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IOBUS0 数据表(PDF) 63 Page - Future Technology Devices International Ltd.

部件名 IOBUS0
功能描述  Vinculum-II Embedded Dual USB Host Controller IC
PDF  88 Pages
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制造商  FTDI [Future Technology Devices International Ltd.]
网页  http://www.ftdichip.com
标志 FTDI - Future Technology Devices International Ltd.

IOBUS0 数据表(HTML) 63 Page - Future Technology Devices International Ltd.

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C opyright © Future T ec hnology Devic es I nternational Limited
Datasheet
Vinculum-II Embedded Dual USB Host Controller IC
V ers ion 1 .7
Doc ument N o.: FT _000138 C learance N o.: FT DI# 1 43
Time
Description
Minimum
Typical
Maximum
Unit
t1
CLKOUT period
20.83
ns
t2
CLKOUT high period
9.38
10.42
11.46
ns
t3
CLKOUT low period
9.38
10.42
11.46
ns
t4
CLKOUT to RXF#
1
7.83
ns
t5
CLKOUT to
read DATA valid
1
7.83
ns
t6
OE# to read DATA valid
1
7.83
ns
t7
CLKOUT to OE#
1
7.83
ns
t8
RD# setup time
12
ns
t9
RD# hold time
0
ns
t10
CLKOUT TO TXE#
1
7.83
ns
t11
Write DATA setup time
12
ns
t12
Write DATA hold time
0
ns
t13
WR# setup time
12
ns
t14
WR# hold time
0
ns
Table 6.19 Synchronous FIFO mode Read / Write Timing
6.8 General Purpose Timers
In VNC2 there are 4 General Purpose Timers available. Three are available to the designer and one is
reserved for the RTOS.
The timers have the following features:
16 bit
Count down
One shot and auto-reload
enable
Interrupt on zero
6.9 Pulse Width Modulation
VNC2 provides 8 Pulse Width Modulation (PWM) outputs. These can be used to generate PWM signals
which can be used to control motors, DC/DC converters, AC/DC supplies, etc. Further information is
available in an Application Note AN_140 - Vinculum-II PWM Example.
The features of the PWM module are as follows:
8 PWM outputs
A trigger input
8-bit prescaler
16-bit counter



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