FEDL9212-01

OKI Semiconductor

ML9212

12/17

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 32 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 32]

SYNC IN 1

SYNC IN 2

Segment

Latch

GRID

DIM IN

SEG1 to 32

0

0

No

No

0

Low

1

0

Latch1

GRID1

1

High

0

1

Latch2

GRID2

Note: Low: Lights OFF

1

1

Latch3

GRID3

High: Lights ON