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USB3750 Datasheet(PDF) 16 Page - Microchip Technology |
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USB3750 Datasheet(HTML) 16 Page - Microchip Technology |
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16 / 31 page  USB375x DS00001824A-page 16 2011 - 2014 Microchip Technology Inc. FIGURE 4-5: CHARGER DETECTION FLOW CHART (USB3751-1) Start Chrg Detection ChrgDetComplete = 0 Drive DP VDAT_SRC for TVDPSRC_ON VDAT Detect? DCP Detected Exit Chrg Detection ChrgDetComplete = 1 =1 Any UVLO or OVLO Exit Chrg Detection SE1 Low Current Charger Enable 100mA after TVLO_RELEASE Wait TVDPSRC_HICRNT SE1? =1 Release and wait TCD_SE1 =0 CDP Detected SE1 High Current Charger RxHiCurr? =1 =0 SDP Detected UVLO < VBUS < OVLO Start TVLO_RELEASE Enable IDP_SRC and RPD_DM Enable OVP Switch =0 Disable 100mA current limit Clear Charger Detection Register Wait for DP Low or TDCD_TOUT Disable IDP_SRC and RPD_DM =1 VDAT Detect? Drive DM VDAT_SRC for TVDPSRC_ON =0 =1 |
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