6-6
DSP56367
MOTOROLA
Core Configuration
Operating Modes
Table 6-3 DSP56367 Mode Descriptions
Mode 0
The DSP starts fetching instructions beginning at address $C00000. Memory accesses are performed using SRAM
memory access type with 31 wait states and no address attributes selected. Address $C00000 is reflected as address
$00000 on Port A pins A0-A17.
Mode 1
The bootstrap program loads instructions through Port A from external byte-wide memory, connected to the least
significant byte of the data bus (bits 7-0), and starting at address P:$D00000. The bootstrap code expects to read 3 bytes
specifying the number of program words, 3 bytes specifying the address to start loading the program words and then 3
bytes for each program word to be loaded. The number of words, the starting address and the program words are read
least significant byte first followed by the mid and then by the most significant byte. The program words will be stored in
contiguous PRAM memory locations starting at the specified starting address. After reading the program words, program
execution starts from the same address where loading started.The SRAM memory access type is selected by the values in
Address Attribute Register 1 (AAR1), with 31 wait states for each memory access. Address $D00000 is reflected as
address $00000 on Port A pins A0-A17.
Mode 2
The DSP starts fetching instructions from the starting address of the on-chip Program ROM.
Mode 3
Reserved.
Mode 4
Reserved.
Mode 5
In this mode, the internal PRAM is loaded from the Serial Host Interface (SHI). The SHI operates in the SPI slave mode,
with 24-bit word width.The bootstrap code expects to read a 24-bit word specifying the number of program words, a
24-bit word specifying the address to start loading the program words and then a 24-bit word for each program word to be
loaded. The program words will be stored in contiguous PRAM memory locations starting at the specified starting
address. After reading the program words, program execution starts from the same address where loading started.
Mode 6
Same as Mode 5 except SHI interface operates in the I
2
C slave mode with HCKFR set to 1 and the 100ns filter enabled.
Mode 7
Same as Mode 5 except SHI interface operates in the I
2
C slave mode with HCKFR set to 0.
Mode 8
The DSP starts fetching instructions beginning at address $008000. Memory accesses are performed using SRAM
memory access type with 31 wait states and no address attributes selected.
Mode 9
Reserved. Used for Burn-In testing.
Mode A
Reserved.
Mode B
Reserved.
Mode C
Instructions are loaded through the HDI08, which is configured to interface with an ISA bus. The HOST ISA bootstrap
code expects to read a 24-bit word specifying the number of program words, a 24-bit word specifying the address to start
loading the program words and then a 24-bit word for each program word to be loaded. The program words will be stored
in contiguous PRAM memory locations starting at the specified starting address. After reading the program words,
program execution starts from the same address where loading started. The Host Interface bootstrap load program may be
stopped by setting the Host Flag 0 (HF0). This will start execution of the loaded program from the specified starting
address.
Mode D
As in Mode C, but HDI08 is set for interfacing to Motorola HC11 microcontroller in non-multiplexed mode
Mode E
As in Mode C, but HDI08 is set for interfacing to Intel 8051 multiplexed bus
Summary of Contents for DSP56367
Page 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
Page 26: ...xxvi MOTOROLA List of Tables Table Number Title Page Number ...
Page 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Page 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Page 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Page 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Page 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Page 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Page 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Page 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Page 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Page 522: ...Index 6 MOTOROLA Index ...
Page 523: ......