Espressif ESP32 Technical Reference Manual page 528

20 eFuse Controller
System parameter
Name
coding_scheme
console_debug_disable 1
abstract_done_0
abstract_done_1
JTAG_disable
download_dis_encrypt
download_dis_decrypt
download_dis_cache
key_status
BLOCK1
BLOCK2
BLOCK3
The process of programming system parameters is as follows:
1. Configure EFUSE_CLK_SEL0 bit, EFUSE_CLK_SEL1 bit of register EFUSE_CLK, and EFUSE_DAC_CLK_DIV
bit of register EFUSE_DAC_CONF.
2. Set the corresponding register bit of the system parameter bit to be programmed to 1.
3. Write 0x5A5A into register EFUSE_CONF.
4. Write 0x2 into register EFUSE_CMD.
5. Poll register EFUSE_CMD until it is 0x0, or wait for a program-done interrupt.
Espressif Systems
Width Bit
2 [1:0]
[0]
1 [0]
1 [0]
1 [0]
1 [0]
1 [0]
1 [0]
1 [0]
256/192/128 [31:0]
[63:32]
[95:64]
[127:96]
[159:128]
[191:160]
[223:192]
[255:224]
[31:0]
[63:32]
[95:64]
[127:96]
256/192/128
[159:128]
[191:160]
[223:192]
[255:224]
[31:0]
[63:32]
[95:64]
[127:96]
256/192/128
[159:128]
[191:160]
[223:192]
[255:224]
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Name
EFUSE_BLK0_WDATA6_REG
EFUSE_BLK1_WDATA0_REG
EFUSE_BLK1_WDATA1_REG
EFUSE_BLK1_WDATA2_REG
EFUSE_BLK1_WDATA3_REG
EFUSE_BLK1_WDATA4_REG
EFUSE_BLK1_WDATA5_REG
EFUSE_BLK1_WDATA6_REG
EFUSE_BLK1_WDATA7_REG
EFUSE_BLK2_WDATA0_REG
EFUSE_BLK2_WDATA1_REG
EFUSE_BLK2_WDATA2_REG
EFUSE_BLK2_WDATA3_REG
EFUSE_BLK2_WDATA4_REG
EFUSE_BLK2_WDATA5_REG
EFUSE_BLK2_WDATA6_REG
EFUSE_BLK2_WDATA7_REG
EFUSE_BLK3_WDATA0_REG
EFUSE_BLK3_WDATA1_REG
EFUSE_BLK3_WDATA2_REG
EFUSE_BLK3_WDATA3_REG
EFUSE_BLK3_WDATA4_REG
EFUSE_BLK3_WDATA5_REG
EFUSE_BLK3_WDATA6_REG
EFUSE_BLK3_WDATA7_REG
528
Register
Bit
[1:0]
[2]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
[31:0]
ESP32 TRM (Version 5.2)