Re: SPI slave select signals



praveen.kantharajapura@xxxxxxxxx wrote:
> Hi all,
>
> In an SPI interface i have got 4 slaves and one master
> What i wanted to know is wether the master can assert two slave
> selects(SS_N) simultaneously OR is there a restriction that master can
> assert only one slave select.

Depends on the design of the master. The NIOS II used in the Altera
FPGA permits me to asers any number of the SPI select lines.

But also as has been pointed out if the slaves all try to respond with
data you've got problems on the SOMI singal line.

gm

.