The new product enables multiplexing of automotive communications and reduces the number of wiring harnesses used in body control system applications, thus contributing to vehicle weight reduction. Compared to the Local Interconnect Network (LIN) protocol, the CXPI Response Interface Device's high response speed makes it ideal for applications such as steering wheel switches, instrument cluster switches, light switches, and door locks and mirrors.
The device has 16 GPIO pins: six of them can be switched to a 10-bit A/D converter input circuit, and four pins can be switched to four 8-bit PWM (pulse-width modulation) output circuits. The device is also equipped with an input monitoring function during standby mode, a switching matrix input function (max. 4 x 4), and an output function in case of communication interruption.
The standby current consumption of this device is only 10 µA, indicating minimal power consumption while in standby mode. Low electromagnetic interference (EMI) and high electromagnetic susceptibility (EMS) mean less noise is generated, simplifying system design. Furthermore, the device's high electrostatic discharge (ESD) characteristic makes it highly resistant to static electricity.
The TB9033FTG includes fault detection circuitry for over-temperature, over-voltage, and under-voltage. Furthermore, the device can predict fault conditions and automatically alert the control node, thus improving fault detection performance. The device's operating temperature range is -40 to 125 °C, and it complies with AEC-Q100 standards.
Toshiba is also developing a CXPI automotive communication controller receiver IC that can be switched between the command and response nodes via an external pin.
