MFM8516 - 70/90/12/15
ISSUE 4.7 : NOVEMBER 1998
TOGGLE BIT ALGORITHM
Start
VA = Byte Address for programming
Read Byte
= Any of the sector addresses
within the sector being erased
during sector erase operation.
= XXXXH during chip erase
(D0 - D7)
Addr=VA
No
D6 = Toggle?
Yes
No
D5=1?
Yes
Read Byte
(D0 - D7)
Addr=VA
No
D6 = Toggle?
Pass
Yes
Fail
Note : D6 is rechecked even if D5 = "1" beceause D6 may stop toggling at the same time
as D5 changing to "1"
13