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WM8311 Datasheet(PDF) 114 Page - Wolfson Microelectronics plc |
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WM8311 Datasheet(HTML) 114 Page - Wolfson Microelectronics plc |
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114 / 302 page  WM8311 Pre-Production w PP, May 2012, Rev 3.1 114 Note that the Battery Charger control registers are locked by the WM8311 User Key. These registers can only be changed by writing the appropriate code to the Security register, as described in Section 12.4. ADDRESS BIT LABEL DEFAULT DESCRIPTION R16456 (4048h) Charger Control 1 15 CHG_ENA 0 Battery Charger Enable 0 = Disable 1 = Enable Protected by user key 0 CHG_CHIP_TEMP_ MON 1 Battery Charger Thermal warning select 0 = Thermal Warning is ignored 1 = Thermal Warning pauses Battery Charger Protected by user key R16457 (4049h) Charger Control 2 14 CHG_OFF_MASK 0 Battery Charger OFF mask select 0 = OFF requests not masked 1 = OFF requests masked during Charging Protected by user key 7:6 CHG_TRKL_ILIM [1:0] 00 Battery Trickle Charge current limit 00 = 50mA 01 = 100mA 10 = 150mA 11 = 200mA Protected by user key 5:4 CHG_VSEL [1:0] 00 Battery Charger target voltage 00 = 4.05V 01 = 4.10V 10 = 4.15V 11 = 4.20V Note that incorrect setting of this register may lead to a safety hazard condition. Protected by user key R16458 (404Ah) Charger Status 9 CHG_TOPOFF 0 Battery Charger constant-voltage charge mode status 0 = Constant-voltage mode not active 1 = Constant-voltage mode is active 8 CHG_ACTIVE 0 Battery Charger status 0 = Not charging 1 = Charging Table 57 Battery Charger Control The Battery Charger is associated with a number of Interrupt flags. Whenever the Battery Charger state changes, the CHG_MODE_EINT interrupt is set (see Section 17.7.8). This interrupt is set whenever charging starts, charging stops, fast charge is selected, fast charge is de-selected, an overtemperature condition occurs, or if the charger detects a battery failure. The CHG_START_EINT interrupt is also set whenever Battery Charging commences, including after pause due to USB limit or over-temperature condition. |
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