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FT900Q-R 数据表(PDF) 20 Page - Bridgetek Pte Ltd. |
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FT900Q-R 数据表(HTML) 20 Page - Bridgetek Pte Ltd. |
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20 / 67 page ![]() Copyright © Bridgetek Pte Ltd 20 FT900 /1/2/3 Revision C Embedded Microcontroller Datasheet Version 1.0 Document No.: BRT_000172 Clearance No.: BRT#087 Pin No. Name Type Description 64 VCCIO3V3 P +3.3V supply voltage. This is the supply voltage for all the I/O ports. Connect a 0.1uF decoupling capacitor. This pin must be connected to pin 33 and pin 46. 65 XI/CLKIN AI 12MHz clock frequency input to the Oscillator circuit or to internal clock generator circuit. 66 XIO AO Output from the Oscillator amplifier. 67 VCC1V2 P +1.2V Regulator power supply for USB. Provide +1.2V power to this pin. This pin must be connected to pin 63. Connect 0.1uF decoupling capacitor. 68 VUSB3V3 P +3.3V supply voltage. This is the supply voltage for USB device and host I/O ports. Connect 10uF and 0.1uF decoupling capacitors. This pin could be connected to all +3.3V power supply pins without 10uF capacitor. 69 D_DM AI/O USB device bidirectional DM line. 70 D_DP AI/O USB device bidirectional DP line. 71 DRREF AI USB device reference voltage input. Connect 12Kohm +/- 1% resistor to GND. 72 H_DM AI/O USB host bidirectional DM line. 73 H_DP AI/O USB host bidirectional DP line. 74 AGND P Analog Ground 75 HRREF AI USB host reference voltage input. Connect a 12 kΩ ± 1% resistor to GND. 76 VETH3V3 P +3.3V supply voltage. This is the supply voltage for Ethernet I/O ports. Connect 10uF and 0.1uF decoupling capacitors. This pin could be connected to all +3.3V power supply pins without 10uF capacitor. 77 VOUT2 P +1.2V Regulator power supply.[2] This is an internal regulator output. Connect 0.1uF decoupling capacitors. 78 EREFSET AI Ethernet reference voltage input.[2] Connect a 12.3 kΩ ± 1% resistor to GND. 79 VETH3V3 P +3.3V supply voltage. This is the supply voltage for Ethernet I/O ports. Connect a 0.1uF decoupling capacitor. This pin must be connected to pin 76. 80 RXIP I Ethernet receive data positive input.[2] Differential receive signal pair. 81 RXIN I Ethernet receive data negative input.[2] Differential receive signal pair. |
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