wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 163

• Manufacturer Part Number: wm8351
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
R168 (A8h)
Battery charger
control 1
R169 (A9h)
Battery charger
control 2
Table 106 Battery Charger Termination
17.7.6
The status of the Battery Charger can be read from the CHG_STS register field, as described in
Table 107. This field indicates whether the charger is active in trickle or fast charge modes.
R169 (A9h)
Battery charger
control 2
Table 107 Battery Charger Status
In addition to the CHG_STS register readback, the charger status can be indicated on an LED
connected to a GPIO pin configured as CH_IND (see Section 20). The CH_IND function is an open-
drain LED output that provides a visible indication of the charger status.
ADDRESS
ADDRESS
BATTERY CHARGER STATUS
13:12
BIT
12:10
11:8
BIT
6
CHG_STS [1:0]
CHG_EOC_SE
L [1:0]
CHG_END_AC
T
CHG_TIME
[3:0]
LABEL
LABEL
DEFAULT
DEFAULT
1011
000
00
0
Selects what the end of charge current
should be set to
000 = 20mA
001 = 30mA
...
111 = 90mA
Protected by security key.
Action to take when charging ends:
0 = Set charge current to 0
1 = Do nothing (leave charger on till
timeout)
Protected by security key.
Writing to his field set the charge timeout
duration:
0000 = 60min
0001 = 90min
0010 = 120min
0011 = 150min
0100 = 180min
0101 = 210min
0110 = 240min
0111 = 270min
1000 = 300min
1001 = 330min
1010 = 360min
1011 = 390min
1100 = 420min
1101 = 450min
1110 = 480min
1111 = 510min
Reading from this field indicates the
charge time remaining:
Time remaining = CHG_TIME * 2048s
Protected by security key.
Charger status:
00 = Charger off, current set to 0.
01 = In trickle charge mode.
10 = In fast charge mode.
11 - Reserved
(10mA steps)
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
WM8351
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