4-16
DSP56309UM/D MOTOROLA
Core Configuration
DMA Request Sources
4.5
DMA REQUEST SOURCES
The DMA request source bits (DRS[4:0]) in the DMA control/status registers) encode the
source of DMA requests used to trigger DMA transfers. The DMA request sources can
be internal peripherals or external devices requesting service through the IRQA, IRQB,
IRQC, or IRQD signals.
describes the meanings of the DRS bits.
Ñ
TIMER2 Overflow Interrupt
Lowest
TIMER2 Compare Interrupt
Table 4-5
DMA Request Sources
DMA Request Source Bits
DRS4... DRS0
Requesting Device
00000
External (IRQA signal)
00001
External (IRQB signal)
00010
External (IRQC signal)
00011
External (IRQD signal)
00100
Transfer done from DMA channel 0
00101
Transfer done from DMA channel 1
00110
Transfer done from DMA channel 2
00111
Transfer done from DMA channel 3
01000
Transfer done from DMA channel 4
01001
Transfer done from DMA channel 5
01010
ESSI0 Receive Data (RDF0 = 1)
01011
ESSI0 Transmit Data (TDE0 = 1)
01100
ESSI1 Receive Data (RDF1 = 1)
Table 4-4
Interrupt Source Priorities within an IPL (Continued)
Priority
Interrupt Source
Содержание DSP56309
Страница 25: ...xxii DSP56309UM D MOTOROLA Figure D 25 Port E Registers PCRE PRRE PDRE D 39 ...
Страница 30: ...MOTOROLA DSP56309UM D 1 1 SECTION 1 DSP56309 OVERVIEW ...
Страница 47: ...1 18 DSP56309UM D MOTOROLA DSP56309 Overview DSP56309 Architecture Overview ...
Страница 48: ...MOTOROLA DSP56309UM D 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Страница 85: ...2 38 DSP56309UM D MOTOROLA Signal Connection Descriptions OnCE JTAG Interface ...
Страница 86: ...MOTOROLA DSP56309UM D 3 1 SECTION 3 MEMORY CONFIGURATION ...
Страница 104: ...MOTOROLA DSP56309UM D 4 1 SECTION 4 CORE CONFIGURATION ...
Страница 124: ...MOTOROLA DSP56309UM D 5 1 SECTION 5 GENERAL PURPOSE I O ...
Страница 125: ...5 2 DSP56309UM D MOTOROLA General Purpose I O 5 1 INTRODUCTION 5 3 5 2 PROGRAMMING MODEL 5 3 ...
Страница 128: ...MOTOROLA DSP56309UM D 6 1 SECTION 6 HOST INTERFACE HI08 ...
Страница 166: ...MOTOROLA DSP56309UM D 7 1 SECTION 7 ENHANCED SYNCHRONOUS SERIAL INTERFACE ESSI ...
Страница 212: ...MOTOROLA DSP56309UM D 8 1 SECTION 8 SERIAL COMMUNICATION INTERFACE SCI ...
Страница 241: ...8 30 DSP56309UM D MOTOROLA Serial Communication Interface SCI GPIO Signals and Registers ...
Страница 242: ...MOTOROLA DSP56309UM D 9 1 SECTION 9 TRIPLE TIMER MODULE ...
Страница 269: ...9 28 DSP56309UM D MOTOROLA Triple Timer Module Timer Operational Modes ...
Страница 270: ...MOTOROLA DSP56309UM D 10 1 SECTION 10 ON CHIP EMULATION MODULE ...
Страница 302: ...MOTOROLA DSP56309UM D 11 1 SECTION 11 JTAG PORT ...
Страница 369: ...C 22 DSP56309UM D MOTOROLA DSP56309 BSDL Listing ...
Страница 370: ...MOTOROLA DSP56309UM D D 1 APPENDIX D PROGRAMMING REFERENCE ...
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