BQ25872 Datasheet, PDF (44/68 Pages) Texas Instruments – Battery Switch Charger

bq25872
SLUSCQ6 – OCTOBER 2016
8.5.20 REG12 (TS_BAT_FLT)
Figure 39. REG12 (TS_BAT_FLT)
7
6
5
4
3
2
1
0
0
0
1
1
1
0
R
R/W
R/W
R/W
R/W
R/W
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 21. REG12 (TS_BAT_FLT)
Bit Field
7 Reserved
6 TS_BAT_FLT[6]
5 TS_BAT_FLT[5]
4 TS_BAT_FLT[4]
3 TS_BAT_FLT[3]
2 TS_BAT_FLT[2]
1 TS_BAT_FLT[1]
0 TS_BAT_FLT[0]
Reset
Type
Description
REG_RST Watchdog
EN
R
Y
N
Y
Reserved bit. Always read 0.
R/W
Y
N
Y
1600 mA TS_BAT voltage threshold
R/W
Y
N
Y
800 mA
Offset: 0 V
Range: 0 V to 1.4 V
R/W
Y
N
Y
400 mA Default: 0.7 V (00011100)
R/W
Y
N
Y
200 mA
R/W
Y
N
Y
100 mA
R/W
Y
N
Y
50 mA
R/W
Y
N
Y
25 mA
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0
0
R/W
8.5.21 REG 13 and REG 14 (VBUS_ADC)
Figure 40. REG 13 and REG 14 (VBUS_ADC)
REG13
REG14
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Register Bit Field
7 VBUS_POL
REG13
REG14
6 VBUS_ADC[14]
5 VBUS_ADC[13]
4 VBUS_ADC[12]
3 VBUS_ADC[11]
2 VBUS_ADC[10]
1 VBUS_ADC[9]
0 VBUS_ADC[8]
7 VBUS_ADC[7]
6 VBUS_ADC[6]
5 VBUS_ADC[5]
4 VBUS_ADC[4]
3 VBUS_ADC[3]
2 VBUS_ADC[2]
1 VBUS_ADC[1]
0 VBUS_ADC[0]
Table 22. REG 13 and REG 14 (VBUS_ADC)
Reset
Type
Description
REG_RST Watchdog
EN
Indicates polarity of VBUS voltage. Always
R
Y
N
Y
positive.
0 - positive voltage
1 - negative voltage
R
Y
N
Y
16384 mV Voltage representation of ADC
R
Y
N
Y
8192 mV
conversion of VBUS voltage.
Range: 0 V, and 2.048 V to 6.140
R
Y
N
Y
4096 mV V
R
Y
N
Y
2048 mV
Default: 0 V (0000000000000000)
If VBUS < 0.3 V, VBUS_ADC =
R
Y
N
Y
1024 mV _{0.3 V}
R
Y
N
Y
512 mV
R
Y
N
Y
256 mV
R
Y
N
Y
128 mV
R
Y
N
Y
64 mV
R
Y
N
Y
32 mV
R
Y
N
Y
16 mV
R
Y
N
Y
8 mV
R
Y
N
Y
4 mV
R
Y
N
Y
2 mV
R
Y
N
Y
1 mV
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