VNC2-32Q1B-TRAY FTDI, Future Technology Devices International Ltd, VNC2-32Q1B-TRAY Datasheet - Page 68
![IC USB HOST VINCULUM-II 32QFN](/photos/6/82/68259/ftdi_vinculum_vnc2_sml.jpg)
VNC2-32Q1B-TRAY
Manufacturer Part Number
VNC2-32Q1B-TRAY
Description
IC USB HOST VINCULUM-II 32QFN
Manufacturer
FTDI, Future Technology Devices International Ltd
Series
Vinculum-IIr
Datasheet
1.VNC2-32Q1B-REEL.pdf
(90 pages)
Specifications of VNC2-32Q1B-TRAY
Mfg Application Notes
Vinculum-II IO Cell Description AppNote Vinculum-II Debug Interface Description AppNote Vinculum-II IO Mux Explained AppNote Vinculum-II PWM Example AppNote Migrating Vinculum Designs AppNote
Controller Type
USB 2.0 Controller
Interface
SPI Serial, USB, UART
Voltage - Supply
1.62 V ~ 1.98 V
Current - Supply
25mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
VNC2-32Q1A-TRAY
VNC2-32Q1A-TRAY
VNC2-32Q1A-TRAY
7
VNC2 has two USB 1.1 and USB 2.0 compliant interfaces available either as a USB host or slave device
capable of supporting 1.5Mb/s (Low Speed) and 12Mb/s (full Speed) transactions. The USB specification
defines 4 transfer types that are all supported by VNC2:
USB 2.0 - 480Mb/s (High Speed) transactions shall not be supported as the power requirements are
deemed excessive for VNC2 target applications. VNC2 configured to Full speed is supported.
VNC2 has two main USB modes of operation: host mode or client (or Slave) mode. As a client, VNC2 is
able to connect to a PC and act like a USB device. At the same time as being a client the second USB
interface is also able to act as a host and connect to a second USB device using two separate ports i.e.
Port 0 – Host Port 1- Client. Each USB interface can be either a host or a client not both at the same
time. The following diagrams in figure 7.1 give examples of possible modes of operation:
Figure 7-1 USB Modes
USB Interfaces
Port 0 in Slave mode and Port 1 in Host mode
VNC2
VNC2
Port 0 and 1 in Host mode
Port 0
Port 1
Interrupt transfer: Used for legacy devices where the device is periodically polled to see if the
device has data to transfer e.g. Mouse, Keyboard.
Bulk Transfer: Used for transferring large blocks of data that have no periodic or transfer rate
requirement e.g. USB to RS232 (FT232R device), memory sticks.
Isochronous Transfer: Used for transferring data that requires a constant delivery rate e.g.
web cam, wireless modem.
Control Transfer: Used to transfer specific requests to all types USB devices (most commonly
used during device configuration).
Port 0
Port 1
BOMS Flash Disk
BOMS Flash Disk
Copyright © 2010 Future Technology Devices International Limited
USB Device
USB Host
VINCULUM-II EMBEDDED DUAL USB HOST CONTROLLER IC Datasheet
Port 0 and 1 in Slave mode (Null Modem type application)
VNC2
VNC2
Port 0
Port 1
Port 0
Port 1
Port 0 in Slave mode
Document No.: FT_000138
Clearance No.: FTDI#
USB Host
USB Host
USB Host
Version -
143
1.2
68