Crucially, implementation of the Traveo platform design at 40nm allows integration of all the functions of a hybrid instrument cluster:
- Communication is provided by up to six channels of Controller Area Network-Flexible Data (CAN-FD) interfacing. An Ethernet AVB media access controller (MAC) enables the device to communicate with a vehicle’s networking backbone. There is also a multi-function serial interface with up to 12 channels.
- Security of the cluster’s data and signals is safeguarded by the IC’s Secure Hardware Extension (SHE), a secure zone within which the device performs key storage, AES-128 data encryption/decryption and random number generation.
- Driving the electro-mechanical elements of the cluster – the MCU includes six stepper motor controllers to run needles for the speedometer, rev counter etc.
- Audio sub-system – a 10-input sound mixer combined with a stereo audio DAC is capable of generating a wide range of sophisticated sounds, and outputting them to the vehicle’s speakers over a two-channel I 2S interface. Cypress provides a sound authoring tool to support this function.
- LCD controller – the device can drive a TFT-LCD panel of 4 x 32 segments. The device provides a simple RGB888 video output.
- System control – the ARM Cortex-R5F core supports real-time operations and runs the Autosar 4.0.3 operating system. Real-time capability is crucial for safety-critical functions such as driving the speedometer needle.
This combination of capabilities makes the latest S6J33xx devices ideal for hybrid clusters with a small display: highly integrated, they enable designers to optimise the size and BoM cost of their system while providing for good-quality