Need a SD (memory card) controller chip.

Hi All,

I need a SD memory card controller chip, I also need to porting some
MCU code, and need UART interface, low speed as 9.6K is enough.

Best regards,
Boki.

Boki wrote:
> I need a SD memory card controller chip, I also need to porting some
> MCU code, and need UART interface, low speed as 9.6K is enough.

Do you mean something like this?

http://chipdos.com/

Marc

Boki =BCg=B9D=A1G

> Hi All,
>
> I need a SD memory card controller chip, I also need to porting some
> MCU code, and need UART interface, low speed as 9.6K is enough.
>
> Best regards,
> Boki.


Dear All,

Due to the cost, I hope it only support SD ( no need to suppor others,
ex: CF, MMC,...).


Best reagrds,
Boki.

On Wed, 06 Dec 2006 04:49:40 GMT, Marc Ramsey <marc@ranlog.comREMOVE> wrote:

>Boki wrote:
>> I need a SD memory card controller chip, I also need to porting some
>> MCU code, and need UART interface, low speed as 9.6K is enough.
>
>Do you mean something like this?
>
>http://chipdos.com/
>
>Marc

Or this : 
http://www.ghielectronics.com/details.php?id=1
(Page shows USB, but also supports SD cards)

Mike Harrison wrote:

> On Wed, 06 Dec 2006 04:49:40 GMT, Marc Ramsey <marc@ranlog.comREMOVE> wrote:
> 
> 
>>Boki wrote:
>>
>>>I need a SD memory card controller chip, I also need to porting some
>>>MCU code, and need UART interface, low speed as 9.6K is enough.
>>
>>Do you mean something like this?
>>
>>http://chipdos.com/
>>
>>Marc
> 
> 
> Or this : 
> http://www.ghielectronics.com/details.php?id=1
> (Page shows USB, but also supports SD cards)

Have a look at their support forum first, whether
it really works as announced, as later support is
slow to non-existent.

Rene
-- 
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net

SD cards must support the SPI interface. So any microcontroller with a built 
in SPI interface can control an SD card.

You can download the MMC card spec from SanDisk to get the details.

"Boki" <bokiteam@ms21.hinet.net> wrote in message 
news:1165378684.979093.4920@n67g2000cwd.googlegroups.com...
> Hi All,
>
> I need a SD memory card controller chip, I also need to porting some
> MCU code, and need UART interface, low speed as 9.6K is enough.
>
> Best regards,
> Boki.
> 

Nevo wrote:

> SD cards must support the SPI interface. So any microcontroller with a built
> in SPI interface can control an SD card.
>
> You can download the MMC card spec from SanDisk to get the details.
>

The MMC spec is not the same as the SD spec, unfortunately. One can get
a copy of the minimal SD spec for free but not the whole spec without
joining the club. The entire spec is necessary to fully implement SD.

I am using a device from Winbond that supports SD and SDIO, but I had
to sign NDAs to get the source. I have no doubt you will run into the
same issue.

Cheers

PeteS



> "Boki" <bokiteam@ms21.hinet.net> wrote in message
> news:1165378684.979093.4920@n67g2000cwd.googlegroups.com...
> > Hi All,
> >
> > I need a SD memory card controller chip, I also need to porting some
> > MCU code, and need UART interface, low speed as 9.6K is enough.
> >
> > Best regards,
> > Boki.
> >

Boki wrote:
> Hi All,
> 
> I need a SD memory card controller chip, I also need to porting some
> MCU code, and need UART interface, low speed as 9.6K is enough.
> 
> Best regards,
> Boki.
> 
Have a look at

http://members.aon.at/voegel

and related:

http://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewforum&f=9



-- 
Regards,

Adrian Jansen           adrianjansen at internode dot on dot net
Design Engineer         J & K Micro Systems
Microcomputer solutions for industrial control
Note reply address is invalid, convert address above to machine form.

"PeteS" <PeterSmith1954@googlemail.com> wrote in message 
news:1165428846.718235.173690@j72g2000cwa.googlegroups.com...
> Nevo wrote:

> The MMC spec is not the same as the SD spec, unfortunately. One can get
> a copy of the minimal SD spec for free but not the whole spec without
> joining the club. The entire spec is necessary to fully implement SD.
>
> I am using a device from Winbond that supports SD and SDIO, but I had
> to sign NDAs to get the source. I have no doubt you will run into the
> same issue.

I heard that:
1. SD is a superset of MMC, thus MMC code can use SD cards
2. The 4-bit SD interface isn't a big deal
3. Only the 'secure' aspects are closely guarded
4. The security has been cracked, so it isn't secure
5. Almost nobody uses the security features

So I presume one can get code to use SD cards without the complete 
specification.

PeteS =BCg=B9D=A1G

> Nevo wrote:
>
> > SD cards must support the SPI interface. So any microcontroller with a =
built
> > in SPI interface can control an SD card.
> >
> > You can download the MMC card spec from SanDisk to get the details.
> >
>
> The MMC spec is not the same as the SD spec, unfortunately. One can get
> a copy of the minimal SD spec for free but not the whole spec without
> joining the club. The entire spec is necessary to fully implement SD.
>
> I am using a device from Winbond that supports SD and SDIO, but I had
> to sign NDAs to get the source. I have no doubt you will run into the
> same issue.
>
> Cheers
>
> PeteS
>=20

Thanks a lot, I think NDA is not an issue. :)

Best regards,
Boki.