FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Table 19. Clock Select Register
0010
Data1
Data2
Bit
3
Ext/Int
0
2
Half Freq
0
1
0
S_Off_VG
0
3
2
1
0
Name
Default
RSTB sleep
1
VG_Duty [3] VG_Duty[2] VG_Duty[1] VG_Duty[0]
0
0
0
0
Ext / Int: Clock Select control 1
1 = External Clock
VG_Duty[2]: VG Duty Control Bit 2
1 = VG Duty[2] is high
0 = Internal Clock
0 = VG Duty[2] is low
2FS: Clock Select control 2
1 = 2FS on
VG_Duty[1]: VG Duty Control Bit1
1 = VG Duty[1] is high
0 = 2FS off
0 = VG Duty[1] is low
RSTB Sleep: RSTB Sleep Monitor
1 = RSTB SLEEP Monitor off
0 = RSTB SLEEP Monitor on
*1
VG_Duty[0]: VG Duty Control LSB
1 = VG Duty[0] is high
0 = VG Duty[0] is low
S_Off_VG: VG Top side transistor off
1 = Synchronous Rectification Off
0 = Synchronous Rectification On
VG is controlled by PFM method. This register can change
the duty by 16 steps.
Refer to Table 15, VGATE Duty Settings on page 23 for
the correspondence between the VG Duty maximum values
and register settings.
VG_Duty[3]: VG Duty Control MSB
1 = VG Duty[3] is high
0 = VG Duty[3] is low
Table 20. VO1_SENSE Output Voltage Register
0011
Bit
Data1
Data2
3
2
1
0
3
2
1
0
VO1_SENSE
[6]
VO1_SENSE
[5]
VO1_SENSE
[4]
VO1_SENSE
[3]
VO1_SENSE
[2]
VO1_SENSE
[1]
VO1_SENSE
[0]
S_Off_VO1_SENSE
Name
Default
1
0
0
0
0
0
0
0
VO1_SENSE[6]: Reference DAC MSB
1 = VO1_SENSE[6] on
0 = VO1_SENSE[6] off
VO1_SENSE[1]: Reference DAC Bit1
1 = VO1_SENSE[1] on
0 = VO1_SENSE[1] off
VO1_SENSE[5]: Reference DAC Bit5
1 = VO1_SENSE5] on
VO1_SENSE[0] on
0 = VO1_SENSE[0] off
0 = VO1_SENSE[5] off
S_Off_VO1_SENSE: DDC1 Top side (Ni_mh) / Bottom
side (Li_ion) transistor off
1 = Synchronous Rectification Off
VO1_SENSE[4]: Reference DAC Bit4
1 = VO1_SENSE[4] on
0 = VO1_SENSE[4] off
0 = Synchronous Rectification On
VO1_SENSE[3]: Reference DAC Bit3
1 = VO1_SENSE[3] on
0 = VO1_SENSE[3] off
Refer to Table 10, Output Voltage of VO1_SENSE on
page 19 for the correspondence between the output voltage
and register settings.
VO1_SENSE[2]: Reference DAC Bit2
1 = VO1_SENSE[2] on
0 = VO1_SENSE[2] off
18730
Analog Integrated Circuit Device Data
Freescale Semiconductor
25
FREESCALE [ Freescale ]
