Espressif ESP32 Technical Reference Manual page 555

21 Two-wire Automotive Interface (TWAI)
Figure 21-5. Layout of a Bit
Figure 21-6. TWAI Overview Diagram
Configuration Registers
The configuration registers store various configuration options for the TWAI controller such as bit rates, operating
mode, Acceptance Filter etc. Configuration registers can only be modified whilst the TWAI controller is in Reset
Mode (See Section 21.5.1).
Command Register
The command register is used by the CPU to drive the TWAI controller to initiate certain actions such as trans-
mitting a message or clearing the Receive Buffer. The command register can only be modified when the TWAI
controller is in Operation Mode (see section 21.5.1).
Interrupt & Status Registers
The interrupt register indicates what events have occurred in the TWAI controller (each event is represented by
a separate bit). The status register indicates the current status of the TWAI controller.
Espressif Systems 555 ESP32 TRM (Version 5.2)
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