
D2
GND
WARN
Yellow
GND
GND
GND
GND
GND
Figure 4-5. Schematic (Page 3)
24
TAS6422E-Q1 EVM
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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Board Layouts, Bill of Materials, and Schematic
VBAT
L4
J10
PVDD
Power Supplies
VIN
4
3
2
1
1.5uH
C78
4.7µF
50V
VIN RANGE
C79
0.082uF
50V
C80
2200pF
50V
C81
330uF
35V
GND
4.5-26VDC
GND
PVDD
GND
GND
U15
TL760M33QKVURQ1
L5
1
PVDD-VR
IN
OUT
3.3V
GND
GND
3.3V to 1.8V LDO
3.3V
3.3V
D5
C85
0.1uF
16V
4
C84
0.1uF
50V
3.3V
3
GND
C83
10uF
50V
GND
GND
GND
OUTPUT = 1.8V@400mA
3.3V
Green
GND
GND
GND
3.3V to 1V BUCK LDO for XMOS
OUTPUT = 1.0V@1A
IN
OUT
U17
4
C88
1uF
EN
NR/FB
4
C89
22uF
10V
VIN
GND
GND
2
SW
3 SW
2.2uH
1
EN
0.01µF
GND
1.0V
L6
5
C92
3
360
C86
47uF
16V
3.3V
C87
1µF
1
2DNP
1.8V
U16
1
J12
R58
GND
FB
5
GND
2
R59
66.5k
GND
C90
22uF
10V
GND
TLV62568DBVR
GND
TPS73618DBVR
C103
22uF
10V
GND
C91
0.1uF
50V
GND
R61
100k
GND
GND
S4
XMOS ENABLE
3
3.3V
2
GND
TO USB
USB-EN
5
4
1
GND
Figure 4-6. Schematic (Page 4)
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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TAS6422E-Q1 EVM
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25
Board Layouts, Bill of Materials, and Schematic
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4.3 Bill of Materials
Table 4-1 lists the TAS6422EQ1EVM bill of materials.
Table 4-1. TAS6422EQ1EVM Bill of Materials
Designator
Qty
Value
Description
Package Reference
Part Number
Manufacturer
AMPS115
Any
0603
C0603C105K3RACTU
Kemet
0603
UMK107AB7105KA-T
Taiyo Yuden
CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, 0603
0603
C0603C104K5RACTU
Kemet
CAP, CERM, 2.2 uF, 16 V, +/- 10%, X7R, 0603
0603
EMK107BB7225KA-T
Taiyo Yuden
CAP, CERM, 1 uF, 50 V, +/- 10%, X7R, 0805
0805
C0805C105K5RACTU
Kemet
0.01uF
CAP, CERM, 0.01 uF, 50 V, +/- 10%, C0G/NP0, 0402
0402
GCM155R71H103KA55D
MuRata
11
0.1uF
CAP, CERM, 0.1 uF, 16 V, +/- 10%, X7R, AEC-Q200 Grade 1,
0402
0402
C0402C104K4RACAUTO
Kemet
C19, C20, C21, C22, C23,
C24, C25, C26, C27, C28,
C29, C30, C31, C32, C33,
C34, C35, C36, C37, C38,
C39, C40, C41, C42, C43,
C44, C45, C47, C49, C50,
C51, C52, C53, C54, C55,
C91
36
0.1uF
CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, 0402
0402
C1005X7R1H104K050BB
TDK
C46
1
2.2uF
CAP, CERM, 2.2 uF, 16 V,+/- 10%, X7R, 0603
0603
EMK107BB7225MA-T
Taiyo Yuden
C48
1
470pF
CAP, CERM, 470 pF, 50 V,+/- 5%, C0G, AEC-Q200 Grade 1,
0402
0402
GRT1555C1H471JA02D
MuRata
C57, C60, C61, C62, C63
5
10pF
CAP, CERM, 10 pF, 50 V, +/- 5%, C0G/NP0, 0402
0402
885012005055
Wurth Elektronik
C58, C59
2
18pF
CAP, CERM, 18 pF, 50 V, +/- 5%, C0G/NP0, 0603
0603
GRM1885C1H180JA01D
MuRata
