APW8855 Datasheet, PDF (24/43 Pages) Anpec Electronics Coropration – High Current, High Frequency 7 Outputs Voltage Regulator and Power Management IC for High Performance Tablet and Ultra Notebook Applications

APW8855
14.2 VR1 Register Table
Addres s
Fie ld Na me
Data B it
Bit Na me
Read/Write
Po wer On De fa ult
Bit Name
5V_ALW _VSEL
0x01
5 V_ALW DAC [7:0 ]
D7
D6
D5
D4
D3
5V _ALW _VS EL
R/W
R/W
R/W
R/W
R/W
0
1
1
0
1
Bit Definition
0 0h : shutdown
5 1h : V R1 &V5V_ALW_LDO Voltage = 45 00mV.
5 2h : V R1 &V5V_ALW_LDO Voltage = 45 20mV.
5 3h : V R1 &V5V_ALW_LDO Voltage = 40 40mV.
…
6 dh : V R1 &V_{5V_ALW_LDO} Voltage = 50 60mV (Default)
….
8 3h : V R1 &V_{5V_ALW_LDO} Voltage = 55 00mV.
8 4h ~ ffh: Re served.
D2
R/W
1
D1
R/W
0
D0
R/W
1
Addres s
Fie ld Na me
Data B it
Bit Na me
Read/Write
Po wer On De fa ult
Bit Name
5V_ALW __EN
5V_ALW __SEL
5V_ALW _FSW_SE L
5V_ALW _SLEW
0x0 2
5 V_ALW CONTROL [7: 0]
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
5 V_ALW_SLEW
R/W
R/W
5V _ALW _FSW _SEL
5 V_ALW__ 5V _ALW__
SE L
EN
R/W
R/W
R/W
R/W
0
0
1
0
0
0
Bit Definition
0: V R1 o ff (De fau lt)
1: V R1 on
0: V R1 o n/off i s controlle d by CTL (Defaul t)
1: V R1 o n/off i s controlle d by 5V _ALW _EN State
00 : FSW = 1.0MHz at PWM mod e.
01 : FSW = 0.6MHz at PWM mod e.
10 : FSW = 0.8MHz at PWM mod e. (Defau lt)
11 : FSW = 1.2MHz a t PWM mode.
00 : Transition sl ew ra te = 1 0mV/us. (Default)
01 : Transition sl ew ra te = 1 5mV/us.
10 : Transition sl ew ra te = 2 0mV/us.
11 : Tra nsitio n sle w rate = 25mV /u s
Copyright © ANPEC Electronics Corp.
24
Rev. A.1 - Dec., 2015
www.anpec.com.tw