Espressif ESP32 Technical Reference Manual page 531

20 eFuse Controller
System parameter
Name
BLOCK1
BLOCK2
BLOCK3
20.3.4 The Use of System Parameters by Hardware Modules
Hardware modules are directly hardwired to the ESP32 in order to use the system parameters. Software cannot
change this behaviour. Hardware modules use the decoded values of system parameters BLOCK1, BLOCK2,
and BLOCK3, not their encoded values.
20.3.5 Interrupts
• EFUSE_PGM_DONE_INT: Triggered when eFuse programming has finished.
• EFUSE_READ_DONE_INT: Triggered when eFuse reading has finished.
20.4 Register Summary
The addresses in this section are relative to the eFuse Controller base address provided in Table
Address Mapping in Chapter
Name
eFuse data read registers
EFUSE_BLK0_RDATA0_REG
EFUSE_BLK0_RDATA1_REG
EFUSE_BLK0_RDATA2_REG
Espressif Systems
Bit Width Bit
[31:0]
[63:32]
[95:64]
[127:96]
256/192/128
[159:128]
[191:160]
[223:192]
[255:224]
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]
1 System and Memory.
Description
Returns data word 0 in eFuse BLOCK 0
Returns data word 1 in eFuse BLOCK 0
Returns data word 2 in eFuse BLOCK 0
Submit Documentation Feedback
Name
EFUSE_BLK1_RDATA0_REG
EFUSE_BLK1_RDATA1_REG
EFUSE_BLK1_RDATA2_REG
EFUSE_BLK1_RDATA3_REG
EFUSE_BLK1_RDATA4_REG
EFUSE_BLK1_RDATA5_REG
EFUSE_BLK1_RDATA6_REG
EFUSE_BLK1_RDATA7_REG
EFUSE_BLK2_RDATA0_REG
EFUSE_BLK2_RDATA1_REG
EFUSE_BLK2_RDATA2_REG
EFUSE_BLK2_RDATA3_REG
EFUSE_BLK2_RDATA4_REG
EFUSE_BLK2_RDATA5_REG
EFUSE_BLK2_RDATA6_REG
EFUSE_BLK2_RDATA7_REG
EFUSE_BLK3_RDATA0_REG
EFUSE_BLK3_RDATA1_REG
EFUSE_BLK3_RDATA2_REG
EFUSE_BLK3_RDATA3_REG
EFUSE_BLK3_RDATA4_REG
EFUSE_BLK3_RDATA5_REG
EFUSE_BLK3_RDATA6_REG
EFUSE_BLK3_RDATA7_REG
531
Register
Bit
[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]
1-6 Peripheral
Address Access
0x3FF5A000 RO
0x3FF5A004 RO
0x3FF5A008 RO
ESP32 TRM (Version 5.2)