IFC CONNECTION TO 16BIT NOR FLASH IN LS1043ARDB

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IFC CONNECTION TO 16BIT NOR FLASH IN LS1043ARDB

364 次查看
Pamid
Contributor II

We  are using  LS1043ARDB and as per schematic  diagram IFC connection to 16 bit NOR FLASH is in ADM-SHFT-MODE=0(as per LS1043A Reference manual figure 25.9). As per this mode, IFC_AD0 should be MSB and it should get connected to NOR FLASH  ADDRESS line A25. But IFC_AD1 is connected to A25 address pin of FLASH. Please clarify.

 

IFC_A26 is the LSB bit and  it should be left un connected( for 16 bit operation). but it is connected to A0  Address pin of NOR FLASH.Please clarify.

 

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340 次查看
mrudangshelat-13
NXP TechSupport
NXP TechSupport

Hi @Pamid,

Please refer to figure 25-9 available in LS1043ARM which is the connection of x16 NOR for ADM MODE0. Please follow the connection details for your design.

Regards,
Mrudang


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337 次查看
Pamid
Contributor II

In  LS1043A RDB-PD , 16 Bit NOR FLASH is connected to IFC interface of LS1043A.   As per this 

IFC_ADDR[1:15] is connected to A[25:11].

IFC_ADDR[16:26] is connected to A[10: 0].

But as per LS1043ARM  Fig:25-9, IFC_AD0  after address decoding should get connect to A25 address line of NOR FLASH. I am confusing while co-relating LS1043ARM  Fig:25-9 with 16 Bit NOR FLASH  connectivity in LS1043A RDB-PD. Please clarify.

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