AM5706: GPMC Limitation

Athuljith R

Part Number: AM5706

Hi,

I am using AM5706 processor for interfacing a parallel device through GPMC, as per the pin definition only 4 Chip selects are available. I would like to know if I can connect more that 4 devices (Minimum 6) in GPMC lines.

And what is the maximum capacitive load could be drive by AM5706

thanks in advance

over 2 years ago

0 Parth Nagpal over 2 years ago

TI__Mastermind 42135 points

Hi,

Our hardware expert will respond here soon.

Regards,
Parth

0 B.C. over 2 years ago in reply to Parth Nagpal

TI__Genius 16966 points

I'm not aware of a reference design or software implementation with multiple devices on a single chip select. That would be a custom configuration that is likely possible, but not directly supported by TI in terms of debug assistance and custom software. I found a related question that you could review if still interested:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1241868/am3354-gpmc-multiple-instances-of-same-device-on-a-single-chip-select

The datasheet timing parameters are characterized against the load show in the datasheet:

https://www.ti.com/document-viewer/AM5706/datasheet/parameter-information-ch5-00010#CH5_00010

Larger loads will slow down the signal edges and can be modeled using IBIS simulations if desired.

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AM5706: GPMC Limitation