User manual

M
MCP250XX USER’S GUIDE
 2004 Microchip Technology Inc. DS51266C-page 35
Chapter 5. Other Capabilities of the Development Board
5.1 INTRODUCTION
The capabilities and configurations of the MCP2515 are discussed in this chapter.
5.2 HIGHLIGHTS
This chapter discusses:
• Oscillator Configurations
• Node A Prototyping Area and Header Pinout
• External CAN Bus Connections
5.3 OSCILLATOR CONFIGURATIONS
The MCP2515 is configured, by default, to use a common oscillator for all three CAN
nodes. While there are three oscillator sockets, only one is populated. The oscillator
sockets are connected together with their outputs. The two jumpers (JP1 and JP2) can
be used to disconnect the outputs and use individual oscillators for the nodes. The
jumpers are shorted by a trace on the bottom of the board by default. These traces can
be cut and jumper pins can be installed to control the oscillator output wiring. See
Figure 5-1 for details on the oscillator configurations.
FIGURE 5-1: OSCILLATOR SOCKET LAYOUT
Y1
Y2
Y3
Out Out Out
JP2
JP1
Shorted by trace on
bottom of board
To PC Node To Node A
To Node B