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FT313HQ-R 数据表(PDF) 52 Page - List of Unclassifed Manufacturers

部件名 FT313HQ-R
功能描述  Future Technology Devices International Ltd
PDF  67 Pages
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制造商  ETC2 [List of Unclassifed Manufacturers]
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标志 ETC2 - List of Unclassifed Manufacturers

FT313HQ-R 数据表(HTML) 52 Page - List of Unclassifed Manufacturers

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Copyright © 2013 Future Technology Devices International Limited
52
Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.2
Clearance No.: FTDI# 318
6.4.2 DMA timing
DMA timing characteristics (Ambient Temperature = -40°C to +85°C)
Parameter
Description
Min
Max
Unit
Tsudreqdack
DREQ Set-up Time before DACK
Assertion
0
-
ns
Tddackdreq
DACK De-assertion to Next DREQ
Assertion Time
18
-
ns
Thdreqdack
DREQ Hold Time after Last Strobe
Assertion
-
35
ns
Trwp
RD_N/WR_N Pulse Width
40
-
ns
Toe
Data Valid Time after RD_N Assertion
8
-
ns
Trdh
Read Data Hold Time after RD_N De-
asserts
4
9
ns
Twdh
Write Data Hold Time after WR_N De-
assertion
0
-
ns
Tdadvh
Write Data Set-up Time before WR_N
De-assertion
6
-
ns
Tsudackrw
DACK Set-up Time before
RD_N/WR_N Assertion
0
-
ns
Trwdack
DACK De-assertion after RD_N/WR_N
De-assertion
0
-
ns
Tcyc
DMA Read/Write Cycle Time
80
-
ns
Table 6-13 DMA timing
DREQ
DACK
RD_N/
WR_N
DATA[15:0]
(read)
DATA[15:0]
(write)
Tsudreqdack
Tsudackrw
Trwp
Tcyc
Thdreqdack
Tddackdreq
Trwdack
Toe
Trdh
Tdadvh
Twdh
DATA1
DATA2
DATAn
Figure 6-7 DMA read and write



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