C64, C65
2
10uF
CAP, CERM, 10 uF, 10 V, +/- 20%, X5R, 0603
0603
C1608X5R1A106M080AC
TDK
C68
1
4700pF
CAP, CERM, 4700 pF, 25 V,+/- 10%, X7R, 0402
0402
CC0402KRX7R8BB472
Yageo
C69
1
0.068uF
CAP, CERM, 0.068 uF, 50 V, +/- 10%, X7R, AEC-Q200 Grade
1, 0402
0402
CGA2B3X7R1H683K050BB
TDK
C71, C77, C88
3
1uF
CAP, CERM, 1 uF, 6.3 V, +/- 20%, X5R, 0402
0402
GRM152R60J105ME15D
MuRata
C72
1
100pF
CAP, CERM, 100 pF, 50 V, +/- 5%, C0G/NP0, AEC-Q200
Grade 1, 0402
0402
CGA2B2C0G1H101J050BA
TDK
C78
1
4.7uF
CAP, CERM, 4.7 µF, 50 V,+/- 10%, X7R, AEC-Q200 Grade 1,
1210
1210
C1210C475K5RACAUTO
Kemet
C79
1
0.082uF
CAP, CERM, 0.082 uF, 50 V, +/- 10%, X7R, 0805
0805
08055C823KAT2A
AVX
C80
1
2200pF
CAP, CERM, 2200 pF, 50 V, +/- 5%, C0G/NP0, 0805
0805
GRM2165C1H222JA01D
MuRata
C81
1
330uF
CAP, AL, 330 uF, 35 V, +/- 20%, AEC-Q200 Grade 1, TH
D10xL20mm
UBT1V331MPD1TD
Nichicon
C83
1
10uF
CAP, CERM, 10 uF, 50 V, +/- 10%, X5R, 1206
1206
GRM31CR61H106KA12L
MuRata
C84
1
0.1uF
CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, 0603
0603
GCM188R71H104KA57D
MuRata
C86
1
47uF
CAP, AL, 47 uF, 16 V, +/- 20%, 0.8 ohm, AEC-Q200 Grade 2,
TH
D5xL11mm
EEU-FC1C470
Panasonic
C87
1
1uF
CAP, CERM, 1 µF, 16 V,+/- 20%, X7R, 0603
0603
CL10B105MO8NNWC
Samsung
C89, C90, C103
3
22uF
CAP, CERM, 22 uF, 10 V, +/- 20%, X5R, 0603
0603
C1608X5R1A226M080AC
TDK
C92
1
0.01uF
CAP, CERM, 0.01 µF, 6.3 V,+/- 10%, X7R, 0402
0402
0402B103K6R3CT
Walsin
D1
1
Yellow
LED, Yellow , SMD
0805 LED
LTST-C170KSKT
Lite-On
!PCB1
1
C1, C10, C12, C96
4
1uF
CAP, CERM, 1 uF, 25 V, +/- 10%, X7R, 0603
C4, C82, C94
3
1uF
CAP, CERM, 1 uF, 50 V, +/- 10%, X7R, 0603
C5, C11, C93, C95
4
0.1uF
C6, C9, C15, C97, C98
5
2.2uF
C7, C13, C99, C101
4
1uF
C8, C14, C100, C102
4
C17, C18, C56, C66, C67,
C70, C73, C74, C75, C76,
C85
26
Printed Circuit Board
TAS6422E-Q1 EVM
Alternate Part Number
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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Board Layouts, Bill of Materials, and Schematic
Table 4-1. TAS6422EQ1EVM Bill of Materials (continued)
Designator
Qty
Value
Description
D2
1
Package Reference
Part Number
Manufacturer
Red
LED, Red, SMD
Red 0805 LED
LTST-C170KRKT
Lite-On
D3, D4
D5
H1
2
Blue
LED, Blue, SMD
LED_0805
LTST-C170TBKT
Lite-On
1
Green
LED, Green, SMD
LED_0805
LTST-C170KGKT
Lite-On
1
Heat Sink for DKQ Packages, 41.4x20 mm
Heat Sink for DKQ Packages, HS-DKQ56_20X41.4X32.77
41.4x20 mm
Any
H2, H3, H4, H5
4
MACHINE SCREW PAN PHILLIPS M3
M3 Screw
RM3X8MM 2701
APM HEXSEAL
H6, H7, H8, H9
4
Standoff, Hex, 12mm, M3, Aluminum
Aluminum M3 12mm Hex
Standoff
24434
Keystone
H10
1
Arctic Silver 5 Thermal Paste
ARCTIC SILVER 5
ARTIC SILVER, INC.
