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USB5744/2G 数据表(PDF) 29 Page - Microchip Technology |
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USB5744/2G 数据表(HTML) 29 Page - Microchip Technology |
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29 / 51 page  2022 Microchip Technology Inc. and its subsidiaries DS00001855L-page 29 USB5744 8.4.2.3 Port Power Control with Single Poly Fuse and Multiple Loads Many customers use a single poly fuse to power all their devices. For the ganged situation, all power control pins must be tied together. 8.4.3 PORT CONTROLLER CONNECTION EXAMPLE FIGURE 8-6: PORT POWER CONTROL WITH GANGED CONTROL WITH POLY FUSE FIGURE 8-7: USB5744 WITH 4 GENERIC PORT POWER CONTROLLERS (2 BC ENABLED) Pull-Up Enable USB Device Poly Fuse 5V Pull-Up Enable Pull-Up Enable 50k 50k 50k PRTPWR OCS USB Device USB Device PRT_CTLx PRT_CTLy PRT_CTLz USB5744 Port 1 Connector Generic Port Power Controller POWER (High Current) (BC Enabled) OCS D+ D - VBUS D+ D- Port 2 Connector Generic Port Power Controller POWER (High Current) (BC Enabled) OCS D+ D - VBUS D+ D- PRT_CTL2 PRT_CTL1 Port 3 Connector Generic Port Power Controller POWER OCS D+ D - VBUS D+ D- PRT_CTL3 Port 4 Connector Generic Port Power Controller POWER OCS D+ D - VBUS D+ D- PRT_CTL4 |
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