Motorola DSP56012 User Manual
Page 62
3-2
DSP56012 User’s Manual
MOTOROLA
Memory, Operating Modes, and Interrupts
MEMORY, OPERATING MODES,
AND INTERRUPTS . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
DSP56012 DATA AND PROGRAM MEMORY . . . . . . . . . . . 3-3
X and Y Data ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Bootstrap ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
DSP56012 DATA AND PROGRAM MEMORY MAPS . . . . . 3-4
Reserved Memory Spaces . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Dynamic Switch of Memory Configurations . . . . . . . . . . . 3-7
Internal I/O Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
OPERATING MODE REGISTER (OMR). . . . . . . . . . . . . . . 3-11
DSP Operating Mode (MC, MB, MA)—Bits 4, 1, and 0. . 3-11
Program RAM Enable A (PEA)—Bit 2 . . . . . . . . . . . . . . 3-11
3.4.3
Program RAM Enable B (PEB)—Bit 3 . . . . . . . . . . . . . . 3-11
Stop Delay (SD)—Bit 6 . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
OPERATING MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
INTERRUPT PRIORITY REGISTER. . . . . . . . . . . . . . . . . . 3-14
PHASE LOCK LOOP (PLL) CONFIGURATION . . . . . . . . . 3-18
OPERATION ON HARDWARE RESET . . . . . . . . . . . . . . . 3-19