MCA Block Diagram Signal Comparator Peak and Hold Reset ADC USB Threshold PIC
MCA Block Diagram Signal Comparator Peak and Hold Reset ADC USB Threshold PIC
Testing the PIC ADC ~40 μs; equivalent to 1/ or 25 kcps Looking into other ADCs from 400 kcps to 20 Mcps
USB Case 1 -Full speed -Bulk transfer -Can USB keep us with 1 Mcps? 1 ms frames Nineteen 64-byte transactions per frame Probably not…requires ~33% max rate Case 2 -High speed -Bulk transfer -Can USB keep us with 1 Mcps? 125 μs microframes Thirteen 512-byte transactions per microframe Yes, even at <.8% max rate Assumes transfer after 2500 pulses on average Also, how much time does USB take?