Chip Revision: v3.1

Known Errors

• [CLK-3.22] ESP32 Cannot Be Used as the PHY Clock Source If Wi-fi and Ethernet Are Used at the Same Time
• [CPU-3.18] CPU Has Limitations When Accessing Peripherals in Chips
• [CPU-3.16] There Are Limitations to the CPU Access to 0x3ff0_0000 ~ 0x3ff1_efff and 0x3ff4_0000 ~ 0x3ff7_ffff Address Spaces
• [CPU-3.21] When a CPU Is Interrupted While Accessing Five Specific Fifo Registers, Subsequent CPU Accesses Will Get Halted
• [GPIO-3.6] For Pads With Both GPIO and RTC_GPIO Functionality, the GPIO Pull-up and Pull-down Configuration Register Fields Are Nonfunctional
• [GPIO-3.14] Within the Same Group of GPIO Pins, Edge Interrupts Cannot Be Used Together With Other Interrupts
• [GPIO-3.11] When Certain RTC Peripherals Are Powered on, the Inputs of GPIO36 and GPIO39 Will Be Pulled Down for Approximately 80 ns
• [LEDC-3.12] When the LEDC Is in Decremental Fade Mode, a Duty Overflow Error May Occur
• [TWAI-3.13.6] After Losing Arbitration, a Dominant Bit on the 3rd Bit of Intermission Is Not Interpreted as an SOF
• [TWAI-3.13.3] Message Transmitted After Bus-off Recovery Is Erroneous
• [TWAI-3.13.7] When the 8th Bit of the Error Delimiter Is Dominant, the Error Passive State Is Not Entered
• [TWAI-3.13.2] Error Status Bit Is Not Frozen During Bus-off Recovery
• [TWAI-3.13.5] Receiving an Erroneous Data Frame Can Cause the Data Bytes of the Next Received Data Frame to Be Invalid
• [TWAI-3.13.10] A Negative Phase Error Where |e| > SJW (N) Will Cause the Remaining Transmitted Bits to Be Left Shifted
• [TWAI-3.13.1] Receive Error Counter (REC) Is Allowed to Change Whilst in Reset Mode or Bus-off Recovery
• [TWAI-3.13.11] When the RX Fifo Overruns With 64 or More Messages, the RX Fifo Becomes Unrecoverable
• [TWAI-3.13.8] Suspend Transmission Is Included Even After Losing Arbitration
• [TWAI-3.13.9] When a Stuff Error Occurs During Arbitration Whilst Being Transmitter, Any Errors in the Subsequent Error/Overload Frame Will Not Increase the TEC
• [TWAI-3.13.4] Reading the Interrupt Register May Lead to a Transmit Interrupt Being Lost
• [UART-3.17] UART fifo_cnt Does Not Indicate the Data Length In Fifo Correctly
• [ULP-3.19] ULP Coprocessor And Touch Sensors Can Not Be Used In Deep-sleep Mode If RTC_PERIPH Power Domain Is Powered Up
• [WDT-3.15] {idf_target_name} Chip May Have A Live Lock Under Certain Conditions That Will Cause Interrupt Watchdog Issue
• [RTC-126] RTC Register Read Error After Wake-up from Light-sleep Mode