DataFlash Checksum

Hi,

I have written an app to write a DFI file to my BQ20z65-R1 (or BQ20z95) which, as per SLUA355, does the following:

Puts the device in ROM mode

Erases a row (x11)

Write a row (x10)

<repeat on every 32 bytes in the DFI>

Get checksum (0x0E)

Send x08 to start Firmware.

I have 2 questions:

1. does the command 0x11 in ROM mode erase 32 or 64 bytes?

2. how do I calculate the checksum to get the same result as the DF checksum?

Thanks