ACT5880
Rev 2, 03-Sep-13
REGISTER AND BIT DESCRIPTIONS CONT’D
DEFAULT
and
ACCESS
ADDRESS
and BIT
BLOCK
NAME
DESCRIPTION
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.
7
ISCALE3[1]
0
W/R
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
ISCALE3[0]
ISET3[5]
ISET3[4]
ISET3[3]
ISET3[2]
ISET3[1]
ISET3[0]
DUTY3[7]
DUTY3[6]
DUTY3[5]
DUTY3[4]
DUTY3[3]
DUTY3[2]
DUTY3[1]
DUTY3[0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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.
0x76
W/R
ODO3
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.
0x77
W/R
Driver circuit over temperature indicator. This bit is cleared to 0
if the driver circuit over temperature happens.
7
6
5
4
THERMAL_OK
OK1
1
0
0
0
R
R
R
R
Indicator for ODO1 out current of regulation (open LED de-
tected).
Indicator for ODO2 out current of regulation (open LED de-
tected).
OK2
Indicator for ODO3 out current of regulation (open LED de-
tected).
OK3
ODO
0x79
Reserved for future use.
3
2
1
RFU
RFU
RFU
1
0
0
R
Reserved for future use.
W/R
W/R
Reserved for future use.
Set 1 to select data buffers. Buffered data is updated to each
0
BUFFER
0
W/R output simultaneously when this bit is cleared to 0, for synchro-
nized output.
Note:
W/R: Write and read accessible. R: Read accessible, writing to the bit does not make change to the volume. WE/R: Write
and read accessible, write exact what it is before to avoid unexpected behavior. X is uncertain volume.
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