Freescale Semiconductor DSPD56362EVM, Руководство по модернизации

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3-2 DSPD56362EVM Upgrade Manual MOTOROLA
68HC11 SOURCE CODE DESCIPTION
SYSTEM-SPECIFIC CONFIGURATION
• Run InitAV2( ) function
• Run RunPatch( ) function.
7. Enable interrupts and wait for keypad inputs.
3.3 SYSTEM-SPECIFIC CONFIGURATION
The
InitAV3( )
function configures specific DSP registers for the EVM56362. However, other
systems may require different settings and this function may need to be modified. These system
differences may affect the following:
• Multiplication factor in the PCTL.
• Address attribute AAx signals for selecting external memory devices.
• Number of wait states for each AAx signal in the BCR.
• ESAI receive and transmit configuration.
Table 3-1 shows the default DSP register settings for the EVM56362.
Table 3-1 InitAV2 Default Settings
REGISTER ADDRESS VALUE DESCRIPTION
PLL PCTL 0xFFFFFD 0x0F000B DSP operating frequency of 96Mhz
BUS
INTERFACE AAR0 0xFFFFF9 0x0C063D Additional address line A18
AAR1 0xFFFFF8 0x080539 Map external EPROM access X/Y/P:$080000
to $0FFFFF
AAR2 0xFFFFF7 0x040639 Map external SRAM access X/Y/P:$040000
to $07FFFF
BCR 0xFFFFFB 0x0005E1 AAR0 1 wait state
AAR1 15 wait staes
AAR2 1 wait state
INTERRUPT
PRIORITY IPRP 0xFFFFFE 0x000187 ESAI interrupt priority level 2
DAX interrupt priority level 1
Timer, SHI interrupt level 0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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