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FT120T-R 数据表(PDF) 29 Page - Future Technology Devices International Ltd.

部件名 FT120T-R
功能描述  USB Device Controller with Parallel Bus IC
PDF  40 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.

FT120T-R 数据表(HTML) 29 Page - Future Technology Devices International Ltd.

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Copyright © 2014 Future Technology Devices International Limited
29
Document No.: FT_000646
FT120 USB DEVICE CONTROLLER WITH PARALLEL BUS IC
Datasheet Version 1.2
Clearance No.: FTDI#
291
Figure 8-2 Parallel interface timing
Symbol
Parameter
Min
Max
Unit
Single-cycle DMA Timings:
tRHSH
DMREQ High to RD_n/WR_n High Time
120
ns
tAHRH
DMACK_n High to DMREQ High Time
330
ns
tSHAH
RD_n/WR_n High to DMACK_n High Time
130
ns
tEL
EOT_n Low Pulse Width (Simultaneous DMACK_n, RD_n/WR_n
and EOT_n low time)
10
ns
Burst DMA Timings:
tSLRL
RD_n/WR_n Low to DMREQ Low Time
40
ns
tRHSH
DMREQ High to RD_n/WR_n High Time
120
ns
tSHAH
RD_n/WR_n High to DMACK_n High Time
130
ns
EOT Timings:
tELRL
EOT_n Low to DMREQ Low Time
40
ns
Table 8-7 DMA timing characteristics



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