MPC5xxx中的主题 Re: C90FL Flash erase Question

C90FL Flash erase Question

youngguekim — Tue, 25 Oct 2016 07:43:00 GMT

Hi. I am using MPC5644A and want to erase Flash memory by using C90FL Driver.

FlashErase have Parameters(in) : lowEnabledBlocks, midEnabledBlocks, highEnabledBlock.

I don't know What I should put a data in lowEnabledBlocks, midEnabledBlocks, highEnabledBlock.

lowEnableBlocks	M1	M0	L9	L8	L7	L6	L5	L4	L3	L2	L1	L0
data	0	0	0	0	0	0	0	0	0	0	0	0
midEnabledBlocks											M0	L0
data											0	0
highEnabledBlock						H6	H5	H4	H3	H2	H1	H0
data						0	0	0	0	0	0	0

is it right????

if i want to erase 0x4000 Block, 0x1_0000 block, 0x0004_0000 block, 0x00C_0000 block, 0x0020_0000 block

What should I deal with lowEnabledBlocks, midEnabledBlocks, highEnabledBlock Parameters

MPC5644A flash memory

FlashErase Function

Re: C90FL Flash erase Question

davidtosenovjan — Tue, 25 Oct 2016 11:01:24 GMT

Yes, it is right if you mean physical to logical address mapping.
Only I would note that the logical block is being selected by logic 1 in the particular bit-mapped position.

Re: C90FL Flash erase Question

youngguekim — Tue, 25 Oct 2016 11:43:14 GMT

midEnabledBlock is L0 and M0 of Flash B??

As you say, midEnabledBlock is just 2 bit ??

but in Datasheet MPC5644A

High-Address Space Block Select Register is 10bit

Mid-Address Space Block Select Register is 2bit

Low-Address Space Block Select Register is 6bit

is this not relevant????

Re: C90FL Flash erase Question

davidtosenovjan — Tue, 25 Oct 2016 12:33:44 GMT

No, it is not. With using of SSD driver, user uses logical address mapping. midEnabledBlock has only 2 bits.

Re: C90FL Flash erase Question

youngguekim — Tue, 25 Oct 2016 15:00:00 GMT

I tried to erase Flash memory '0x3_0000~ 40_0000' to use Function 'pFlashErase' (0x0000~0x3_0000 is Bootloader)

I set

lowEnabledBlocks = 0xE00 = 0b1110_0000_0000

midEnabledBlocks = 0x3 = 0b11

highEnabledBlock = 0x3F = 0b11_1111

but the area '0x4_0000~0x6_0000' and 0x3F_0000..' is not erased..(check it by trace32)

I tried again

lowEnabledBlocks = 0xFFFF_FFFF

midEnabledBlocks = 0xFFFF_FFFF

highEnabledBlock = 0xFFFF_FFFF

and the area '0x4_0000~0x6_0000' and 0x3F_0000..' is erased exactly.

What is the problem??

Thank you for your help

Re: C90FL Flash erase Question

davidtosenovjan — Wed, 26 Oct 2016 11:49:02 GMT

I have just it and it works normally to me.

lowEnabledBlocks = 0x0E00 followed by erase sequence erases 0x0003_0000-0x0007_FFFF

I don't see any issue.

Re: C90FL Flash erase Question

youngguekim — Wed, 26 Oct 2016 23:07:18 GMT

Thank you very much

it works well