WM8311GEB/V Wolfson Microelectronics, WM8311GEB/V Datasheet - Page 228

• Manufacturer Part Number: WM8311GEB/V
• Description: POWER MANAGEMENT SUBSYSTEM, 121BGA
• Manufacturer: Wolfson Microelectronics

Specifications of WM8311GEB/V

• Supply Voltage: 5.5V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 7
• Digital Ic Case Style: BGA
• No. Of Pins: 121
• No. Of Regulated Outputs: 9
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

WM8311
REGISTER
R16459
(404Bh)
Backup
Charger
Control
Register 404Bh Backup Charger Control
REGISTER
R16460
(404Ch)
Status LED
1
w
ADDRESS
ADDRESS
15:14
BIT
BIT
1:0
9:8
5:4
15
14
12
11
10
4
LED1_SEQ_LE
BKUP_CHG_M
BKUP_CHG_IL
LED1_SRC[1:0
BKUP_CHG_E
BKUP_CHG_S
BKUP_CHG_V
BKUP_BATT_
BKUP_BATT_
LED1_MODE
DET_ENA
LABEL
LABEL
IM[1:0]
N[1:0]
ODE
STS
[1:0]
LIM
NA
TS
]
DEFAULT
DEFAULT
00
11
00
10
0
0
0
0
0
0
Backup Charger Enable
0 = Disable
1 = Enable
Note - this bit is reset to 0 when the OFF power state is
entered.
Protected by security key.
Backup Charger status
0 = Not charging
1 = Charging
Backup Charger mode
0 = Constant current and Constant voltage modes
enabled
1 = Constant current mode only
Protected by security key.
Backup Battery detection enable
0 = Disable
1 = Enable
Note - this bit is reset to 0 when the OFF power state is
entered.
Backup Battery detection status
0 = Backup battery not present
1 = Backup battery is present
Backup Charger voltage limit
0 = 2.5V
1 = 3.1V
Protected by security key.
Backup Charger current limit
00 = 100uA
01 = 200uA
10 = 300uA
11 = 400uA
Protected by security key.
LED1 Source
(Selects the LED1 function.)
00 = Off
01 = Power State Status
10 = Charger Status
11 = Manual Mode
Note - LED1 also indicates completion of OTP Auto
Program
LED1 Mode
(Controls LED1 in Manual Mode only.)
00 = Off
01 = Constant
10 = Continuous Pulsed
11 = Pulsed Sequence
LED1 Pulse Sequence Length
(when LED1_MODE = Pulsed Sequence)
00 = 1 pulse
DESCRIPTION
DESCRIPTION
PP, December 2009, Rev 3.0
REFER TO
REFER TO
Pre-Production
228