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DM385 参数 Datasheet PDF下载

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型号: DM385
PDF下载: 下载PDF文件 查看货源
内容描述: DM385和DM388 DaVincia ? ¢数字媒体处理器 [DM385 and DM388 DaVinci™ Digital Media Processor]
分类和应用:
文件页数/大小: 280 页 / 2479 K
品牌: TI [ TEXAS INSTRUMENTS ]
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DM385, DM388  
SPRS821D MARCH 2013REVISED DECEMBER 2013  
www.ti.com  
Table 8-71. Data Routing Specification(1)  
NO.  
1
PARAMETER  
MIN  
TYP  
MAX  
DQLM0  
DQLM1  
DQLM2  
DQLM3  
25  
UNIT  
mils  
mils  
mils  
mils  
mils  
mils  
mils  
DB0 nominal length(2)(3)  
DB1 nominal length(2)(4)  
DB2 nominal length(2)(5)  
DB3 nominal length(2)(6)  
DBn skew(7)  
2
3
4
5
6
DQSn+ to DQSn- skew  
DQSn to DBn skew(7)(8)  
5
7
25  
8
Center-to-center DBn to other DDR3 trace spacing(9)(10)  
Center-to-center DBn to other DBn trace spacing(9)(11)  
4w  
3w  
9
10 DQSn center-to-center spacing(12)  
11 DQSn center-to-center spacing to other net(9)  
4w  
(1) External termination disallowed. Data termination should use built-in ODT functionality.  
(2) DQLMn is the longest Manhattan distance of a byte. r definition, see Section 8.13.3.16.2 and Figure 8-82.  
(3) DQLM0 is the longest Manhattan length for the net classes of Byte 0.  
(4) DQLM1 is the longest Manhattan length for the net classes of Byte 1.  
(5) DQLM2 is the longest Manhattan length for the net classes of Byte 2.  
(6) DQLM3 is the longest Manhattan length for the net classes of Byte 3.  
(7) Length matching is only done within a byte. Length matching across bytes is neither required nor recommended.  
(8) Each DQS pair is length matched to its associated byte.  
(9) Center-to-center spacing is allowed to fall to minimum (2w) for up to 1250 mils of routed length.  
(10) Other DDR3 trace spacing means other DDR3 net classes not within the byte.  
(11) This applies to spacing within the net classes of a byte.  
(12) DQS pair spacing is set to ensure proper differential impedance.  
250  
Peripheral Information and Timings  
Copyright © 2013, Texas Instruments Incorporated  
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Product Folder Links: DM385 DM388  
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