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BQ27410 ROM erasing

Hi!

I'm working on a driver for BQ27410-G1 chip. I use the slua595.pdf document, that contains
"DFI Write Flow" algorithm. (Pages #9..#11 of SLUA595-June 2011.) According to Figure 7
on page 9, I read 192 bytes of the chip ROM and then I erase this area.
The question is that after erasing, I can read 0xFF, 0xFF, 0x3F, 0xFF, 0xFF, 0x3F, 0xFF...
I.e. every 3rd byte is 0x3F instead of 0xFF. Is it right? Thanks -- Konstantin