WM8350GEB/RV Wolfson Microelectronics, WM8350GEB/RV Datasheet - Page 169

• Manufacturer Part Number: WM8350GEB/RV
• Description: Audio CODECs Audio CODEC plus pwr management
• Manufacturer: Wolfson Microelectronics

Specifications of WM8350GEB/RV

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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17.7.8
The battery charger can raise a first-level interrupt, CHG_INT (see Section 24) to report status and
fault conditions to the host processor. The CHG_INT interrupt is the logical OR of all the second-level
interrupts described in Table 111.
Note: If a battery is connected to the BATT pin, but the WM8350 is being powered from the Wall or
USB
CHG_VBATT_LT_3P1_EINT and CHG_VBATT_LT_2P85_EINT interrupts to be set.
The CHG_VBATT_LT_3P1_EINT and CHG_VBATT_LT_2P85_EINT interrupts can be masked by
setting the associated mask bits defined in Table 111.
Alternatively, the EXT_USB_FB_EINT and/or EXT_WALL_FB_EINT interrupts (see Section 17.5)
can be used to validate the Battery Undervoltage interrupts - if one of the External Feedback
interrupts is set at the same time as the Battery Undervoltage interrupts, then the Battery
Undervoltage interrupts should be ignored.
R25 (19h)
Interrupt
Status 1
R33 (21h)
Interrupt
Status 1
mask
Table 111 Battery Charger Interrupts
ADDRESS
supplies,
INTERRUPTS AND FAULT PROTECTION
15:0
BIT
15
14
13
12
11
10
9
2
1
0
then
CHG_BATT_HOT_EINT
CHG_BATT_COLD_EINT
CHG_BATT_FAIL_EINT
CHG_TO_EINT
CHG_END_EINT
CHG_START_EINT
CHG_FAST_RDY_EINT
CHG_VBATT_LT_3P9_EINT
CHG_VBATT_LT_3P1_EINT
CHG_VBATT_LT_2P85_EIN
T
“IM_” + name of respective bit
in R25 (19h)
disconnection
LABEL
of
the
Wall
Battery temp too hot.
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery temp too cold.
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery fail.
(Rising Edge triggered)
Note: This bit is cleared once read.
Charger timeout.
(Rising Edge triggered)
Note: This bit is cleared once read.
Charging final stage.
(Rising Edge triggered)
Note: This bit is cleared once read.
Charging started.
(Rising Edge triggered)
Note: This bit is cleared once read.
Indicates that the charger is ready to go
into fast charge.
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery Voltage < 3.9 interrupt.
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery voltage < 3.1 interrupt.
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery voltage < 2.85 interrupt.
(Rising Edge triggered)
Note: This bit is cleared once read.
Mask bits for battery charger interrupts
Each of these bits masks the respective
bit in R25 when it is set to 1 (e.g.
CHG_FAST_RDY in R25 does not trigger
a CHG_INT interrupt when
IM_CHG_FAST_RDY in R33 is set).
or
USB
DESCRIPTION
PD, February 2011, Rev 4.4
supply
will
WM8350
cause
169
the