7-18
DSP56309UM/D MOTOROLA
Enhanced Synchronous Serial Interface (ESSI)
ESSI Programming Model
by the frame sync signal going high). When FSP is set, the frame sync signal polarity is
negative (i.e., the frame start is indicated by the frame sync signal going low).
Either a hardware RESET signal or a software RESET instruction clears FRB.
7.4.2.10
CRB Clock Polarity (CKP) Bit 11
The CKP bit controls on which bit clock edge data and frame sync are clocked out and
latched in. If CKP is cleared, the data and the frame sync are clocked out on the rising
edge of the transmit bit clock and latched in on the falling edge of the receive bit clock. If
CKP is set, the data and the frame sync are clocked out on the falling edge of the transmit
bit clock and latched in on the rising edge of the receive bit clock.
Either a hardware RESET signal or a software RESET instruction clears CKP.
7.4.2.11
CRB Synchronous /Asynchronous (SYN) Bit 12
SYN controls whether the receive and transmit functions of the ESSI occur
synchronously or asynchronously with respect to each other; see
on page 7-20. When SYN is cleared, the ESSI is in asynchronous mode, and separate
clock and frame sync signals are used for the transmit and receive sections. When SYN is
set, the ESSI is in synchronous mode and the transmit and receive sections use common
clock and frame sync signals. Only in synchronous mode can more than one transmitter
be enabled.
Either a hardware RESET signal or a software RESET instruction clears SYN.
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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