EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "mikroPhone WiFi ESP32 adapter"
Date "2024-01-22"
Rev "4.0"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
NoConn ~ 6250 3550
NoConn ~ 6350 3550
NoConn ~ 6450 3550
NoConn ~ 6550 3550
NoConn ~ 6650 3550
NoConn ~ 6750 3550
$Comp
L power:GND #PWR07
U 1 1 5C506AB0
P 7550 3400
F 0 "#PWR07" H 7550 3150 50  0001 C CNN
F 1 "GND" H 7550 3250 50  0000 C CNN
F 2 "" H 7550 3400 50  0001 C CNN
F 3 "" H 7550 3400 50  0001 C CNN
	1    7550 3400
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR08
U 1 1 5C506B40
P 5500 3650
F 0 "#PWR08" H 5500 3400 50  0001 C CNN
F 1 "GND" H 5500 3500 50  0000 C CNN
F 2 "" H 5500 3650 50  0001 C CNN
F 3 "" H 5500 3650 50  0001 C CNN
	1    5500 3650
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR04
U 1 1 5C506BD6
P 5050 1150
F 0 "#PWR04" H 5050 1000 50  0001 C CNN
F 1 "+3.3V" H 5050 1290 50  0000 C CNN
F 2 "" H 5050 1150 50  0001 C CNN
F 3 "" H 5050 1150 50  0001 C CNN
	1    5050 1150
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5C506C38
P 5050 1400
F 0 "C2" H 5075 1500 50  0000 L CNN
F 1 "0.1uF" H 5075 1300 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 5088 1250 50  0001 C CNN
F 3 "" H 5050 1400 50  0001 C CNN
	1    5050 1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C1
U 1 1 5C506C85
P 4750 1400
F 0 "C1" H 4775 1500 50  0000 L CNN
F 1 "22uF" H 4775 1300 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 4788 1250 50  0001 C CNN
F 3 "" H 4750 1400 50  0001 C CNN
	1    4750 1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C3
U 1 1 5C506CD9
P 4350 2100
F 0 "C3" H 4375 2200 50  0000 L CNN
F 1 "10uF" H 4375 2000 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 4388 1950 50  0001 C CNN
F 3 "" H 4350 2100 50  0001 C CNN
	1    4350 2100
	1    0    0    -1  
$EndComp
$Comp
L Device:R R1
U 1 1 5C506D6E
P 4350 1700
F 0 "R1" V 4430 1700 50  0000 C CNN
F 1 "10K" V 4350 1700 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4280 1700 50  0001 C CNN
F 3 "" H 4350 1700 50  0001 C CNN
	1    4350 1700
	1    0    0    -1  
$EndComp
Wire Wire Line
	5050 1250 5050 1200
Connection ~ 5050 1200
Wire Wire Line
	7450 3200 7550 3200
Wire Wire Line
	7550 3200 7550 3300
Wire Wire Line
	7450 3300 7550 3300
Connection ~ 7550 3300
Wire Wire Line
	7450 2800 8300 2800
Wire Wire Line
	7450 2700 8300 2700
Text Label 8300 2800 2    55   ~ 0
UART2_RXD
Text Label 8300 2700 2    55   ~ 0
UART2_TXD
Wire Wire Line
	4750 1200 5050 1200
Wire Wire Line
	4750 1600 4750 1550
Wire Wire Line
	5050 1600 5050 1550
$Comp
L power:GND #PWR06
U 1 1 5C7D5E27
P 4350 2400
F 0 "#PWR06" H 4350 2150 50  0001 C CNN
F 1 "GND" H 4350 2250 50  0000 C CNN
