TC1920 Datasheet, PDF (33/78 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1920
Preliminary
CAN Interface (TwinCAN)
Figure 10 shows a global view of the functional blocks of the TwinCAN module.
TwinC AN M odule Kernel
C lock
f_CAN
C on tro l
CAN
Node A
CAN
Node B
TXDCA
Address
Decoder
M essage
O bje ct
B uffe r
RXDCA
TXDCB
Port
C o n tro l
Interrupt
C on tro l
TwinCAN Control
RXDCB
MCB04515
Figure 10 General Block Diagram of the TwinCAN Interfaces
TwinCAN Features:
• CAN functionality according to CAN specification V2.0 B active.
• Dedicated control registers are provided for each CAN node.
• A data transfer rate up to 1MBaud is supported.
• Flexible and powerful message transfer control and error handling capabilities are
implemented.
• Full-CAN functionality: 32 message objects can be individually
– assigned to one of the two CAN nodes,
– configured as transmit or receive object,
– participate in a 2,4,8,16 or 32 message buffer with FIFO algorithm,
– setup to handle frames with 11 bit or 29 bit identifiers,
– provided with programmable acceptance mask register for filtering,
– monitored via a frame counter,
– configured to Remote Monitoring Mode.
• Up to eight individually programmable interrupt nodes can be used.
• CAN Analyzer Mode for bus monitoring is implemented.
The TwinCAN module has four IO lines. The TwinCAN module is further supplied by a
clock control, interrupt control, address decoding, and port control logic.
Data Sheet
29
V 1.3, 2003-10