Troubleshooting; Introduction; Highlights; Prostart Ii Functions - Semtech XE8000 ProStart II User Manual

9

TROUBLESHOOTING

9.1

INTRODUCTION

This section is intended to help the ProStart II users to perform basic hardware debugging
9.2

HIGHLIGHTS

This chapter contains the following points:
•

ProStart II functions

•

Programming phase

•
Whole programming troubleshooting procedure
•
General ProStart II test procedure
9.3 PROSTART II FUNCTIONS
The power LED is not on.
Possible causes :1 The "on/off" switch is in "off" position
2 The power supply is not at 9VDC
3 The power supply is inverted (short circuit on the supply, diode protected)
4 The fuse has blown
All the XE8000MP LEDS are lit at startup
Possible causes :1 When using an XE8000EV108 eval board, remove the EEPROMS jumpers br6 & br5 and
push the RESET button of the XE8000MP
The ProStart II doesn't answer to the PC
Possible causes : 1 If the power LED is off, see Problem 1
2 The serial cable is disconnected at one end
3 The selected COM port is wrong
4 The serial cable is not connected to PROG labeled DB9 connector (near power supply sw)
5 Press the reset button on the XE8000MP, the LEDs labeled ISD & PROG must blink shortly
then they must be off. If this is not the case the board must be shipped back to your
SEMTECH representative.
The ProStart II CPLD and regulators seems to be too hot
Causes : 1 The power consumption of the CPLD is relatively high, thus it is hot but it's normal
temperature for this element.
2 The regulators are at their maximum output current thus their temperatures are also normal.
9.4 PROGRAMMING PHASE
The ProStart II answers no chip detected
Possible causes : 1 If you are using a EV board verify that the chip is present and correctly inserted.
2 If the chip is correctly inserted, try to move the chip a little bit and close the zif socket again.
3 For on-board programming, verify that the programming signals are correctly connected
specially TESTIN and TESTOUT
4 Short circuit the resistor labelled R13 on the XE8000MP.
5 Are your XELoader & Firmwares up to date? see on
The ProStart II answers that it is unable to erase flash.
Possible causes : 1 Does the Prog LED light up? If not check if the power supply is not limited in current.
2 The chip is faulty
3 The High voltage is not correctly generated. Please measure the 12 Volts on the B2
testpoint
4 Are your XELoader & Firmwares up to date? see on
The ProStart II answers "unable to write the data".
Possible causes : 1 The chip has been written to more than the maximum numbers of cycles, you can try to
restart the upload
2 Are your XELoader & Firmwares up to date? see on
The ProStart II answers "unable to read checksum".
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XE8000 ProStart II
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