ACT8796
Rev1, 10-Oct-08
STEP-DOWN DC/DC CONVERTERS
REGISTER DESCRIPTIONS
Note: See Table 1 for default register settings.
Table 2:
REG1 Control Register Map
DATA
ADDRESS
D7
R
D6
D5
D4
D3
D2
D1
D0
10h
11h
12h
13h
VRANGE
VSET
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
MODE
R
R
R
W/E
OK
ON
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 3:
REG1 Control Register Bit Descriptions
ADDRESS
NAME
BIT
ACCESS
FUNCTION
DESCRIPTION
See Table 4
10h
VSET
[5:0]
R/W
REG1 Output Voltage Selection
0
1
Min VOUT = 1.1V
Min VOUT = 1.25V
READ ONLY
PWM/PFM
REG1 Voltage Range
Selection
10h
10h
11h
VRANGE
MODE
[6]
[7]
[0]
R/W
R
0
1
R/W
Mode Selection
Forced PWM
READ ONLY
READ ONLY
REG1 Disable
REG1 Enable
Output is not OK
Output is OK
WRITE-EXACT
READ ONLY
11h
12h
[7:1]
[7:0]
R
R
0
1
0
1
13h
13h
ON
OK
[0]
[1]
R/W
R
REG1 Enable
REG1 Power-OK
13h
13h
[2]
W/E
R
[7:3]
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