VNCLO-PSU-EU 参数 Datasheet PDF下载

Document Reference No.: FT_000327

Vinculo Development Module Datasheet Version 1.0

Clearance No.: FTDI#173

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Functionality

2.1 Power

The Vinculo requires +5V for the USB host ports to power USB devices from the module. This is further

regulated to +3.3V for VNC2.

A +9V/1A DC supply is also available which can be used as an AC-DC adapter (wall-wart). The +9V is

regulated to +5V and +3V3 on the Vinculo module.

As an alternative to the AC-DC adapter the on board regulators can be taken out of circuit with jumpers

to allow the +5V from a USB host port to power the module. Care should be taken with this approach as

a USB host port can only provide a maximum of 500mA, which must power the Vinculo and potentially

any devices connected to the Vinculo.

The +5V and +3V3 supplies may also be accessed on the J1 header pins.

VNC2 requires between 8 and 24mA depending on the clock speed at which the VNC2 core is running.

2.2 Input/Output

Due to the flexibility of the VNC2 IC the actual definition of each pin is not fixed. The firmware developed

for any application can use the VNC2 IO Mux to route a signal, e.g. UART TXD, to a range of IO pins. An

IOMux utility built into the free tool chain development environment, IDE, allows the developer to define

the IO from a GUI interface. The utility will then convert the users IO selection into C code to be included

as part of the project firmware...

There are 38 configurable IO pins available to the user, 8 of which are reserved for connecting to the

onboard ADC device. The other 30 pins may be used for GPIO, UART, SPI or FIFO connectivity depending

on the interface of the shield designed to connect to the Vinculo module.

There are 2 USB ports on the Vinculo. The firmware will determine if the port is configured for USB host

operation or USB device operation.

2.3 LEDs

There are 3 LEDs on Vinculo.

LED1 is driven by the VNC2-64Q IC depending on which firmware is loaded. It may be used to indicate

traffic on the USB slave port connected via CN3.

LED2 is driven by the VNC2-64Q IC depending on which firmware is loaded. It may be used to indicate

traffic on the USB host port connected via CN2.

LED3 is driven by the 3V3 supply connected to the VNC2-64Q IC. It will indicate when the Vinculo module

is powered.

Copyright © 2010 Future Technology Devices International Limited

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