AN726
Rev. 0.1
23
MODE
PLAY
REC
ERASE
Utility Class-D ToolStick
www.silabs.com/toolstick
LED2
LED3
LED2
LED1
RESETb
SWDIO
RESETb
SWCLK
UART0_RX
UART0_TX
UART0_RX
SWDIO
I2S_RX_WS
I2S_RX_SCK
I2S_RX_SD
I2S_RX_SCK
I2S_RX_SD
I2S_RX_WS
ADC_IN_JACK_1
ADC_IN_JACK_1
LED0
LED0
LED1
LED3
SWCLK
UART0_TX
+3.3V_VDD
USB_5.0V_Device
USB_5.0V_Debug
+3.3V_VDD
USB_5.0V_Device
USB_5.0V_Debug
VREGIN_Device
+3.3V_VDD
VIOHD
+3.3V_VDD
+3.3V_VDD
+3.3V_VDD
+3.3V_VDD
+3.3V_VDD
+3.3V_VDD
VDD_Debug
ADC_VREF
VREGIN_Device
VIOHD
VDD_Debug
VDD_Debug
+3.3V_VDD
+3.3V_VDD
+3.3V_VDD
+3.3V_VDD
5.0V_Wall
5.0V_Wall
ADC_IN_MIC
R+
R-
L+
L-
ADC_IN_JACK_1
R26
100
C16
4.7uF
S1
VOUT
VIN
GND
U4
MC7805ABD2TG
1
3
4
C19
0.1uF
R28
750
CS Slider
1
2
3
4
5
6
U2
SiM3U164-B-GM
PB4.3
1
VSSHD
2
VIOHD
3
PB4.2
4
PB4.1
5
PB4.0
6
PB3.3
7
PB3.2
8
PB3.1
9
PB3.0
10
PB1.3
11
PB1.2
12
VIO
13
VSS
14
PB1.1
15
PB1.0
16
PB0.15
17
PB0.14
18
PB0.13
19
PB0.12
20
PB0.11
21
PB0.10
22
SWDIO
23
SWCLK
24
PB0.9
25
PB0.8
26
PB0.7
27
PB0.6
28
PB0.5
29
PB0.4
30
PB0.3
31
PB0.2
32
PB0.1
33
PB0.0
34
VDD
35
VREGIN
36
VBUS
37
D+
38
D-
39
RESET
40
R49
1K
C21
4.7uF
U3
CF326-SX0261GM
GPIO
1
GND
2
D+
3
D-
4
VIO
5
VDD
6
REGIN
7
VBUS
8
RSTb/C2CK
9
C2D
10
SUSPEND
11
LED_STOP
12
NC
13
NC
14
NC
15
NC
16
NC
17
LED_RUN
18
NC
19
NC
20
NC
21
GPIO/CTS
22
GPIO/RTS
23
TD
O/SWO/RX
24
TDI/TX
25
TM
S/SWDIO
26
nSRST
27
TC
K/SWCLK
28
EPAD
29
R22
100
C17
0.1uF
L1
0.68uH
J2
CN-USB-OTG
DEVICE
+V
D-
D+
ID
GND
SH
SH
SH
SH
DS7
GREEN
R21
100
DS8
RED
PB3.3
C12
0.1uF
DS1
Blue
D4B
D3
SP0503BAHT
R29
1K
R20
1K
R27
0
R23
100
DS5
Blue
VIOHD
C24
1uF
DS3
Blue
R42
750
J6
Power Jack
3
2
1
R44
1K
R45
0
C25
0.1uF
C10
0.1uF
C23
0.1uF
R24
100
C33
4.7uF
C32
0.33uF
D1
SP0503BAHT
C9
4.7uF
C15
0.1uF
C11
4.7uF
R50
0
R25
100
C22
4.7uF
DS6
Blue
J3
CN-USB-OTG
DEBUG
+V
D-
D+
ID
GND
SH
SH
SH
SH
C20
0.1uF
DS4
Blue
C14
4.7uF
D4A
S2
DS2
Blue
C13
0.1uF
C18
4.7uF
Figure
25.
Utility Cla
ss-D T
oolS
tick Boa
rd Sc
hematic
(2 of 3)—Revi
sion 1.0
Summary of Contents for AN726
Page 27: ...AN726 Rev 0 1 27 NOTES ...