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Flash Programmer Model TFP2 User’s Manual
8.2 VERIFICATION ERRORS
A typical dialog involving a verification error is shown below. In this case, the communication between
TFP2 and the target IC was established, but the programmed target image had at least one error, which
was discovered during the verify process.
>P
Programming Target Flash
Verifying Target Flash
Verification error.
FAIL
>
Likely causes for verification issues are:
?
?
?
?
?
Communication issues can look like a verification error if the signal quality and timing is marginal
– check the items listed above under Communication Errors.
See the hints given in Section 8.3 .
An emulator port signal is also connected to an LCD pin on the target board resulting in a
corrupted signal – provide a jumper that can isolate the LCD pin from the emulator signal(s)
during the flash programming process.
Mismatch between selected target flash size and actual target flash size – check the setting of the
Memory Size Selection Switch and compare the file size with the flash size given in the target IC
data sheet. For example, the 71M6534 has a flash size of 128 KB whereas the 71M6534H has a
flash size of 256 KB.
Mismatch between linked target file size and actual target flash size – check the linker settings
and linker report files.
File error – check the target file loaded into the TFP2. Reload the file, if necessary.
8.3 CABLE ISSUES AND MARGINAL TIMING
Cable issues and marginal timing can manifest themselves as intermittent communication errors and/or
verification errors. If the methods listed in the previous section Verification Errors do not help, a few un-
conventional fixes can be tried:
?
?
Raising the board voltage to 3.6 VDC.
Adding a resistor of 10 k ? between E_RXTX and V3P3.
8.4 FILE LOAD ERRORS
File load errors can occur when attempting to load the target image file into the TFP2 using
HyperTerminal. USB-to-serial converters sometimes misinterpret the XON/XOFF control sequences used
for flow control. These cases manifest themselves in stuck file loads or corrupted target images. The
solution is to move to a PC with a true serial interface (COM port).
Revision 2.3
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