AM6442: GPMC Setting

Hello Kanae, 

Thank you for the query.

Kanae said:

lso, TRM: 12.3.3.2.1 GPMC Modes states that 32-bit synchronous non-multiplexed is not supported,
but the following thread states that it can be supported.
Is 32-bit synchronous non-multiplexed actually configurable if we follow the thread?

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1025913/am6442-gpmc-32-bit-non-muxed-data-address-mode

Please clarify it as my customer is planning to use 32-bit synchronous nonmultiplexed if possible.

Referring to the below section of the data sheet i would assume this is supported. 

6.3.11 GPMC
6.3.11.1 MAIN Domain
Table 6-38. GPMC0 Signal Descriptions

Let me check with the expert.

I am also looking into the other queries.

Regards,

Sreenivasa

Hi Sreenivasa,

Thank you for your reply.
Could you please let me know when I can expect this answer,
as I need to report back to my customer.

Best Regards,
Kanae

Hello Kanae,

Thank you for the follow-up.

I am following with the expert and will update you.

Regards,

Sreenivasa

Hello Kanae,

Please refer below thread

(34) AM6411: Processor Peripherals: GPMC 32-bit A/D non-multiplexed interface - Processors forum - Processors - TI E2E support forums

Regards,

Sreenivasa

Hi Sreenivasa,

Thank you for your support!
I could understand that 32-bit data using A/D non-muxed configuration is possible with AM64x.

Sreenivasa said;
I am also looking into the other queries.

Could you please also reply to my request in the first post of this thread about checking the register settings?

Best Regards,
Kanae

Hello Kanae,

Thank you for the note.

I am checking internally and will update you.

Regards,

Sreenivasa

Hello Kanae,

Based on my internal discussion discussion with the expert, the configuration you listed in the initial query seems fine.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1349234/faq-am24x-am64x-am62x-what-are-the-maximum-sizes-of-nand-or-nor-or-psram-memories-that-can-be-connected-to-gpmc-for-the-am24x-am64x-am62x

Is this a feasibility study or has  customer done some implementation.

I assume that customer is aware of the increased bus capacitance with addition of devices.

regards,

Sreenivasa

Hello Kanae,

FYI, accessible memory size for different modes is listed below.

This table has been taken from the FAQ.

Regards,

Sreenivasa

Hi Sreenivasa,

Thank you for your support.

The settings here are in the feasibility study stage by the customer,
and they will decide on the settings based on this information.

I will share your post with my customer.

Best Regards,
Kanae

Hello Kanae,

Thank you for the note.

Regards,

Sreenivasa