BM94801KUT Datasheet, PDF (294/379 Pages) Rohm – Initial Program ROM

BM94801KUT
Datasheet
Command : &hA9
Meaning : Diffect threshold level setting (Initial value : 00h) → (Recommended value : AAh)
Bit
Command
code
Meaning
Status
MSB DSETTH3
6 DSETTH2
To set the threshold level of DEFECT set side.
5 DSETTH1
PeakLong–(&hA9[7:4]V_DD0.8/32)
[V].
(Initial value : 0h)
4 DSETTH0
3 DRSTTH3
2 DRSTTH2
To set the threshold level of DEFECT reset side.
1 DRSTTH1
BottomLong+(&hA9[3:0]V_DD0.8/32)
[V].
(Initial value : 0h)
LSB DRSTTH0
Command : &hAA
Meaning : FOK setting (Initial value : 00h) → (Recommended value : 13h)
Bit
Command
code
Meaning
MSB -
Status
6-
5-
4 FOKD
To select the method of FOK judgement.
3 FOKTHL3
2 FOKTHL2
To set the FOK threshold level.
1 FOKTHL1
LSB FOKTHL0
0 : Decided by Peak Long value
(Initial value)
1 : Decided by Peak Long – Bottom Long
(amplitude)
At &hAA[4]=0,
FOK is set to “L” by
PeakLong<(&hAA[3:0]-8)V_DD0.8/16.
At &hAA[4]=1,
FOK is set to “L” by
(PeakLong–BottomLong)<&hAA[3:0]
V_DD0.8/16
(Initial value : 0h)
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TSZ02201-0V2V0E600300-1-2
18.Apr.2014 Rev.003