J
John Larkin
Guest
Hi,
We designed a board that uses an Arria II GX45 chip. We didn't
initially figure to use all its resources, but the customer keeps
piling on requirements and we've run out of stuff inside. The original
chip was an EP2AGX45DF29C5N, 780 pin BGA. We stuffed a couple of
boards using the bigger GX95 equivalent, and recompiled with the same
design and pin list. It configures, and mostly works.
Two problems: all of the bank 6 I/Os are dead, all hi-z. And the PCI
Express is dead. We've worked mostly on the bank 6 issue. The three
VCCio6 pins are the same, and are known good. We can't, from the
documentation, find any pin differences that would take out this bank.
Any suggestions? Altera doesn't seem to want to help.
--
John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com
Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
We designed a board that uses an Arria II GX45 chip. We didn't
initially figure to use all its resources, but the customer keeps
piling on requirements and we've run out of stuff inside. The original
chip was an EP2AGX45DF29C5N, 780 pin BGA. We stuffed a couple of
boards using the bigger GX95 equivalent, and recompiled with the same
design and pin list. It configures, and mostly works.
Two problems: all of the bank 6 I/Os are dead, all hi-z. And the PCI
Express is dead. We've worked mostly on the bank 6 issue. The three
VCCio6 pins are the same, and are known good. We can't, from the
documentation, find any pin differences that would take out this bank.
Any suggestions? Altera doesn't seem to want to help.
--
John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com
Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators