Hardware Description and Board Operation
MOTOROLA
M68VZ328ADS USER’S MANUAL
3-19
vector fetch is at the beginning of CSA0 space, *CSA0 should be connected to the boot
ROM in which the first two words are reset vectors. The default boot ROM of the
M68VZ328ADS has been programmed with monitor when it is shipped out from factory. Pls.
refer to Quick Installation part for detailed description on the selection of monitor and debug
port.
Bootstrap mode - When this mode is selected, the DragonBall-VZ will start its embedded
bootloader. User can use this mode to do simple debugging or reprogram the flash memo-
ries. For detailed bootstrap mode operation, please refer MC68VZ328 user’s manual.
3.5 LED INDICATORS
There are four LED indicators on the ADS which function as shown in Table 3-4.
The LED3 is connected to a counter. The counter is toggled by address line A1.
3.6 MEMORY
M68VZ328ADS provides on-board Flash memory and SDRAM, for application develop-
ment. They can be enabled or disabled individually by setting the corresponding DIP
switches.
3.6.1 Memory Map
The default memory map of M68VZ328ADS in normal mode is shown in Table 3-5. The chip
select range to all of the memory are software programmable. Users can reconfigure the
memory map for their applications.
Table 3-3. Operation Mode Setting
DIP Switch S2-8
Operation Mode
ON
Bootstrap
OFF
Normal
Table 3-4. Function of LED Indicators
Reference #
Color
Name
Function
LED1
Yellow
PD0
Status of PD0
LED2
Yellow
PD1
Status of PD1
LED3
Red
Heart Beat
Blinking heart beat indicates the system is "alive"
LED4
Green
Power
Power is applied to the system with right polarity
Table 3-5. M68VZ328ADS Default Memory Map
System Address
Memory
Assigned Chip Select
$00000000-$007FFFFF
8MB SDRAM BANK0
CSD0
$00800000-$00FFFFFF
8MB SDRAM BANK1 (not installed)
CSD1
$01000000-$011FFFFF
2MB FLASH BANK0
CSA0
$01200000-$013FFFFF
2MB FLASH BANK1
CSA1
$01400000-$FFFFEFFF
Unused
-
$FFFFF000-$FFFFFFFF
MC68VZ328 Internal Register
-
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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