J1, J10
2
Terminal Block, 3.5mm Pitch, 4x1, TH
14x8.2x6.5mm
ED555/4DS
On-Shore Technology
J3
1
Connector, Receptacle, Micro-USB Type AB, R/A, Bottom
Mount SMT
5.6x2.5x8.2mm
475890001
Molex
J4
1
Receptacle, 50mil, 6x1, Gold, R/A, TH
6x1 Receptacle
LPPB061NGCN-RC
Sullins Connector
Solutions
J5, J6, J7, J8, J14
5
Header, 100mil, 3x1, Gold, TH
PBC03SAAN
PBC03SAAN
Sullins Connector
Solutions
J13
1
Header, 100mil, 2x1, Gold, TH
Sullins 100mil, 1x2, 230 mil
above insulator
PBC02SAAN
Sullins Connector
Solutions
L1, L2, L7, L8
4
3.3uH
Inductor, 3.3 uH, 4.5 A, 0.038 ohm, AEC-Q200 Grade 0, SMD
5.45x5.25x3.0mm
VCMT053T-3R3MN5
Cyntec
L3
1
30 ohm
Ferrite Bead, 30 ohm @ 100 MHz, 6 A, 0805
0805
MPZ2012S300AT000
TDK
L4
1
1.5uH
Inductor, 1.5 uH, 5.5 A, 0.017 ohm, AEC-Q200 Grade 0, SMD
5.45x5.25x3.0mm
VCMT053T-1R5MN5
Cyntec
L5
1
180 ohm
Ferrite Bead, 180 ohm @ 100 MHz, 3.4 A, 0806
0806
NFZ2MSM181SN10L
MuRata
L6
1
2.2uH
Inductor, Multilayer, Ferrite, 2.2 uH, 1.3 A, 0.08 ohm, SMD
SMD, Body 2.5x2mm, Height
1.2mm
LQM2HPN2R2MG0L
MuRata
Q1
1
40 V
Transistor, PNP, 40 V, 0.2 A, SOT-23
SOT-23
MMBT3906-7-F
Diodes Inc.
