ACT8810
Active- Semi
Rev 4, 01-Oct-09
STEP-DOWN DC/DC CONVERTERS
REGISTER DESCRIPTIONS
Note: See Table 1 for default register settings.
Table 10:
REG3 Control Register Map
DATA
ADDRESS
D7
R
D6
D5
D4
D3
D2
D1
D0
30h
31h
32h
33h
R
VSET1
R
R
R
R
R
R
R
R
R
R
R
R
R
nFLTMSK
VSET0
OK
ON
R
VRANGE
R: Read-Only bits. Default Values May Vary.
W/E: Write-Exact bits. Read/Write bits which must be written exactly as specified in Table 1
Table 11:
REG3 Control Register Bit Descriptions
ADDRESS NAME
BIT ACCESS
FUNCTION
DESCRIPTION
See Table 10
READ ONLY
READ ONLY
REG3 Disable
REG3 Enable
Output is not OK
Output is OK
Masked
30h
30h
31h
VSET1
[5:0]
[7:6]
[7:0]
R/W
R
REG3 Standby Output Voltage Selection
R
0
1
0
1
0
1
32h
32h
32h
ON
OK
[0]
[1]
[2]
R/W
R
REG3 Enable
REG3 Power-OK
nFLTMSK
R/W
REG3 Output Voltage Fault Mask Option
Not Mask
32h
33h
[7:3]
[5:0]
R
READ ONLY
See Table 10
Min VOUT = 0.8V
Min VOUT = 1.25V
READ ONLY
VSET0
R/W
REG3 Output Voltage Selection
REG3 Voltage Range
0
1
33h
33h
VRANGE
[6]
[7]
R/W
R
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