F 2 "" H 4350 2400 50  0001 C CNN
F 3 "" H 4350 2400 50  0001 C CNN
	1    4350 2400
	1    0    0    -1  
$EndComp
Text Label 8300 3500 2    55   ~ 0
PCM_SYNC
Text Label 8300 3600 2    55   ~ 0
PCM_DO
Wire Wire Line
	6950 3550 6950 3600
Wire Wire Line
	6050 3550 6050 3600
Wire Wire Line
	6050 3600 5500 3600
Wire Wire Line
	5500 3200 5500 3600
Wire Wire Line
	5550 3200 5500 3200
Connection ~ 5500 3600
Wire Wire Line
	6950 3600 8300 3600
Wire Wire Line
	5550 2200 4600 2200
Text Label 4600 2200 0    55   ~ 0
PCM_DI
Text Label 4600 2300 0    55   ~ 0
UART2_RI
Wire Wire Line
	5550 2300 4600 2300
Wire Wire Line
	5550 2400 4600 2400
Wire Wire Line
	5550 2500 4600 2500
Text Label 4600 2400 0    55   ~ 0
UART2_DTR
Text Label 4600 2500 0    55   ~ 0
PCM_CLK
Text Label 8300 2600 2    55   ~ 0
VSPI_SS0
Text Label 8300 2500 2    55   ~ 0
VSPI_SCK
Text Label 8300 2400 2    55   ~ 0
VSPI_MISO
Text Label 8300 1800 2    55   ~ 0
VSPI_MOSI
Wire Wire Line
	7450 1800 8300 1800
Wire Wire Line
	7450 2400 8300 2400
Wire Wire Line
	6850 3550 6850 3700
Wire Wire Line
	6150 3550 6150 3800
Wire Wire Line
	5050 1200 5300 1200
Wire Wire Line
	4750 1200 4750 1250
Wire Wire Line
	7550 3300 7550 3400
Wire Wire Line
	4750 1600 5050 1600
Wire Wire Line
	5500 3600 5500 3650
$Comp
L Switch:SW_Push SW1
U 1 1 5CC8732C
P 6600 4650
F 0 "SW1" H 6750 4750 50  0000 C CNN
F 1 "ESP32_RST" H 6600 4550 50  0000 C CNN
F 2 "Button_Switch_SMD:SW_SPST_PTS810" H 6600 4850 50  0001 C CNN
F 3 "~" H 6600 4850 50  0001 C CNN
	1    6600 4650
	-1   0    0    -1  
$EndComp
Wire Wire Line
	7450 2500 8300 2500
$Comp
L esp:ESP32-WROOM U1
U 1 1 6176A093
P 6500 2500
F 0 "U1" H 5850 3750 60  0000 C CNN
F 1 "ESP32-WROOM" H 6850 3750 60  0000 C CNN
F 2 "footprints:Espressif_ESP32-WROOM" H 6600 3900 60  0001 C CNN
F 3 "" H 6050 2950 60  0001 C CNN
	1    6500 2500
	1    0    0    -1  
$EndComp
Text Label 3800 1900 0    60   ~ 0
ESP32_EN
$Comp
L power:GND #PWR05
U 1 1 6148BC4B
P 5050 1650
F 0 "#PWR05" H 5050 1400 50  0001 C CNN
F 1 "GND" H 5055 1477 50  0000 C CNN
F 2 "" H 5050 1650 50  0001 C CNN
F 3 "" H 5050 1650 50  0001 C CNN
	1    5050 1650
	1    0    0    -1  
$EndComp
Wire Wire Line
	4350 2250 4350 2400
Wire Wire Line
	4350 1850 4350 1900
Wire Wire Line
	5050 1150 5050 1200
Wire Wire Line
	5050 1600 5050 1650
Connection ~ 5050 1600
Wire Wire Line
	5300 1800 5550 1800
Wire Wire Line
	5300 1800 5300 1200
Wire Wire Line
	4350 1550 4350 1200
Wire Wire Line
	4350 1200 4750 1200
Connection ~ 4750 1200
Wire Wire Line
	5550 1900 4350 1900
Connection ~ 4350 1900
Wire Wire Line
	4350 1900 4350 1950
Text Label 7400 4650 2    60   ~ 0
ESP32_EN
Wire Wire Line
