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24bit data bus width
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RSKV

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24bit data bus width

lpcy posted on 10 Sep 2012 4:41 AM PST
Member
6 Forum Posts

is it possible to configure the data bus widt to 24 bits? I've checked the differences between 8, 16 and 32 bit, there only changes the 79th line in the last 8 bits (CY_U3P_PIB_GPIF_BUS_CONFIG).

I need 24 bit data width and SPI for my booting from SPI flash (firmware). If I look to the pin list in the datasheet , I can see that there is no intersection between data bus and SPI bus.

Re: 24bit data bus width

RSKV posted on 10 Sep 2012 05:24 AM PST
Cypress Employee
655 Forum Posts

Yes. You can configure the GPIF II data bus to 24-bit.

Please do the following change in the GPIF II descriptors.

0x00000068,  /*  CY_U3P_PIB_GPIF_BUS_CONFIG

Thanks,

sai kirshna.

Re: 24bit data bus width

RSKV posted on 14 Sep 2012 06:05 AM PST
Cypress Employee
655 Forum Posts

I checked about this internally and it looks like current SDK does not support the 24-bit data bus.

Regards,

sai krishna.

Re: 24bit data bus width

lpcy posted on 25 Oct 2012 11:52 PM PST
Member
6 Forum Posts

Is in SDK 1.2.1 or in future the possibility to change the data bus width to 24Bits? It is necessarry to have SPI boot, too, so I can't configure to 32Bits.

Regards,

lpcy

Re: 24bit data bus width

RSKV posted on 25 Oct 2012 12:23 AM PST
Cypress Employee
655 Forum Posts

Understood.

Yes. We do have a plan to release the SDK which supports 24-bit as well. Currently testing is going on for 24-bit but the time line for release is not fixed yet.

Thanks,

sai krishna.



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