Civil Engineering Reference
In-Depth Information
Fig. 3.5
RS-CAN architecture
• 192 receive objects, shared flexibly by user configuration between
− up to 48 commonly shared receive message buffers for mailbox reception
− up to eight commonly shared receive FIFO units, variable in depth up to 128
messages per FIFO
− up to three multi-purpose FIFO units per channel (nine in total), variable in
depth up to 128 messages per FIFO.
• 192 applicable acceptance filtering rules, including 29-bit identifier masking,
masking for remote and extended frames, data length control (DLC) filtering,
and GW hardware routing rules. Up to eight-way reception is possible, so that
a received message can be stored into up to eight different locations in parallel,
including an additional software identifier (Hardware Receive Handle (HRH)
number of AUTOSAR COM stack processing).
• 16 transmit message buffers per channel (in total 48 buffers), assigned flexibly
by user configuration to either
− one transmission queue per channel (three in total), using a variable subset of
the transmit message buffers
− up to three multi-purpose FIFO units per channel (nine in total), variable in
depth up to 128 messages per FIFO
− up to 16 standard (direct) transmit message buffers per channel (48 in total).
• 16 transmit history list (THL) entries per channel.
• Many interrupt sources, including:
