Heeltoe Design

Aesop

An inexpensive network platform supporting a single ethernet connection to CAN, serial, parallel and various automotive interfaces.

Based on a PIC microprocessor and combined with an ethernet interface the platform comes in several different configurations and provides a network based communications module which can support many different protocols.

The Aesop platform is capable of the following:

• 10Mb 10baseT Ethernet
• RS-232 Serial, from 2400-57600 baud (higher and low rates also available)
• CAN 1.2A, 2.0A/B
• J1850 VPW
• SCI serial
• 8 bit Parallel, 3.3v & 5v TTL
• JTAG, 3.3v & 5v TTL

Aesop Products:

Aesop + Serial

Serial interface only

Aesop + CAN

serial and CAN interface

Aesop + Vehicle

serial, CAN, J1850 and SCI interface

Aesop + Parallel

serial and Parallel interface

Aesop + Total

All interfaces: Serial, CAN, J1850, SCI and Parallel.

Technical details:

PIC18F458 microprocessor with Cirrus/Crystal CS8900A ethernet chip. Has interfaces for CAN, serial, parrallel as well as automotive protocols J1850 VPW and Chrysler SCI.

• The PIC18F458 has on-chip flash which contains the communication firmware.

• The firmware implements TCP/IP protocol and allows TCP connections to the board for sending and receiving mid-level protocol messages. Supports TCP, UDP, DHCP, IP V4, ARP.

• CAN 1.2A, 2.0A, 2.0B MCP2551 - meets or exceeds ISO11898-2 spec (ISO11898-2 high-speed CAN communication in road vehicles)

• J1850 interface uses the Motorola MC33390 transceiver. The protocol is implemented in firmware.

• Parallel port implemented with programmable logic. Provides a bidirectional 8 bit port with two data strobes and two non-dedicated pins. Each of the 8 bidirectional data pins can be configured as input or output. The pins can be strapped for either 3.3v or 5.v logic levels.

  In addition the parallel port can operate as a medium speed JTAG port.

• Powered by 7-12VDC @ 500ma. The PCB has an on-board regulator which steps the voltage down to 5vdc for the logic.