
MOTOROLA
MC68322 USER’S MANUAL
B-1
APPENDIX B
APPLICATIONS
The MC68322 provides a wide variety of configuration possibilities. The sample design
described in this section demonstrates the detailed components required to design and build
an MC68322-based laser printer. This design demonstrates the typical configuration of
printing systems for laser printers, ink jet printers, fax machines, copiers, and many other
paper and nonpaper handling applications. Also included in this section is a sample code
stub to set up a memory map.
The following schematics describe the required connections for the MC68322, a 512K
DRAM, DRAM SIMM, flash EPROM, random control logic, serial EEPROM, in-circuit
emulation option, parallel port, and generic print engine interface.
B.1 CONFIGURING THE MC68322
The MC68322 requires up to two clock sources to properly clock the device. Some designs
take advantage of a single oscillator to clock the MC68322. For example, if the video rate is
7.8MHz, then a 31.2MHz source could be used to clock CLK2 and VCLK. Several pull-up
resistors may be required to properly negate unused options on the MC68322. Figure B-1
illustrates the MC68322 connection.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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