Re: Question about sh-sci on SH7723

morimoto.kuninori
2009-04-09T02:03:53Z

Dear yoshii

Thank you for comment

> > I have question about sh-sci on SH7723.
> ...
> > seems return SCIF0_TXD value.
> At least, old chips like 7709/7750 have SCPTR bit multiplexed.
> It returns RXD when read, sets TxD when write.

Hmm.
At least 7786/7785/7763 have SCSPTR register.
It indicates RXD/TXD for me.

May be it is same as 7709/7750's SCPTR.
(I don't have these manual)

> What are SCPTR bits on SH7723 like?

But SH7723 doesn't have SCPTR/SCSPTR register.
Therefore, I thought that it used IO port.

So, I thought that it should read RXD pin if it use IO port.

> # I think you would better asking your boss to put the HW manual on WWW.

Oops !
Is SH7723's manual un-public one ?