7.6.6.1 Functional

Figure 7-14. Verify Password Command Functional Description

Read password indices: $10 to $17 for passwords 0 to 7.

Write password indices: $00 to $07 for passwords 0 to 7.

Secure code index: $07 (equivalent to Write 7 password).

Four password index bits, "r" and "ppp", indicate the password to compare:

  • r = 0 : Write password
  • r = 1 : Read password
  • p2p1p0: Password set number
Figure 7-15. Verify Password
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Once the sequence has been carried out, the device requires the host to perform an ACK polling sequence with the System Read command $B6. To determine whether the inserted password was correct, the host can read the corresponding password attempts counter and verify that the value is $FF.