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AS3677 датащи(PDF) 17 Page - ams AG |
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AS3677 датащи(HTML) 17 Page - ams AG |
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17 / 68 page ![]() www.austriamicrosystems.com/AS3677 1v3-1 16 - 67 AS3677 Datasheet - D e ta i l e d D e s c r i p t i o n 8.3.4 Charge Pump Registers Table 13. Reg control Register Addr: 00h Reg control This register controls the Charge Pump. Bit Bit Name Default Access Description 2 cp_on 0R/W 0 Set Charge Pump into 1:1 mode (off state) unless cp_auto_on is set 1 Enable manual or automatic mode switching Table 14. CP control Register Addr: 23h CP control This register enables/disables the Charge Pump and the Step Up DC/DC Converter. Bit Bit Name Default Access Description 0 cp_clk 0R/W Clock frequency selection. 01 MHz 1 500 kHz 2:1 cp_mode 00b R/W Charge Pump mode (in manual mode sets this mode, in automatic mode reports the actual mode used) 00 1:1 mode 01 10 1:2 mode 11 4:3 cp_mode_switching 00b R/W Set the mode switching algorithm 00 Automatic Mode switching 01 10 Manual Mode switching; register cp_mode defines the actual charge pump mode used 11 5 cp_start_debounce 0R/W 0 Mode switching debounce timer is always 240µs 1 Upon startup (cp_on set to 1) the mode switching debounce time is first started with 2ms then reduced to 240µs 6 cp_auto_on 1R/W 0 Charge Pump is switched on/off with cp_on 1 Charge Pump is automatically switched on if a current sink, which is connected to the charge pump (defined by registers CP Mode Switch 1 & 2) is switched on |
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