dvjcodec / ccdpcibustransceiver

Development board for interfacing Chrysler's legacy CCD/PCI-bus

CCDPCIBusTransceiver

Development board for interfacing Chrysler's legacy CCD/PCI-bus.

To be used with CCDLibrary and J1850VPWCore.

Get one or two on Tindie!

PCI-bus RX/TX-pin labels on the PCB are accidentally reversed! MC33390 has its pins named backwards.

This is an attempt to make a hybrid transceiver board to handle CCD-bus (SAE J1567) and PCI-bus (SAE J1850 VPW) communication at the same time. It is especially useful when a vehicle module gets replaced with an otherwise matching one that uses the other communication bus. In rare cases the only thing to do is to insert a 2-way gateway between the original vehicle modules and the foreign module.

The development board contains a custom CCD-bus transceiver with simple current drivers switched by N/P-MOSFETs for transmission and a voltage comparator for reception. PCI-bus is handled by the MC33390 chip.

An external microcontroller is needed, preferably an Arduino Mega, to handle the translations themselves and to provide the J1850 VPW protocol decoding function.

Pinout:

PCB	Arduino Mega	OBD2 connector
J1 GND	GND
J1 +5V	+5V
J1 TBEN	D4 or D13 *
J1 TX	RXD1
J1 RX	TXD1
J1 INT	D3
J1 CCD-		J1962-11
J1 CCD+		J1962-3
J1 GND		J1962-4
J2 +12V		J1962-16
J2 TX	D10
J2 RX	D11
J2 SLEEP	D5
J2 4XLP	D6
J2 PCI		J1962-2
J2 GND		J1962-4 (ignore if already connected)

• The TBEN pin definition must be changed from 4 to 13 in order for the CCD/SCI GUI to work properly.

As an extension and successor of the CCDBusTransceiver it can be used as CCD-bus transceiver or PCI-bus transceiver only.