TMS570LC4357: Question about test of flash DATA ECC area

Hello,

We want to test the Fprom Bank0 and Bank1 (0x00000000 to 0x003FFFFF) and associated flash Data ECC area (0xF0400000 to 0xF0480000).

This is our procedure :
1- Erase flash Bank0 / bank1 and program corresponding flash data ECC
2- program bank0 and bank 1 with 0x00 values and program corresponding flash data ECC
3- read and check flash Bank1 and 2 and check Data = 0x00 and no ECC occurs
4- Erase flash Bank0 / bank1 and corresponding flash data ECC
5- read and check flash Bank0 and 1 and check Data = 0xFF and no ECC occurs
6- Erase  flash DATA ECC only (0xF0400000 to 0xF0480000) with flash Bank0 and 1 unchanged (0xFF values)
7- read and check flash DATA ECC = 0xFF and no ECC occurs
8- program flash DATA ECC only (0xF0400000 to 0xF0480000) with 0x00 values and with flash Bank0 and 1 unchanged (0xFF values)
9- read and check flash DATA ECC = 0x00 and no ECC occurs


This is my questions :

1- For steps 6 to 9, is it possible to write and read in Flash Data ECC area without a coherent Data in Flash Bank0 and 1?  Is there a flash ECC check in this case?
2- If ECC IT occurs, is there a mean to check the erasing of flash DATA ECC area only?

Best regards,

François