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ESP32 Datasheet(PDF) 54 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

Part # ESP32
Description  32-bit MCU & 2.4 GHz Wi-Fi & BT/BLE SoCs
PDF  64 Pages
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Manufacturer  ESPRESSIF [ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.]
Direct Link  https://www.espressif.com/
Logo ESPRESSIF - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

ESP32 Datasheet(HTML) 54 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

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Appendix A
No.
Description
13
*In Table GPIO_Matrix￿the column “Default Value if unassigned” records the default value of
the an input signal if no GPIO is assigned to it. The actual value is determined by register
GPIO_FUNCm_IN_INV_SEL and GPIO_FUNCm_IN_SEL. (The value of m ranges from 1 to
255.)
A.2. GPIO_Matrix
Table 25: GPIO_Matrix
Same input
Signal
Default value
signal from
Output enable
No.
Input signals
if unassigned*
IO_MUX
core
Output signals
of output signals
0
SPICLK_in
0
yes
SPICLK_out
SPICLK_oe
1
SPIQ_in
0
yes
SPIQ_out
SPIQ_oe
2
SPID_in
0
yes
SPID_out
SPID_oe
3
SPIHD_in
0
yes
SPIHD_out
SPIHD_oe
4
SPIWP_in
0
yes
SPIWP_out
SPIWP_oe
5
SPICS0_in
0
yes
SPICS0_out
SPICS0_oe
6
SPICS1_in
0
no
SPICS1_out
SPICS1_oe
7
SPICS2_in
0
no
SPICS2_out
SPICS2_oe
8
HSPICLK_in
0
yes
HSPICLK_out
HSPICLK_oe
9
HSPIQ_in
0
yes
HSPIQ_out
HSPIQ_oe
10
HSPID_in
0
yes
HSPID_out
HSPID_oe
11
HSPICS0_in
0
yes
HSPICS0_out
HSPICS0_oe
12
HSPIHD_in
0
yes
HSPIHD_out
HSPIHD_oe
13
HSPIWP_in
0
yes
HSPIWP_out
HSPIWP_oe
14
U0RXD_in
0
yes
U0TXD_out
1’d1
15
U0CTS_in
0
yes
U0RTS_out
1’d1
16
U0DSR_in
0
no
U0DTR_out
1’d1
17
U1RXD_in
0
yes
U1TXD_out
1’d1
18
U1CTS_in
0
yes
U1RTS_out
1’d1
23
I2S0O_BCK_in
0
no
I2S0O_BCK_out
1’d1
24
I2S1O_BCK_in
0
no
I2S1O_BCK_out
1’d1
25
I2S0O_WS_in
0
no
I2S0O_WS_out
1’d1
26
I2S1O_WS_in
0
no
I2S1O_WS_out
1’d1
27
I2S0I_BCK_in
0
no
I2S0I_BCK_out
1’d1
28
I2S0I_WS_in
0
no
I2S0I_WS_out
1’d1
29
I2CEXT0_SCL_in
1
no
I2CEXT0_SCL_out
1’d1
30
I2CEXT0_SDA_in
1
no
I2CEXT0_SDA_out
1’d1
31
pwm0_sync0_in
0
no
sdio_tohost_int_out
1’d1
32
pwm0_sync1_in
0
no
pwm0_out0a
1’d1
33
pwm0_sync2_in
0
no
pwm0_out0b
1’d1
34
pwm0_f0_in
0
no
pwm0_out1a
1’d1
Espressif Systems
47
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ESP32 Datasheet V3.4



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