User`s manual

Hardware Description and Board Operation

3-17 M68EZ328ADS v2.0 USER’S MANUAL MOTOROLA

3.2 CONTROL SWITCHES

There are two push buttons on the ADS which function as follows:

1. Reset Switch (SW2): When pressed, a hardware reset is generated to the

MC68EZ328 processor and resumes operation.

2. Abort Switch (SW1): This switch is used to generate a level 7 interrupt to the

MC68EZ328 processor for aborting normal software execution and returning control

to the debug monitor.

3.3 DIP SWITCHES

There are two DIP switch packs on the ADS board, S1 and S2. S1 is used to configure the

memory system and operation modes. S2 is used to enable the on-board peripheral such

as buzzer and touch panel controller. Table 3-1 and Table 3-2 show the description of each

switch.

Table 3-1. DIP Switch pack S1 Setting

Switch FUNCTION ON OFF

S1-1 UART Transceiver Enable Disable

S1-2 IrDA Module Enable Disable

S1-3 Buzzer Enable Disable

S1-4 Pen IRQ Enable Disable

S1-5 Chip Select of Touch Panel Controller Enable Disable

S1-6 Unused

S1-7 Unused

S1-8 Unused

Table 3-2. DIP Switch pack S2 Setting

Switch FUNCTION ON OFF

S2-1 CSA0 - FLASH0 Connected Disconnected

S2-2 CSA1 - FLASH1 Connected Disconnected

S2-3 CSD0 - EDO DRAM Connected Disconnected

S2-4 EMU Mode Enable Disable

S2-5 Bootstrap Mode Enable Disable

S2-6 Monitor Select SDS Metrowerks

S2-7 Unused

S2-8 Unused

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ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005