From field:
In the past customer selected POP package (8Gbit, 4 dies validated by TI in pop ) due to our note on wiki :
AM37x Hardware connections to SDRAM
This section will discuss the connections and recomendations for connecting to LPDDR1 memories. The AM37x SDRAM interface opperates at a maximum of 200MHz allowing connection to 400LPDDR1 devices. The interface supports 1GByte over 2 Chip Selects. The SDRC signals should never exceed 2 loads. Some memories increase capacity by stacking dies in their packages. Each die in the memory device adds a load to the SDRC signals, so if a memory has 2 dies in the device then the AM37x SDRC signals will have 2 loads present.
The SDRC signals should never exceed 2 loads
Now customer could have these different choices in CUS package :
1) 4x2Gbit LPDDR (1Die each)
2) 2x4Gbit LPDDR (2 Dies each)
3) 1x8Gbit LPDDR (4 Dies)
Is any of this choice acceptable on CUS ? are they are hitting the 2dies issue …?