[AM572x] How to use 16-Bit memory as 8-bit memory

matusan

Guru 10235 points

Hello, TI Experts,

I have a question from AM572x TRM(SPRUHZ6E).

Based on 16-Bit memory connection of "Figure 15-52. GPMC to 16-Bit Nonmultiplexed Memory",

If I set "GPMC_CONFIG1_i[13:12] DEVICESIZE=0x0:8bit",

Can we use this 16-Bit memory as 8-bit memory by using data-bus of lower 8-bit of this 16-bit memory?

(My expectation : This 16-bit memory ignores the data-bus of upper 8-bit , because of constant disabling gpmc_ben1.)

Is my understanding correct?

Best regards

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

You will be able to use only half of the memory this way, as address line A0 is not connected.

0 matusan over 9 years ago in reply to Biser Gatchev-XID

Guru 10235 points

Hi, Biser
Thank you for your quick reply.

If only half of the memory usecase is accepted, Can this 16-bit memory work properly as 8-bit memory with this setting?

Best, regards

0 Biser Gatchev-XID over 9 years ago in reply to matusan

TI__Guru**** 393215 points

You should check the memory datasheet for this.

0 matusan over 9 years ago in reply to Biser Gatchev-XID

Guru 10235 points

Hi, Biser

Thank you!

Best, regards

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[AM572x] How to use 16-Bit memory as 8-bit memory