¡ Semiconductor
ML9211
Slave Mode
Slave Mode is selected when M/S pin is set at Low level. The slave mode operation is as follows:
• The internal dimming circuit is ignored.
• The pulse width of SEG1 to 56 are controlled by the pulse width of DIM IN signal.
• The segment Latch1 to 3 corresponding to GRID1 to 3 are selected by SYNC IN1 and SYNC IN2
signals.
• The output levels of GRID1 to 3 are set at High level. The output levels of DIM OUT, SYNC
OUT1 and SYNC OUT2 are set at Low level.
[Correspondence between SYNC IN1, 2 and Segment Latch1 to 3] [Correspondence between DIM IN and SEG1 to 56]
SYNC IN 1
SYNC IN 2
Segment Latch
No
GRID
No
DIM IN
SEG1 to 56
Low
0
1
0
1
0
0
1
1
0
1
Latch1
GRID1
GRID2
GRID3
High
Latch2
Note: Low: Lights OFF
High: Lights ON
Latch3
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OKI [ OKI ELECTRONIC COMPONETS ]
