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Address line problem on XC16x board

David Bacsa

Hi!

I'm trying to interface the 256K x 16 bit SRAM on Infineon's Starter Kit in 16 bit mux mode with the XC161CJ, with /CS1.

My problem is that A16..A18 address lines do not work. I could not detect the pulses with the scope, and the address bus test function also fails. Though 4 bit segment address (A16..A19) is set in Dave.

My settings:

EBCMOD0  =  0x4034
EBCMOD1  =  0x003F
FCONCS1  =  0x0031
TCONCS1  =  0x28A9
ADDRSEL1  =  0x4007

The dip switches:

S101: 0x01
S102: 0xBA
S102: 0x00
S104: 0xF0
S105: 0x0F
S106: 0x00

The lower 64KB seems to work alright, so I dont think there is a problem with the timing, I just cant reach the higher part of the SRAM. The SRAM is set at 0x400000 in uVision.

Is there anyone who has some suggestion for this problem?

Thanks,
David