R3, R5, R7, R9, R46, R48,
R53, R55
8
4.99k
RES, 4.99 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW04024K99FKED
Vishay-Dale
R6, R8
2
1.00k
RES, 1.00 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW04021K00FKED
Vishay-Dale
R10
1
1.00k
RES, 1.00 k, 1%, 0.1 W, 0402
0402
ERJ-2RKF1001X
Panasonic
R11, R12
2
2.20k
RES, 2.20 k, 1%, 0.1 W, 0402
0402
ERJ-2RKF2201X
Panasonic
R13
1
4.75
RES, 4.75, 1%, 0.1 W, 0603
0603
RC0603FR-074R75L
Yageo
R14, R21, R22, R23, R25,
R28, R29, R30
8
33.2
RES, 33.2, 1%, 0.05 W, 0201
0201
RC0201FR-0733R2L
Yageo America
R15, R16, R17, R18
4
47.0k
RES, 47.0 k, 1%, 0.0625 W, 0402
0402
RC0402FR-0747KL
Yageo America
R19, R24
2
10.0k
RES, 10.0 k, 1%, 0.063 W, 0402
0402
RC0402FR-0710KL
Yageo America
R20
1
680
RES, 680, 1%, 0.1 W, 0603
0603
RC0603FR-07680RL
Yageo
R26
1
100k
RES, 100 k, 1%, 0.1 W, 0402
0402
ERJ-2RKF1003X
Panasonic
R27
1
43.2
RES, 43.2, 1%, 0.1 W, 0603
0603
RC0603FR-0743R2L
Yageo
R31
1
25.5k
RES, 25.5 k, 1%, 0.05 W, 0201
0201
RC0201FR-0725K5L
Yageo America
R32, R33, R34
3
10.2k
RES, 10.2 k, 1%, 0.05 W, 0201
0201
RC0201FR-0710K2L
Yageo America
R35
1
51.0k
RES, 51.0 k, 1%, 0.05 W, 0201
0201
RC0201FR-0751KL
Yageo America
R36
1
0
RES, 0, 5%, 0.1 W, AEC-Q200 Grade 0, 0402
0402
ERJ-2GE0R00X
Panasonic
R37, R38, R39, R40, R41,
R42, R44, R45, R49
9
49.9
RES, 49.9, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW040249R9FKED
Vishay-Dale
R43
1
470
RES, 470, 1%, 0.1 W, 0603
0603
RC0603FR-07470RL
Yageo
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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TAS6422E-Q1 EVM
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27
Board Layouts, Bill of Materials, and Schematic
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Table 4-1. TAS6422EQ1EVM Bill of Materials (continued)
Designator
Qty
Value
Description
R47
1
Package Reference
Part Number
Manufacturer
100
RES, 100, 1%, 0.1 W, 0402
0402
ERJ-2RKF1000X
Panasonic
R50
R51
1
681
RES, 681, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW0402681RFKED
Vishay-Dale
1
100k
RES, 100 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW0402100KFKED
Vishay-Dale
R54
1
10.0k
RES, 10.0 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW040210K0FKED
Vishay-Dale
R57, R58
2
360
RES, 360, 5%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW0402360RJNED
Vishay-Dale
R59
1
66.5k
RES, 66.5 k, 1%, 0.1 W, 0603
0603
RC0603FR-0766K5L
Yageo
R61
1
100k
RES, 100 k, 1%, 0.1 W, 0603
0603
RC0603FR-07100KL
Yageo
S1, S2, S3, S4
4
Switch, SPDT, On-On, 1 Pos, 0.4A, 28 VDC, TH
5.6x5.4mm
FT1D-4M-Z
Copal Electronics
SH1, SH2, SH3, SH4, SH5
5
Shunt, 100mil, Gold plated, Black
Shunt
SNT-100-BK-G
Samtec
U1
1
45-W, 2-MHz Digital Input 2-Channel Automotive Class-D
Audio Amplifier with Load Dump Protection and I2C
Diagnostics
HSSOP56
TAS6422EQDKQRQ1
Texas Instruments
U2
1
IC MCU 512KB RAM, 128TQFP
TQFP-128
XEF216-512-TQ128-C20
XMOS semiconductor
U3
1
OSC, 24 MHz, 2.25 - 3.63 V, SMD
2x1.6mm
ASTMLPA-24.000MHZ-EJ-E-T
Abracon Corporation
U4
1
Dual-Bit Dual-Supply Bus Transceiver, DQE0008A, LARGE
T&R
DQE0008A
SN74AVC2T244DQER
Texas Instruments
U5
1
Programmable 1-PLL VCXO Clock Synthesizer with 2.5-V or
3.3-V LVCMOS Outputs, PW0014A (TSSOP-14)
PW0014A
CDCE913PWR
Texas Instruments
U6
1
Single-Channel Ultra-Small Adjustable Supervisory Circuit
With Active-High Open-Drain Output, DRY0006A (USON-6)
DRY0006A
TPS3897ADRYR
Texas Instruments
U7
1
Enhanced Product Dual Buffer/Driver with Open-Drain Output, DSF0006A
DCK0006A (SOT-SC70-6)
SN74LVC2G07DSFR
Texas Instruments
U8
1
