Reference Manual

Flex CPU Piggyback Board Hardware Reference
Table of Contents i
Table of Contents
INTRODUCTION.......................................................................................................................................................1
BOARD CONFIGURATION.....................................................................................................................................3
Non-Turbo CPU Base Configuration ...................................................................................................................3
Non-Turbo CPU Further Options.........................................................................................................................3
Turbo CPU Base Configuration ...........................................................................................................................3
Turbo CPU Further Options.................................................................................................................................3
HARDWARE SETUP.................................................................................................................................................5
Flex CPU Board Jumper Configuration...............................................................................................................5
Watchdog Timer Jumper.......................................................................................................................................5
Dual-Ported RAM Source Jumper........................................................................................................................5
Power-Up State Jumpers ......................................................................................................................................5
Firmware Load Jumper ........................................................................................................................................5
Flash Memory Bank Select Jumpers.....................................................................................................................5
Installation............................................................................................................................................................5
OPERATION OF THE FLEX CPU ..........................................................................................................................7
Operation as Non-Turbo CPU..............................................................................................................................7
Operation as a Turbo CPU...................................................................................................................................9
FLEX CPU BOARD JUMPER DESCRIPTIONS..................................................................................................11
E1: Watchdog Disable Jumper...........................................................................................................................11
E2: Dual-Ported RAM Port Select......................................................................................................................11
E4 – E6: Power-Up/Reset Load Source..............................................................................................................11
E7: Firmware Reload Enable.............................................................................................................................11
E10A, B, C: Flash Memory Bank Select.............................................................................................................12
CONNECTOR SUMMARY.....................................................................................................................................13
CONNECTOR PINOUTS.........................................................................................................................................15
J8 JRS232 (10-Pin Connector) ...........................................................................................................................15
SCHEMATICS