DESCRIPTION

The MB88121 is an application specific standard product (ASSP) which facilitates to add FlexRay connectivity to 8-bit, 16-bit and 32-bit microcontrollers that do not comprise embedded FlexRay protocol cores. The device features a FlexRay communication controller based on the ERAY* IP core provided by Bosch. The FlexRay communication controller complies with the protocol definition 2.1 of the FlexRay consortium. Fujitsu intends to update the communications controller when new protocol definitions are released. Several parallel and serial interfaces ** provide connectivity to a vast number of host processors. All types of host interfaces are selectable by mode pins that supersede any programming by the user. The configurable parallel host interface connects to most 8-bit, 16-bit and 32-bit microcontrollers. A DMA support unit avoids that the application on the host processor has to wait until a message buffer becomes available for reading or writing.

The MB88121 is operated from a single 5.0 V supply (applies to MB88121B) and includes an on board voltage regulator that provides 1.8 V to the internal core. The internal PLL circuit provides an internal clock of 80 MHz from external quartz that can have these values: 4 MHz, 5 MHz, 8 MHz or 10 MHz. Alternatively the user may choose to drive the clock input with a square wave signal from the host processor.

FEATURES

• FlexRay communication controller supporting protocol version 2.1 using ERAY IP core from Bosch.
• Configurable parallel host interface compatible with most 8-bit, 16-bit and 32-bit microcontrollers.
• SPI interface (4 Mbit/s) **
• DMA support unit
• Input clock 4/5/8/10 MHz quartz or square wave input
• 0.18µm CMOS Process Technology
• 5.0 V single voltage supply, internal voltage regulator for 1.8 V core voltage
• Low voltage monitoring support
• Package : 64-pin* plastic LQFP

INFORMATION

Click for information on FLEXRAY-FPGA-EVA-KIT-369

DOCUMENTATION

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PDF MB88121 User's Manual (266 pages, 2.55 MB)