[U-Boot-Users] parallel FLASH

[Erwin Rol]

On Wed, 2003-04-02 at 20:43, Reinhard Meyer wrote:
> Hello,
> 
> just wondering... how did you connect the adress lines?
> for 16-Bit Mode you need to connect down to A30, for 32-Bit Mode you need to
> connect down to A29
> 
> either you will have weird adressing during programming or you have to shift
> all adress lines

All address lines are shifted, there are actual 3 place to put flash on
the board. The PCB looks a bit like this.

A  B C D E  F

-  - - - -  - 
-  - - - -  -
-  - - - -  -
-  - - - -  -
-  - - - -  -


A and C  FLASH 1 32 bit
B and E  FLASH 16 BIT
D and F  FLASH 2 32 bit

- Erwin

> 
> Regards, Reinhard
> 
> ----- Original Message -----
> 
> I have a MPC860T board which can have one or two FLASH chips on it. When
> one FLASH chip is on it it is used in 16bit mode, if two FLASH chips are
> present it is used in 32 bit mode ( 2 * 16bit FLASH chips in parallel ).
> The initial chip select is set by a hardware jumper with the reset-word.
> 
> 
> 
> 
> 
> -------------------------------------------------------
> This SF.net email is sponsored by: ValueWeb: 
> Dedicated Hosting for just $79/mo with 500 GB of bandwidth! 
> No other company gives more support or power for your dedicated server
> http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/
> _______________________________________________
> U-Boot-Users mailing list
> U-Boot-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/u-boot-users
-- 
              Dipl.-Ing. Erwin Rol - Software Engineering
tel: +49-(0)8024-479377  gsm: +49-(0)171-6929198 fax: +49-(0)8024-479379
                        email: erwin at muffin.org
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
Url : http://lists.denx.de/pipermail/u-boot/attachments/20030402/80de47ac/attachment.pgp