A0 A1

1 1 This configuration is used to cause an incre-

ment or a decrement of a DAC. Right or

left DAC and inc/dec are selected by

D0 to D3 value.

A2, A3 DECODING (Channel Selection)

Every time a command or a initialization is sent to

the L6280, a channel must be selected. This is

done via A2 and A3 according to the table.

A2

A3

0

1

Select channel 2

1

0

Select channel 1

1

1

Select channel 3

0

0

Used only with keyword and watchdog

D0 to D3 DECODING (Datas)

The meaning of D0,

D3 changes according to

the value of A0, A1

A0 A1

0 0 When A0, A1 are in this configuration, and

channel 1 or 2 is selected, the data appear-

ing in D0 to D3 set the output power stage

configuration to fit the chosed load accord-

ing to the allowed Truth Table. There is no

need to configure channel 3.

D3

D2

D1

D0

Possible configurations for

channels 1 and 2

0

0

0

0

Null (power disabled)

a

0

0

0

1

Unipolar motor

b

0

0

1

0

Full Bridge

c

0

0

1

1

Dual Half Bridge

b) Full Bridge Configuration

a) Unipolar Motor Configuration

In this configuration D0 to D3 directly drive the low side drives:

D3

D2

D1

D0

Configurations

0

000

Low side drivers 1,2,3,4 OFF

0

001

Low side drivers 2,3,4 OFF

Low side driver 1 ON

0

010

Low side drivers 1,3,4 OFF

Low side driver 2 ON

0

100

Low side drivers 1,2,4 OFF

Low side driver 3 ON

0

101

Low side drivers 2,4 OFF

Low side drivers 1,3 ON

0

110

Low side drivers 1,4 OFF

Low side drivers 2,3 ON

1

000

Low side drivers 1,2,3 OFF

Low side driver 4 ON

1

001

Low side drivers 2,3 OFF

Low side drivers 1,4 ON

1

010

Low side drivers 1,3 OFF

Low side driver 2,4 ON

The following configurations are not allowed: the microprocessor does not to generate them otherwise

they can cause faulty operations.

D3

D2

D1

D0

0

011

Always not allowed

0

111

1

011

1

100

1

101

1

110

1

111

This configuration is not allowed when driving a unipolar motor and it is

permitted only to drive a high current solenoid.

L6280

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