LS2044, LS2048, LS2084 compatibility

[prashantsoni]

 LS2044, LS2048, LS2084 are these 3 proceesor are compatible with each other. If i want to use these three alternatively on same PCB what will be the modification required in my design.

[alexander_yakov]

LS2044, LS2048, LS2084 are compatible except 32-bit DDR4 controller not present in LS2084/2044 - G3VDD should be tied to GND, and all other D3 pins must be left unconnected. Also, please connect TEST_SEL_B pin properly - it should be pulled high via 1-10 K resistor for LS2088 and LS2084, and pulled down for LS2048 and LS2044.

Please look Design Checklist (AN4977) for more information.

https://www.nxp.com/products/processors-and-microcontrollers/arm-based-processors-and-mcus/qoriq-lay...

Have a great day,
Alexander
TIC

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[prashantsoni]

Hi Alexendra

LS2044, LS2048, LS2084 are compatible except 32-bit DDR4 controller not present in LS2084/2044 - G3VDD should be tied to GND, and all other D3 pins must be left unconnected. Also, please connect TEST_SEL_B pin properly - it should be pulled high via 1-10 K resistor for LS2088 and LS2084, and pulled down for LS2048 and LS2044.

By the above mentioned points we got the design variation for AIOP (enabled ) and Disabled.
In the checklist there is not much information to have cross compatibility check.

So can we proceed for the design with the recomended implementation that you have mentioned on Dec 28,2018

[prashantsoni]

Hi Alexendra, 

Waiting for your response on this 

[alexander_yakov]

AIOP function is supported in LS2088A and LS2048A processors, and not supported in LS2084A and LS2044A.

For the information about all functional differences please look LS2088A Reference Manual, Appendixes A, B and C.

Have a great day,
Alexander,
TIC

[prashantsoni]

Hi Alexander, 

Thanks for you support on this.

One query is still pending in Reference manual and QSG of the LS2088Ardb , all boot configuration RCW settings are not mentioned . Can you provide any link where all the RCW setting will be mentioned for LS2088A.

[alexander_yakov]

For RCW fields description please refer to processor reference manual - LS2088A Reference Manual, Section 4.9.7.9

LS2088A Reference Manual is available for download from LS2088 Product page, "Documentation" tab:

https://www.nxp.com/products/processors-and-microcontrollers/arm-based-processors-and-mcus/qoriq-lay...

Have a great day,
Alexander
TIC

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------