Maker Pro
Maker Pro

Looking for a SPI to multiplexed adress/data bus 'bridge'

T

Thomas Heller

Jan 1, 1970
0
Good afternoon,

I need to replace the 80186 compatible CPU on a design from us
by a more modern CPU module that has no data bus but an SPI
interface.

I found some SPI-IO expander chips, I could probably use
a simple CPLD, but a ready-to-use bridge chip that converts
to a 8-bit multiplexed data/address bus would be very nice.

Does anyone know of such a chip?

Thanks,
Thomas
 
T

Thomas Heller

Jan 1, 1970
0
What *exactly* do you want to interface to? Why doesn't the I/O
expander work for you?

I want to achive higher data rates than I can get with byte-banging (?)
the IO-port.

Several devices are connected to the bus, among them an ADC, a DAC,
and a couple of FPGAs.
 
P

petrus bitbyter

Jan 1, 1970
0
Thomas Heller said:
Good afternoon,

I need to replace the 80186 compatible CPU on a design from us
by a more modern CPU module that has no data bus but an SPI
interface.

I found some SPI-IO expander chips, I could probably use
a simple CPLD, but a ready-to-use bridge chip that converts
to a 8-bit multiplexed data/address bus would be very nice.

Does anyone know of such a chip?

Thanks,
Thomas

Can't imagine a CPU without a databus. So I think you'll have to be more
specific about your needs.

petrus bitbyter
 
Top