8-24
DSP56309UM/D MOTOROLA
Serial Communication Interface (SCI)
Operating Modes
8.4.2
SCI Initialization
The correct way to initialize the SCI is as follows:
1. Send a hardware RESET signal or software RESET instruction.
2. Program SCI control registers.
3. Configure at least one SCI signal as other than GPIO.
TRNE
0
1
1
1
1
TCM
15
0
0
Ñ
Ñ
RCM
14
0
0
Ñ
Ñ
SCCR
SCP
13
0
0
Ñ
Ñ
COD
12
0
0
Ñ
Ñ
CD[11:0]
11Ð0
0
0
Ñ
Ñ
SRX
SRX [23:0]
23Ð16, 15Ð8, 7Ð0
Ñ
Ñ
Ñ
Ñ
STX
STX[23:0]
23Ð0
Ñ
Ñ
Ñ
Ñ
SRSH
SRS[8:0]
8Ð0
Ñ
Ñ
Ñ
Ñ
STSH
STS[8:0]
8Ð0
Ñ
Ñ
Ñ
Ð
Note: SRSHÑSCI Receive Shift Register, STSH Ñ SCI Transmit Shift Register
HWÑHardware reset is caused by asserting the external RESET signal.
SWÑSoftware reset is caused by executing the RESET instruction.
IRÑIndividual reset is caused by clearing PCRE (bits 0Ð2) (configured for
GPIO
).
STÑStop reset is caused by executing the STOP instruction.
1ÑThe bit is set during this reset.
0ÑThe bit is cleared during this reset.
Ñ Ñ The bit is not changed during this reset
Table 8-3
SCI Registers after Reset (Continued)
Register
Bit
Bit Mnemonic
Bit Number
Reset Type
HW
Reset
SW
Reset
IR
Reset
ST
Reset
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 ...
Страница 405: ......
Страница 409: ......