VNC2-64Q1B-REEL FTDI, Future Technology Devices International Ltd, VNC2-64Q1B-REEL Datasheet - Page 62
![IC USB HOST CTLR VINCULUM 64QFN](/photos/6/82/68259/ftdi_vinculum_vnc2_sml.jpg)
VNC2-64Q1B-REEL
Manufacturer Part Number
VNC2-64Q1B-REEL
Description
IC USB HOST CTLR VINCULUM 64QFN
Manufacturer
FTDI, Future Technology Devices International Ltd
Series
Vinculum-IIr
Datasheet
1.VNC2-32Q1B-REEL.pdf
(90 pages)
Specifications of VNC2-64Q1B-REEL
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
64-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
768-1046-2
VNC2-64Q1A-REEL
VNC2-64Q1A-REEL
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- Download datasheet (2Mb)
Document No.: FT_000138
VINCULUM-II EMBEDDED DUAL USB HOST CONTROLLER IC Datasheet
1.2
Version -
143
Clearance No.: FTDI#
6.6.2 Read / Write Transaction Asynchronous FIFO Mode
When in Asynchronous FIFO interface mode, the timing of read and write operations on the FIFO
interface are shown in Figure 6-22 and Table 29.
In asynchronous mode an external device can control data transfer driving FIFO_WR# and FIFO_RD#
inputs. In contrast to synchronous mode, in asynchronous mode the 245 FIFO module generates the
output enable EN# signal. EN# signal is effectively the read signal RD#.
Current byte is available to be read when FIFO_RD# goes low. When FIFO_RD# goes high, FIFO_RXF#
output will also go high. It will only become low again when there is another byte to read.
When FIFO_WR# goes low FIFO_TXE# flag will always go high. FIFO_TXE# goes low again only when
there is still space for data to be written in to the module.
Copyright © 2010 Future Technology Devices International Limited
62
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