8-28
DSP56309UM/D MOTOROLA
Serial Communication Interface (SCI)
GPIO Signals and Registers
Note:
A hardware RESET signal or a software RESET instruction clears all PRR bits.
shows the port signal configurations.
8.5.3
Port E Data Register (PDRE)
The read/write, 24-bit PDRE is used to read or write data to or from SCI GPIO signals.
Bits PD[2:0] are used to read or write data from or to the corresponding port signals if
they are configured as GPIO. If a port signal[i] is configured as a GPIO input, then the
corresponding PD[i] bit reflects the value of this signal. If a port signal[i] is configured as
a GPIO output, then the value of the corresponding PD[i] bit is reflected on this signal.
Bits of the Port E data register appear in
Figure 8-9
Port E Direction Register (PRRE)
Table 8-4
Port Control Register and Port Direction Register Bits
PC[i]
PDC[i]
Port Signal[i] Function
1
1 or 0
SCI
0
0
GPIO input
0
1
GPIO output
0
1
2
3
4
5
6
7
PDC0
PDC1
PDC2
Direction Control Bits: 1 = Output
0 = Input
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Reserved Bit, Read as 0, Should be Written with 0 for Future Compatibility
AA0696
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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