参数资料
型号: V2DIP2-32
厂商: FTDI, Future Technology Devices International Ltd
文件页数: 12/20页
文件大小: 0K
描述: MOD VINCULUM-II DEV 2 PORT 32DIP
标准包装: 5
系列: Vinculum-II
主要目的: 接口,USB 2.0 主机/控制器
嵌入式: 是,ASIC
已用 IC / 零件: VNC2-32Q
主要属性: 双路 A 型连接器,UART / 并行 FIFO / SPI 接口
次要属性: LED 状态指示器
已供物品:
产品目录页面: 634 (CN2011-ZH PDF)
相关产品: 768-1052-ND - MOD VINCULUM-II DEBUGGR/PROGRAMR
其它名称: 768-1055
Document Reference No.: FT_000164
V2DIP2-32 VNCL2-32Q Development Module Datasheet Version 1.01
Clearance No.: FTDI# 151
`
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
Figure 3.3 – Asynchronous FIFO Mode Read and Write Cycle.
Time
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
Description
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#
Min
1
100
1
30
0
1
100
5
5
30
0
Max
14
-
14
-
-
14
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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.
Copyright ? 2010 Future Technology Devices International Limited
11
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