VNC2-48Q1B-REEL FTDI, VNC2-48Q1B-REEL Datasheet - Page 62
VNC2-48Q1B-REEL
Manufacturer Part Number
VNC2-48Q1B-REEL
Description
USB Interface IC Vinculum-II Dual USB Host/Dev IC QFN-48
Manufacturer
FTDI
Type
USB Host/Device Controllerr
Datasheet
1.VNC2-32Q1B-REEL.pdf
(90 pages)
Specifications of VNC2-48Q1B-REEL
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Temperature Range
- 40 C to + 85 C
Supply Current
25 mA
Operating Supply Voltage
1.8 V, 3.3V
Package / Case
QFN-48
Description/function
USB Vinculum-II Dual Host/Dev IC QFN-48
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
VINCULUM2
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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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