	6800 4650 6850 4650
$Comp
L Device:C C4
U 1 1 62863E5F
P 6850 4850
F 0 "C4" H 6850 4950 50  0000 L CNN
F 1 "0.1uF" H 6850 4750 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6888 4700 50  0001 C CNN
F 3 "~" H 6850 4850 50  0001 C CNN
	1    6850 4850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR09
U 1 1 6286513F
P 6350 5100
F 0 "#PWR09" H 6350 4850 50  0001 C CNN
F 1 "GND" H 6350 4950 50  0000 C CNN
F 2 "" H 6350 5100 50  0001 C CNN
F 3 "" H 6350 5100 50  0001 C CNN
	1    6350 5100
	1    0    0    -1  
$EndComp
Wire Wire Line
	6850 5000 6850 5050
Wire Wire Line
	6850 5050 6350 5050
Wire Wire Line
	6350 5050 6350 5100
Wire Wire Line
	6400 4650 6350 4650
Wire Wire Line
	6350 4650 6350 5050
Connection ~ 6350 5050
Wire Wire Line
	6850 4700 6850 4650
Connection ~ 6850 4650
Wire Wire Line
	6850 4650 7400 4650
NoConn ~ 5550 2000
Wire Wire Line
	3800 1900 4350 1900
Text Label 4600 2600 0    60   ~ 0
~PERST
Wire Wire Line
	5550 2600 4600 2600
NoConn ~ 5550 2100
$Comp
L Connector_Generic:Conn_02x20_Odd_Even J1
U 1 1 64F71377
P 1950 2400
F 0 "J1" H 1950 3400 50  0000 C CNN
F 1 "WiFi" H 1950 1300 50  0000 C CNN
F 2 "Connector_Molex:Molex_SlimStack_55560-0401_2x20_P0.50mm_Vertical" H 1950 2400 50  0001 C CNN
F 3 "~" H 1950 2400 50  0001 C CNN
	1    1950 2400
	1    0    0    -1  
$EndComp
Text Label 3200 3100 2    55   ~ 0
PCM_DI
Text Label 700  2600 0    55   ~ 0
UART2_RI
Wire Wire Line
	1750 2600 700  2600
Wire Wire Line
	1750 2700 700  2700
Text Label 700  2700 0    55   ~ 0
UART2_DTR
Text Label 3200 3200 2    55   ~ 0
PCM_CLK
Text Label 700  3100 0    55   ~ 0
~PERST
Wire Wire Line
	1750 3100 700  3100
Text Label 700  2800 0    55   ~ 0
UART2_RXD
Text Label 700  2900 0    55   ~ 0
UART2_TXD
Text Label 3200 2900 2    55   ~ 0
PCM_SYNC
Text Label 3200 3000 2    55   ~ 0
PCM_DO
Text Label 3200 2100 2    55   ~ 0
VSPI_SS0
Text Label 3200 2200 2    55   ~ 0
VSPI_SCK
Text Label 3200 2300 2    55   ~ 0
VSPI_MISO
Text Label 3200 2400 2    55   ~ 0
VSPI_MOSI
Wire Wire Line
	3200 2100 2250 2100
Wire Wire Line
	3200 2200 2250 2200
Wire Wire Line
	3200 2300 2250 2300
Wire Wire Line
	3200 2400 2250 2400
Wire Wire Line
	2250 2900 3200 2900
Wire Wire Line
	2250 3000 3200 3000
Wire Wire Line
	2250 3100 3200 3100
Wire Wire Line
	2250 3200 3200 3200
Wire Wire Line
	1750 3200 1550 3200
Wire Wire Line
	1550 3200 1550 3300
Wire Wire Line
	1550 3300 1750 3300
Wire Wire Line
	1550 3300 1550 3400
Wire Wire Line
	1550 3400 1750 3400
Connection ~ 1550 3300
Wire Wire Line
	1750 1500 1650 1500
Wire Wire Line
	1650 1500 1650 2200
Wire Wire Line
	1750 2200 1650 2200
Connection ~ 1650 2200
Wire Wire Line
	1650 2200 1650 2500
Wire Wire Line
