V2DIP2-32 FTDI, Future Technology Devices International Ltd, V2DIP2-32 Datasheet - Page 12

• Manufacturer Part Number: V2DIP2-32
• Description: MOD MCU-USB HOST CTLR 24-DIP
• Manufacturer: FTDI, Future Technology Devices International Ltd
• Series: Vinculum-IIr

Specifications of V2DIP2-32

• Main Purpose: Interface, USB 2.0 Host/Controller
• Embedded: Yes, ASIC
• Utilized Ic / Part: VNC2-32Q
• Primary Attributes: Dual A-Type Connector, UART / Parallel FIFO / SPI Interfaces
• Secondary Attributes: LED Status Indicators
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1055

3.6.2 Timing Diagram – Asynchronous FIFO Mode Read and Write Cycle
When in Asynchronous FIFO interface mode, the timing of a read and write operation on the FIFO
interface is shown in Figure 3.3 and Table 3.7
Table 3.7 - Asynchronous FIFO Mode Read Cycle Timing
In asynchronous mode an external device can control data transfer driving FIFO_WR# and FIFO_RD#
inputs.
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.
Figure 3.3 – Asynchronous FIFO Mode Read and Write Cycle.
Time
t10
t11
t1
t2
t3
t4
t5
t6
t7
t8
t9
RD# inactive to RXF#
RXF# inactive after RD# cycle
RD# to Data
RD# active pulse width
RD# active after RXF#
WR# active to TXE# inactive
TXE# inactive after WR# cycle
DATA to TXE# active setup time
DATA hold time after WR# inactive
WR# active pulse width
WR# active after TXE#
Description
Copyright © 2010 Future Technology Devices International Limited
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V2DIP2-32 VNCL2-32Q Development Module Datasheet Version 1.01
Min
100
100
30
30
1
1
0
1
5
5
0
Max
14
14
14
-
-
-
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Document Reference No.: FT_000164
Clearance No.: FTDI# 151
11