Coldfire and SDRAM

Hi,

According to the MCF5272 datasheet, and the  schematic, the address
line A22 and A23 of ColdFire are to be treated as SDBA0 and SDBA1 and
connected to BA0 and BA1 of the SDRAM respectively. But when the
register value is set according to the above, the SDRAM initialisation
faces problem.

But when i set a value in such a way that the address lines A23 and A24
of ColdFire are connected to BA0 and BA1 of SDRAM then it works fine.
Really strange !

How is this possible ?

Thx in advanse,
Karthik Balaguru

KBG wrote:

> But when i set a value in such a way that the address lines A23 and A24
> of ColdFire are connected to BA0 and BA1 of SDRAM then it works fine.
> Really strange !
> 
> How is this possible ?


Dodgy documentation?


TW