BQ24298_15 Datasheet, PDF (36/51 Pages) Texas Instruments – bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

bq24298
SLUSC59 – APRIL 2015
8.6.1.10 New Fault Register REG09
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Figure 36. New Fault Register REG09 Format
7
6
5
4
3
2
1
WATCHDOG
_FAULT
OTG_FAULT
CHRG_FAULT[1]
CHRG_FAULT[0]
BAT_FAULT
Reserved
NTC_FAULT[1]
R
R
R
R
R
R
R
LEGEND: R = Read only
Table 15. New Fault Register REG09 Field Description^(1)(2)(3)
0
NTC_FAULT[0]
R
BIT
Bit 7
Bit 6
FIELD
WATCHDOG_FAULT
OTG_FAULT
TYPE
R
R
Bit 5 CHRG_FAULT[1]
R
Bit 4 CHRG_FAULT[0]
R
Bit 3 BAT_FAULT
R
Bit 2 Reserved
R
Bit 1 NTC_FAULT[1]
R
Bit 0 NTC_FAULT[0]
R
DESCRIPTION
0 – Normal, 1- Watchdog timer expiration
0 – Normal, 1 – VBUS overloaded in OTG, or VBUS OVP, or battery is too low (any
conditions that cannot start boost function)
00 – Normal, 01 – Input fault (OVP or bad source), 10 - Thermal shutdown,
11 – Charge Timer Expiration
0 – Normal, 1 – Battery OVP
Reserved – 0
0-Normal 1–Cold Note: Cold temperature threshold is different based on device operates in
buck or boost mode
0-Normal 1–Hot Note: Hot temperature threshold is different based on device operates in
buck or boost mode
(1) REG09 only supports single byte I²C read.
(2) All register bits in REG09 are latched fault. First time read of REG09 clears the previous fault and second read updates fault register to
any fault that still presents.
(3) When adapter is unplugged, input fault (bad source) in CHRG_FAULT bits[5:4] is set to 01 once.
8.6.1.11 Vender / Part / Revision Status Register REG0A
Figure 37. Vender / Part / Revision Status Register REG0A Format
7
6
PN[2]
PN[1]
R
R
LEGEND: R = Read only
5
PN[0]
R
4
Reserved
R
3
Reserved
R
2
Rev[2]
R
1
Rev[1]
R
0
Rev[0]
R
Table 16. Vender / Part / Revision Status Register REG0A Field Description
BIT
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
FIELD
PN[2]
PN[1]
PN[0]
Reserved
Reserved
System reset
ID
Rev[1]
Rev[0]
TYPE
R
R
R
R
R
R
R
R
DESCRIPTION
001 (bq24298)
0 – Reserved
0 – Reserved
1 – System reset (bq24298).
00
36
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