Photolink- Fiber Optic Receiver, TH
13.5x10x9.7mm
PLR135/T10
Everlight
U9, U10, U11, U13
4
Single 2-Line to 1-Line Data Selector/Multiplexer, DCU0008A,
LARGE T&R
DCU0008A
SN74LVC2G157DCUR
Texas Instruments
U12
1
Automotive Catalog 96-kHz 24-Bit Digital Audio Interface
Receiver, 50 ps Jitter, 3.3V, -40 to 85 degC, 28-Pin TSSOP
(PW), Green (RoHS & no Sb/Br)
PW0028A
DIR9001IPWQ1
Texas Instruments
U14
1
5.5V, 4A, 16mΩ Automotive Load Switch With Adjustable Rise DSG0008B
Time and Optional Quick Output Discharge, DSG0008B
(WSON-8)
TPS22965TDSGRQ1
Texas Instruments
U15
1
Single Output Automotive LDO, 500 mA, Fixed 3.3 V Output,
3.8 to 26 V Input, 3-pin PFM (KVU), -40 to 125 degC, Green
(RoHS & no Sb/Br)
KVU0003A
TL760M33QKVURQ1
Texas Instruments
U16
1
Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low
Noise, Reverse Current Protection, DBV0005A (SOT-23-5)
DBV0005A
TPS73618DBVR
Texas Instruments
U17
1
1-A High Efficiency Step-Down Converter in SOT23-5
Package, DBV005A, DBV0005A (SOT-5)
DBV0005A
TLV62568DBVR
Texas Instruments
Y1
1
Crystal, 12.288 MHz, 18pF, SMD
Crystal, 2.5x1x3.2mm
ABM8G-12.288MHZ-18-D2Y-T
Abracon Corporation
FID1, FID2, FID3, FID4, FID5,
FID6
0
Fiducial mark. There is nothing to buy or mount.
N/A
N/A
N/A
J12
0
Header, 100mil, 2x1, Gold, TH
Sullins 100mil, 1x2, 230 mil
above insulator
PBC02SAAN
Sullins Connector
Solutions
R2, R4, R52, R56
0
RES, 4.99 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402
0402
CRCW04024K99FKED
Vishay-Dale
28
1x2
4.99k
TAS6422E-Q1 EVM
Alternate Part Number
969102-0000-DA
CDCE913PW
SN74LVC2G157DCUT
TPS22965TDSGTQ1
TLV62568DBVT
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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Revision History
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision * (October 2020) to Revision A (February 2021)
Page
• Changed image PPC3 Window ......................................................................................................................... 7
• Changed image TAS6422E EVM Home Window .............................................................................................. 7
• Changed image TAS6422E EVM Register Map Window .................................................................................. 9
• Changed image TAS6422E EVM Device Monitor and Control Window .......................................................... 10
• Changed image Device Monitor and Control Window ..................................................................................... 12
• Changed the Miscellaneous Control Section ...................................................................................................13
• Changed image Miscellaneous Control Section .............................................................................................. 13
• Changed image Register Map Window ........................................................................................................... 16
• Changed image Register Map Window - Expanding ....................................................................................... 16
• Changed image I2C Window – I2C Logging ....................................................................................................18
• Changed image I2C Window – Sending I2C Commands ................................................................................18
SLOU541A – OCTOBER 2020 – REVISED FEBRUARY 2021
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TAS6422E-Q1 EVM
29
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