Espressif ESP32-S2 Programming Manual page 825

Chapter 2. API Reference
SPI_PAD_CONFIG_CS (BLOCK1)
→
SPI_PAD_CONFIG_HD (BLOCK1)
→
SPI_PAD_CONFIG_WP (BLOCK1)
→
SPI_PAD_CONFIG_DQS (BLOCK1)
→
SPI_PAD_CONFIG_D4 (BLOCK1)
→
SPI_PAD_CONFIG_D5 (BLOCK1)
→
SPI_PAD_CONFIG_D6 (BLOCK1)
→
SPI_PAD_CONFIG_D7 (BLOCK1)
→
Usb Config fuses:
DIS_USB (BLOCK0)
→
USB_EXCHG_PINS (BLOCK0)
→
EXT_PHY_ENABLE (BLOCK0)
→
USB_FORCE_NOPERSIST (BLOCK0)
→
Vdd_Spi Config fuses:
VDD_SPI_FORCE (BLOCK0)
SPI_TIEH to config = False R/W (0b0)
→
VDD_SPI_XPD (BLOCK0)
on
→
VDD_SPI_TIEH (BLOCK0)
at reset
→
PIN_POWER_SELECTION (BLOCK0)
GPIO33..37, set when = VDD3P3_CPU R/W (0b0)
→
Wdt Config fuses:
WDT_DELAY_SEL (BLOCK0)
threshold at startup
→
Flash voltage (VDD_SPI) determined by GPIO45 on reset (GPIO45=High: VDD_
SPI pin is powered from internal 1.8V LDO
→
GPIO45=Low or NC: VDD_SPI pin is powered directly from VDD3P3_RTC_IO
resistor Rspi. Typically this voltage is 3.3 V).
→
To get a dump for all eFuse registers.
espefuse.py -p PORT dump
Connecting....
Detecting chip type... ESP32-S2
BLOCK0
00000000 00000000 00000000 00000000
→
MAC_SPI_8M_0
00000000 00000000 00000000 00000000
→
BLOCK_SYS_DATA
e80e3771 92d5ab7c 8787ae10 02038687 38e50403 8628a386
→
BLOCK_USR_DATA
00000000 00000000 00000000 00000000 00000000 00000000
→
Espressif Systems
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= 0 R/W (0b000000)
= False R/W (0b0)
= False R/W (0b0)
= False R/W (0b0)
= False R/W (0b0)
= False R/W (0b0)
= Connect to 1.8V LDO R/W (0b0)
= 0 R/W (0b00)
( ) [0 ] read_regs: 00000000
(BLOCK1 ) [1 ] read_regs: a1003a6e
(BLOCK2 ) [2 ] read_regs: bbb8337d
(BLOCK3 ) [3 ] read_regs: 00000000
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SPI CS pad
SPI HD (D3) pad
SPI WP (D2) pad
SPI DQS pad
SPI D4 pad
SPI D5 pad
SPI D6 pad
SPI D7 pad
Disables the USB OTG hardware
Exchanges USB D+ and D- pins
Enables external USB PHY
Forces to set USB BVALID to 1
Force using VDD_SPI_XPD and VDD_
ure VDD_SPI LDO
The VDD_SPI regulator is
The VDD_SPI power supply
Sets default power supply
SPI flash is initialized
Selects RTC WDT
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powered␣
voltage␣
for␣
timeout␣
via␣
00000000␣
00007cdf␣
c8b3130b␣
00000000␣
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Release v4.4