	1750 2500 1650 2500
Connection ~ 1650 2500
Wire Wire Line
	2250 1500 2350 1500
Wire Wire Line
	2250 2800 2350 2800
Connection ~ 2350 2800
Wire Wire Line
	2250 2500 2350 2500
Connection ~ 2350 2500
Wire Wire Line
	2350 2500 2350 2800
Connection ~ 1550 3200
$Comp
L power:+3.3V #PWR01
U 1 1 673275E9
P 1550 1200
F 0 "#PWR01" H 1550 1050 50  0001 C CNN
F 1 "+3.3V" H 1565 1373 50  0000 C CNN
F 2 "" H 1550 1200 50  0001 C CNN
F 3 "" H 1550 1200 50  0001 C CNN
	1    1550 1200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR02
U 1 1 6739FE02
P 1650 3600
F 0 "#PWR02" H 1650 3350 50  0001 C CNN
F 1 "GND" H 1650 3450 50  0000 C CNN
F 2 "" H 1650 3600 50  0001 C CNN
F 3 "" H 1650 3600 50  0001 C CNN
	1    1650 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	1650 3550 2350 3550
Wire Wire Line
	1650 3550 1650 3600
Connection ~ 1650 3550
Wire Wire Line
	700  3000 1750 3000
Wire Wire Line
	3200 3300 2250 3300
Text Label 3200 3300 2    55   ~ 0
USB_MUX_S
Text Label 700  3000 0    55   ~ 0
USB_MUX_EN
Text Label 700  2300 0    55   ~ 0
USB_D_N
Text Label 700  2400 0    55   ~ 0
USB_D_P
Wire Wire Line
	1750 2300 700  2300
Wire Wire Line
	1750 2400 700  2400
Wire Wire Line
	2350 1500 2350 1600
Wire Wire Line
	2250 1600 2350 1600
Connection ~ 2350 1600
Wire Wire Line
	1650 2500 1650 3550
Wire Wire Line
	2350 1600 2350 2000
Wire Wire Line
	2250 2000 2350 2000
Connection ~ 2350 2000
Wire Wire Line
	2350 2000 2350 2500
Wire Wire Line
	7450 2600 8300 2600
Wire Wire Line
	1550 1200 1550 1250
Text Label 3200 1700 2    55   ~ 0
WAKE
Text Label 3200 1800 2    55   ~ 0
GPIO_22
Text Label 3200 1900 2    55   ~ 0
GPIO_20
Wire Wire Line
	2250 1800 3200 1800
Wire Wire Line
	2250 1900 3200 1900
Wire Wire Line
	2250 1700 3200 1700
Text Label 3200 2600 2    55   ~ 0
UART0_RXD
Text Label 3200 2700 2    55   ~ 0
UART0_TXD
Wire Wire Line
	2250 2700 3200 2700
Wire Wire Line
	2250 2600 3200 2600
Text Label 700  1600 0    55   ~ 0
HSPI_SS0
Text Label 700  1700 0    55   ~ 0
HSPI_MOSI
Text Label 700  1800 0    55   ~ 0
HSPI_MISO
Text Label 700  1900 0    55   ~ 0
HSPI_SCK
Text Label 700  2000 0    55   ~ 0
IO27
Text Label 700  2100 0    55   ~ 0
IO26
Wire Wire Line
	700  1600 1750 1600
Wire Wire Line
	700  1700 1750 1700
Wire Wire Line
	700  1800 1750 1800
Wire Wire Line
	700  1900 1750 1900
Wire Wire Line
	700  2000 1750 2000
Wire Wire Line
	700  2100 1750 2100
Text Label 8300 3000 2    55   ~ 0
WAKE
Wire Wire Line
	7450 3000 8300 3000
Text Label 8300 3700 2    55   ~ 0
HSPI_SS0
Text Label 8300 3800 2    55   ~ 0
HSPI_MOSI
Wire Wire Line
	6150 3800 8300 3800
Wire Wire Line
	6850 3700 8300 3700
Text Label 8300 2000 2    55   ~ 0
