CPLD as bi-directional BUS switch?

[darksir]

Hi boys,
please can you help me?
I need switch two SD cards for two MCUs. Only 1 SD to 1 MCU at one time. So I need 2 or 4 pins as selector. Select one of two SD and select one of two processors.
It will be bus selector, or bus switch if you want.
SD card have 6bits of bus. Can I use CPLD for this? Can CPLD drive biderectional? I am totally newbie in CPLD. I found XILINX XC9536XL. This type has enough I/O links. But is this good idea? Is this easy solution?

Many thanks for tips,
Petr

 

[shaiko]

Yes you can - quite easily.
Are you familiar with any HDL ?

 

[darksir]

Many thanks for reply.
No, I don´t know any HDL language, I know only ASM and C languages... But I have downloaded logic function schematic of this application solution from google. Is it possible to "click" this logic schematic in CPLD IDE? I found XILINX webpack, is it good for my idea?

I have JTAG programmer, etc, but I have absolutely no experience with CPLD yet

Petr

Yes you can - quite easily.
Are you familiar with any HDL ?

 

[shaiko]

It is possible - but who guarantees it would work ?
As I said - your design can easily be implemeted on a CPLD\FPGA but I strongly suggest you learn either VHDL\VERILOG before you start this project instead of trying to cut corners by copy\pasting some googled schematic.