6-20
DSP56309UM/D MOTOROLA
Host Interface (HI08)
HI08-External Host ProgrammerÕs Model
routine must read or write the appropriate HI08 register (e.g., clearing HRDF or HTDE)
to clear the interrupt. For host command interrupts, the interrupt acknowledge from the
DSP56309 program controller clears the pending interrupt condition.
6.6
HI08-EXTERNAL HOST PROGRAMMERÕS MODEL
The HI08 is a simple, high speed interface to a host processor. To the host bus, the HI08
appears to be eight byte-wide registers. Separate transmit and receive data registers are
double-buffered to allow the DSP core and host processor to transfer data efficiently at
high speed. The host can access the HI08 asynchronously by using polling techniques or
interrupt-based techniques.
The HI08 appears to the host processor as a memory-mapped peripheral occupying
eight bytes in the host processor address space, as in
HI08 registers include the following:
¥ A control register (ICR)
¥ A status register (ISR)
¥ Three data registers (RXH/TXH, RXM/TXM, and RXL/TXL)
¥ Two vector registers (IVR and CVR)
Figure 6-11
HSR-HCR Operation
AA0667
15
X:HCR
X:HSR
0
Enable
HF3
HF2
HCIE
HTIE
HRIE
HCR
HF1
HF0
HCP
HTDE HRDF
HSR
Status
DSP Core Interrupts
Receive Data Full
Transmit Data Empty
Host Command
15
0
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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