Phytec kitCON-161CS, Руководство по оборудованию

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kitCON-161CS/JC/JI
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PHYTEC Meßtechnik GmbH 1999 L-356e_2
7.2 Second CAN-interface on C161CS
A second CAN-interface is available if the kitCON-161CS/JC/JI is
equipped with a C161CS controller. The second on-chip Full-CAN-
Controller has the same features as the first one.
When utilizing the second CAN-interface the portpins P4.4 (RXDC)
and P4.7 (TXDC) should not be connected to any other circuitry. This
leads on a 1 MB maximum directly accessible address space because
P4.4 can not be used as address line A20. The second CAN-bus can
be connected directly to DB9-plug P3. The pinout of the DB9-plug P3
is shown in Figure 18 . Ensure that Jumper JP2 is set to 1+2 and 3+4
and that Jumper JP9 is set to 2+3. The CAN1-signals from the con-
troller are also present at pin 39 and pin 44 of the kitCON-connector.
The programming of the CAN1-controller is done by means of con-
trol-registers, which are mapped into segment 0 of the normal
memory area of the controller at the addresses 00:EE00h through
00:EEFFh.
A detailed description of the registers and how to program the con-
troller can be read in the corresponding controller manual of the
C167CS.
Note:
When any CAN interface is to be used the segment address output on
Port 4 must be limited t 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.
DB9-plug P3
Pin 7: CAN2_H
Pin 3,6,8: CAN_GND
Pin 2: CAN2_L
Figure 18: Pinout of the DB9-plug P3 (CAN2-interface)(front view)
1
2
3
4
7
6
5
8
9