參數(shù)資料
型號: VNC1L-1A
廠商: Future Technology Devices International Ltd
元件分類: 總線控制器
中文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封裝: 7 X 7 MM, 0.50 MM PITCH, GREEN, LQFP-48
文件頁數(shù): 14/32頁
文件大小: 672K
代理商: VNC1L-1A
Copyright 2009 Future Technology Devices International Limited
21
Document Reference No.: FT_000030
Vinculum VNC1L Embedded USB Host Controller IC Datasheet Version 2.02
Clearance No.: FTDI# 50
5.3.2 Read Transaction
When in parallel FIFO interface mode, the timing of a read operation on the FIFO interface is shown in
Figure 5.7 FIFO Read Cycle
Time
Description
Minimum
Maximum
Unit
T1
RD Active Pulse Width
50
-
ns
T2
RD to RD Pre-Charge Time
50 + T6
-
ns
T3
RD Active to Valid Data*
20
50
ns
T4
Valid Data Hold Time from RD Inactive*
0
-
ns
T5
RD Inactive to RXF#
0
25
ns
T6
RXF Inactive After RD Cycle
80
-
ns
Table 5.10 FIFO Read Cycle Timings
*Load = 30pF
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