SJA1000 datasheet by NXP Semiconductors

SJA1000 Frequently Asked Questions (FAQs)

• What is the maximum number of nodes that can be connected to the SJA1000?
  The SJA1000 can support up to 32 nodes in a CAN bus network, but this number can be limited by the physical layer and the specific application requirements.
• How does the SJA1000 handle bus faults and error detection?
  The SJA1000 has built-in error detection and fault confinement mechanisms, including bit error detection, stuff error detection, and CRC error detection. It also has a bus fault detection mechanism that can detect and report bus faults, such as bus shorts or opens.
• Can the SJA1000 operate in a multi-master configuration?
  Yes, the SJA1000 can operate in a multi-master configuration, where multiple nodes can transmit data on the CAN bus simultaneously. However, this requires careful design and implementation to avoid bus conflicts and ensure reliable data transmission.
• What is the maximum data transfer rate supported by the SJA1000?
  The SJA1000 supports data transfer rates up to 1 Mbps, which is the maximum specified by the CAN 2.0B protocol.
• How does the SJA1000 handle power-on reset and power-down modes?
  The SJA1000 has a built-in power-on reset (POR) circuit that resets the device when power is applied. It also has a power-down mode that can be controlled by the host microcontroller to reduce power consumption when the device is not in use.