Phytec kitCON-161CS, Hardware Manual

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The CAN-Interface
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PHYTEC Meßtechnik GmbH 1999 L-356e_2
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7 The CAN-Interface
The kitCON-161CS/JC/JI can be equipped with a C161CS or a
C161JC controller. One of the special features of these derivatives is
the on-chip Full-CAN-Controller (two with C161CS) which enables
the kitCON-161CS/JC/JI to be run within a CAN-network. Running
the C161 controller at 20 MHz CPU clock, a bit rate of up to 1 MB
can be achieved.
Programming of the CAN-controller is done by means of control-
registers, which are mapped into segment 0 of the normal memory
area of the controller at the addresses 00:EF00h through 00:EFFFh.
A detailed description of the registers and how to program the
controller can be read in the corresponding controller manual of the
C161Cx..
Note:
When any CAN interface is to be used the segment address output on
Port 4 must be limited to 4-bits i.e. A19…A16 (refer to
section 4.12.3). This is necessary to enable the alternate function of
the CAN interface pins.
7.1 First CAN-interface
When utilizing the CAN-interface portpins P4.5 (RXDC) and P4.6
(TXDC) should not be connected to any other circuitry. The CAN-bus
can be connected directly to DB9-plug P2. The pinout of the DB9-
plug P2 is shown in Figure 17. The CAN-signals from the controller
are also present at pin 40 and pin 43 of the kitCON-connector.
DB9-plug P2
Pin 9: CAN_VCC
Pin 7: CAN_H
Pin 3,6: CAN_GND
Pin 2: CAN_L
Figure 17: Pinout of the DB9-plug P2 (CAN-interface)(front view)
1
2
3
4
7
6
5
8
9