Renesas CE2000-H8S Series, User Manual

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Appendix F : Frequently Asked Questions
1. WHY DIDN’T THE CLOCK INPUT TOGGLE IN THE PINVIEW WINDOW?
2. CAN CE WORK WITH OTHER USB DEVICES?
3. WHAT IS POTF? WHAT CAN IT DO?
4. HOW TO DISABLE THE POTF FUNCTION?
5. HOW TO MINIMIZE THE INTRUSION OF THE POTF?
6. HOW MUCH CURRENT WILL THE EMULATOR DRAW FROM THE
TARGET SYSTEM?
7. WHY IS THE PROGRAM HALTED AT AN ADDRESS THAT IS NOT
SPECIFIED IN THE PRESET COMBINATION BREAKPOINT?
8. WHAT IS THE CABLE_IN_N SIGNAL USED FOR?
9. HOW ABOUT MODE, CLOCK , RES, NMI & STBY SIGNALS? HOW DOES
THE EMULATOR CONTROL THESE SIGNALS?
10. WHY IS STBY PIN MASKED IN DEFAULT?
11. WHY IS C-LEVEL STEPPING NOT POSSIBLE?
12. WHY MUST THE PROGRAMMABLE FUNCTION GENERATOR (PFG) BE
PROGRAMMED AT POWER UP? WHAT IS THE PFG USED FOR?
13. WHY IS THE STATE CHANGES OF PORT NOT REFLECTED IN THE
PINVIEW WINDOW?
14. WHY CAN’T THE TWO MBYTES OF OPTIONAL MEMORY BE UTILIZED
FULLY?
15. WHY CAN’T THE OTP WORK AS ACCORDINGLY?
16. WHY IS THE SELECTION OF “TARGET CLOCK “ NOT AVAILABLE IN THE
SYSTEM SETUP WINDOW?
1. Why didn’t the clock input toggle in the PinView window?
The pinview window read the Pins status from the emulator at a constant interval. Thus, there is a
possibility that it always snaps the same level from the chip.
2. Can CE work with other USB devices?
CE can work with other USB devices. If another hub is used, CE must be the last device to be plugged-in.
3. What is POTF? What can it do?
POTF stands for Parallel On The Fly. It can read or write memory while the user program is running. In
this way, user can have the instant view of the outcome of the executing program. In order to access
these memory, the emulator will “stop” the running program for a short interval, approximately 150 ns,
for a word access.
4. How to disable the POTF function?
As long as the user do not modify the memory contents or perform a refresh memory window
command, POTF function will not be activated to intrude the real time operation of the user program.
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