11.07.2015 Views

section 7 - Index of

section 7 - Index of

section 7 - Index of

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

X MEMORYRAM/ROMEXPANSION24-Bit56KModuleADDRESSGENERATIONUNIT1----:-:-::::=---1·-1·----'--I'-~ EXTERNALI-~;:'--I-I----II--J ADDRESS 1--4-_a:BUSSWITCHBUSCONTROL 1.--1-_1-«~oQ.INTERN.AJ...EXTERNALDATA ~.I.I---I,--II_-I.J._iliii"'''''--.T.-~ DATA BUSS~~HSWITCH 14I ..... ~d'-DATAALU24X24+56~56·BIT MACTWO 56-BIT ACCUMULATORSOnCEllIMODCINMIMODBIIRQBMODAIIRQARESETFigure 9-2 DSP56K Block Diagram_16BITS_24BITS9.2.1 Phase Detector and Charge Pump Loop FilterThe Phase Detector (PO) detects any phase difference between the external clock(EXTAL) and an internal clock phase from the frequency multiplier. At the point wherethere is negligible phase difference and the frequency <strong>of</strong> the two inputs is identical, thePLL is in the "locked" state.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!