SJA1124

SJA1124 Quad LIN commander transceiver with LIN commander controller Rev. 2 — 26 August 2022 Product data sheet 1 General description The SJA1124 is a quad Local Interconnect Network (LIN) commander channel device. Each of the four channels contains a LIN commander controller and LIN transceiver with commander termination. LIN commander frames are transferred to the physical LIN bus via the LIN physical layer. The SJA1124 is primarily intended for in-vehicle subnetworks using baud rates up to 20 kBd and is compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, ISO 17987-4:2016 (12 V LIN) and SAE J2602-1. It is available in two variants, SJA1124A and SJA1124B; see Section 3 for details. A Serial Peripheral Interface (SPI) and an interrupt output provide the interface between the SJA1124 and a microcontroller. Transmit data streams received on the SPI are converted by the SJA1124 into LIN commander frames transmitted on the LIN bus. The LIN commander frames are transmitted as optimized bus signals shaped to minimize ElectroMagnetic Emission (EME). The LIN bus output pins are pulled HIGH via internal LIN commander termination resistors. Data streams received on the LIN bus input pins can be read by the microcontroller via the SPI. Power consumption is very low in Low Power mode. However, the SJA1124 can still be woken up via the LIN pins and the SPI interface. 2 Features and benefits 2.1 General Four LIN commander channels: – LIN commander controller – LIN transceiver – LIN ...