ACT5880 datasheet(28/87 Pages) ACTIVE-SEMI

28 / 87 page

ACT5880

Rev 2, 03-Sep-13

- 28 -

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BLOCK

ADDRESS

and BIT

NAME

DEFAULT

and

ACCESS

DESCRIPTION

ODO1

0x70

ISCALE1[1]

W/R

Set the LSB weight of the linear current setting of the open-drain

driver. [1:0]=00 for 0.4mA, 01 for 0.8mA, 10 for 1.2mA, 11 for

1.6mA.

ISCALE1[0]

ISET1[5]

W/R

Driver output current setting in linear code, no offset.

[

5:0]=0 for 0mA output. Full scale output currents are 25.2mA,

50.4mA, 75.6mA and 100.8mA respectively with different LSB

weights.

ISET1[4]

ISET1[3]

ISET1[2]

ISET1[1]

ISET1[0]

0x71

DUTY1[7]

W/R

PWM duty setting. [7:0]=0x00 for 0%, [7:0]=0xFF for 100%.

For linear duty setting option, the LSB weight is 0.4% for code

0x00 to 0xFE, which is 0% to 99.2% of duty. The code 0xFF is

forced for 100% duty.

For the non-linear duty setting option, refer to the table of NON-

LINEAR DUTY SETTING for code to duty cross.

DUTY1[6]

DUTY1[5]

DUTY1[4]

DUTY1[3]

DUTY1[2]

DUTY1[1]

DUTY1[0]

ODO2

0x73

ISCALE2[1]

W/R

ISCALE2[0]

ISET2[5]

W/R

Driver output current setting in linear code, no offset.

[

5:0]=0 for 0mA output. Full scale output currents are 25.2mA,

50.4mA, 75.6mA and 100.8mA respectively with different LSB

weights.

ISET2[4]

ISET2[3]

ISET2[2]

ISET2[1]

ISET2[0]

0x74

DUTY2[7]

W/R

PWM duty setting. [7:0]=0x00 for 0%, [7:0]=0xFF for 100%.

For linear duty setting option, the LSB weight is 0.4% for code

0x00 to 0xFE, which is 0% to 99.2% of duty. The code 0xFF is

forced for 100% duty.

For the non-linear duty setting option, refer to the table of NON-

LINEAR DUTY SETTING for code to duty cross.

DUTY2[6]

DUTY2[5]

DUTY2[4]

DUTY2[3]

DUTY2[2]

DUTY2[1]

DUTY2[0]

Set the LSB weight of the linear current setting of the open-drain

driver. [1:0]=00 for 0.4mA, 01 for 0.8mA, 10 for 1.2mA, 11 for

1.6mA.

Note:

W/R: Write and read accessible.

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