6-16
DSP56309UM/D MOTOROLA
Host Interface (HI08)
HI08 DSP Side ProgrammerÕs Model
6.5.6.14
HPCR Host Chip Select Polarity (HCSP) Bit 13
If the HCSP bit is cleared, the host chip select (HCS) signal is configured as an active low
input and the HI08 is selected when the HCS signal is low. If the HCSP signal is set, HCS
is configured as an active high input, and the HI08 is selected when the HCS signal is
high.
6.5.6.15
HPCR Host Request Polarity (HRP) Bit 14
The HRP bit controls the polarity of the host request signals. In the single-host request
mode (HDRQ is cleared in the ICR), if HRP is cleared, and host requests are enabled
(HREN is set and HEN is set), the HREQ signal is an active low output. If HRP is set and
host requests are enabled, the HREQ signal is an active high output.
In the double-host request mode (HDRQ is set in the ICR), if HRP is cleared, and host
requests are enabled (HREN is set and HEN is set), the HTRQ and HRRQ signals are
active low outputs. If HRP is set, and host requests are enabled, the HTRQ and HRRQ
signals are active high outputs.
6.5.6.16
HPCR Host Acknowledge Polarity (HAP) Bit 15
If the HAP bit is cleared, the host acknowledge (HACK) signal is configured as an active
low input. The HI08 drives the contents of the IVR onto the host bus when the HACK
signal is low. If the HAP bit is set, the HACK signal is configured as an active high input.
The HI08 outputs the contents of the IVR when the HACK signal is high.
Figure 6-8
Dual Strobe Bus
Data
HWR
Data
HRD
In dual strobe bus, there are separate HRD and HWR signals that specify the access as being
a read or write access, respectively.
Read Data Out
Read Cycle
Write Cycle
Write Data In
AA0662
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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