FEDL9213-01

1Semiconductor

ML9213

13/19

Slave Mode

Slave Mode is selected when M/

S pin is set at Low level. The slave mode operation is as follows:

N Output from internal anode dimming circuit is ignored. Connect the DIM IN, SYNC IN1 and SYNC IN2 pins to

the master side DIM OUT, SYNC OUT1 and SYNC OUT2 pins respectively.

N The pulse width of SEG1 to 56 is controlled by the pulse width of DIM IN signal.

N The segment data corresponding to GRID1 to 3 is selected by combinations of the SYNC IN1 and SYNC IN2

signals.

N 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 GRID1 to 3]

[Correspondence between DIM IN and SEG1 to 56]

SYNC IN 1

SYNC IN 2

Segment Latch

GRID

DIM IN

SEG1 to 56

0

0

No

No

0

Low

1

0

Latch1

GRID1

1High

0

1

Latch2

GRID2

Note:

Low: Lights OFF

1

1

Latch3

GRID3

High: Lights ON