UART0_TXD
Text Label 8300 2100 2    55   ~ 0
UART0_RXD
Text Label 8300 1900 2    55   ~ 0
GPIO_20
Text Label 8300 2200 2    55   ~ 0
GPIO_22
Wire Wire Line
	7450 1900 8300 1900
Wire Wire Line
	7450 2000 8300 2000
Wire Wire Line
	7450 2100 8300 2100
Wire Wire Line
	7450 2200 8300 2200
Text Label 4600 2700 0    55   ~ 0
IO26
Text Label 4600 2800 0    55   ~ 0
IO27
Wire Wire Line
	4600 2700 5550 2700
Wire Wire Line
	4600 2800 5550 2800
Text Label 4600 2900 0    55   ~ 0
HSPI_SCK
Text Label 4600 3000 0    55   ~ 0
HSPI_MISO
Wire Wire Line
	4600 2900 5550 2900
Wire Wire Line
	4600 3000 5550 3000
NoConn ~ 700  2300
NoConn ~ 700  2400
NoConn ~ 700  3000
NoConn ~ 3200 3300
$Comp
L power:PWR_FLAG #FLG01
U 1 1 64FACFC4
P 1900 1200
F 0 "#FLG01" H 1900 1275 50  0001 C CNN
F 1 "PWR_FLAG" H 1900 1373 50  0000 C CNN
F 2 "" H 1900 1200 50  0001 C CNN
F 3 "~" H 1900 1200 50  0001 C CNN
	1    1900 1200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1900 1200 1900 1250
Wire Wire Line
	1900 1250 1550 1250
Connection ~ 1550 1250
Wire Wire Line
	1550 1250 1550 3200
$Comp
L power:PWR_FLAG #FLG02
U 1 1 64FB2C7B
P 2350 1200
F 0 "#FLG02" H 2350 1275 50  0001 C CNN
F 1 "PWR_FLAG" H 2350 1373 50  0000 C CNN
F 2 "" H 2350 1200 50  0001 C CNN
F 3 "~" H 2350 1200 50  0001 C CNN
	1    2350 1200
	1    0    0    -1  
$EndComp
Wire Wire Line
	2350 1200 2350 1500
Connection ~ 2350 1500
$Comp
L myConn:Spacer J2
U 1 1 64EE975F
P 1950 4750
F 0 "J2" H 2030 4792 50  0000 L CNN
F 1 "Spacer" H 2030 4701 50  0000 L CNN
F 2 "footprints:Spacer_small" H 1950 4750 50  0001 C CNN
F 3 "~" H 1950 4750 50  0001 C CNN
	1    1950 4750
	1    0    0    -1  
$EndComp
$Comp
L myConn:Spacer J3
U 1 1 64EEA09B
P 1950 4950
F 0 "J3" H 2030 4992 50  0000 L CNN
F 1 "Spacer" H 2030 4901 50  0000 L CNN
F 2 "footprints:Spacer_small" H 1950 4950 50  0001 C CNN
F 3 "~" H 1950 4950 50  0001 C CNN
	1    1950 4950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR03
U 1 1 64EEA505
P 1650 5050
F 0 "#PWR03" H 1650 4800 50  0001 C CNN
F 1 "GND" H 1655 4877 50  0000 C CNN
F 2 "" H 1650 5050 50  0001 C CNN
F 3 "" H 1650 5050 50  0001 C CNN
	1    1650 5050
	1    0    0    -1  
$EndComp
Wire Wire Line
	1750 4750 1650 4750
Wire Wire Line
	1650 4750 1650 4950
Wire Wire Line
	1750 4950 1650 4950
Connection ~ 1650 4950
Wire Wire Line
	1650 4950 1650 5050
Wire Wire Line
	7450 2900 7650 2900
Wire Wire Line
	7650 2900 7650 3500
Wire Wire Line
	7650 3500 8300 3500
Wire Wire Line
	1750 2800 700  2800
Wire Wire Line
	1750 2900 700  2900
Wire Wire Line
	2350 2800 2350 3550
Wire Wire Line
	2250 3400 3200 3400
NoConn ~ 3200 3400
Text Label 3200 3400 2    55   ~ 0
~W_DISABLE
$EndSCHEMATC