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WM8321 数据表(PDF) 197 Page - Wolfson Microelectronics plc |
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WM8321 数据表(HTML) 197 Page - Wolfson Microelectronics plc |
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197 / 253 page  Production Data WM8321 w PD, February 2012, Rev 4.0 197 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO 66h to 7Fh = 3.4V 1:0 DC3_ON_VSE L [1:0] 00 DC-DC3 ON Voltage select DC3_ON_VSEL [6:0] selects the DC-DC3 output voltage from 0.85V to 3.4V in 25mV steps. See DC3_ON_VSEL [6:2] for definition. Register 4062h DC3 ON Config REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R16483 (4063h) DC3 SLEEP Control 15:13 DC3_SLP_SLO T [2:0] 000 DC-DC3 SLEEP Slot select 000 = SLEEP voltage / operating mode transition in Timeslot 5 001 = Disable in Timeslot 5 010 = Disable in Timeslot 4 011 = Disable in Timeslot 3 100 = Disable in Timeslot 2 101 = Disable in Timeslot 1 110 = SLEEP voltage / operating mode transition in Timeslot 3 111 = SLEEP voltage / operating mode transition in Timeslot 1 If DC-DC3 is assigned to a Hardware Enable Input, then codes 001-101 select in which timeslot the converter enters its SLEEP condition. 9:8 DC3_SLP_MO DE [1:0] 11 DC-DC3 SLEEP Operating Mode 00 = Forced Continuous Conduction Mode 01 = Auto Mode (Continuous / Discontinuous Conduction with Pulse-Skipping) 10 = LDO Mode 11 = Hysteretic Mode 6:0 DC3_SLP_VSE L [6:0] 000_0000 DC-DC3 SLEEP Voltage select 0.85V to 3.4V in 25mV steps 00h = 0.85V 01h = 0.875V … 65h = 3.375V 66h to 7Fh = 3.4V Register 4063h DC3 SLEEP Control REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R16484 (4064h) DC4 Control 1 13 DC4_SLV 0 DC-DC4 Slave Mode select 0 = Disabled 1 = Enabled DC4_SLV = 1, then DC-DC4 is a slave to DC-DC3, and both converters are controlled by the DC-DC3 registers. This field can only be written to by loading configuration settings from OTP/ICE. In all other cases, this field is Read Only. |
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