Motorola MSC8101 ADS User Manual download pdf (Page 27)

MOTOROLA MSC8101ADS RevB User’s Manual 27

Operating Instructions

FIGURE 4-2 Switch SW2 - Description

4•2•3 ABORT Switch - SW3

The ABORT switch is normally used to abort program execution, this by issuing a level 0 non-

maskable interrupt to the Processor. If the ADS is in stand alone mode, it is the responsibility of

the user to provide means of handling the interrupt, since there is no resident debugger with the

MSC8101-ADS. The ABORT switch signal is denounced, and can not be disabled by software.

4•2•4 SOFT RESET (SRESET) Switch - SW4

The SOFT reset switch SW4 performs Soft Reset to the Processor internal modules, maintaining

it’s configuration (clocks & chip-selects) and SDRAMs’ contents. The switch signal is debounced,

and it is not possible to disable it by software.

4•2•5 DATA Bus Width Setting - SW5 & SW6.

Two switches SW5 & SW6 are using together for preparing the SDRAM Memory Banks for Host

Interface Mode when HDI16 interface is provided over Data Bus lines D32-D63. They should be

set in “32bit” position when DIP-Switch SW9/8 HOST CFG set ON (PPC bus supports Host I/F)

and vice versa - “64bit” when Host I/F disable.

SW2

EE0

EE1

EE2

EE3

EE4

EE5

EED

RESERVED

Set to ‘0’

=> Set to ’1’

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

nc...

1 ... 26 27 28 ... 119

No comments

Motorola MSC8101 ADS User Manual Page 27