參數資料
型號: MSC8254SVT800B
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數字信號處理
英文描述: 0-BIT, OTHER DSP, PBGA783
封裝: 29 X 29 MM, LEAD FREE, PLASTIC, FCBGA-783
文件頁數: 35/68頁
文件大小: 909K
代理商: MSC8254SVT800B
MSC8254 Quad-Core Digital Signal Processor Data Sheet, Rev. 4
Electrical Characteristics
Freescale Semiconductor
40
Figure 13 shows the DDR SDRAM output timing diagram.
Figure 14 provides the AC test load for the DDR2 and DDR3 controller bus.
2.6.1.3
DDR2 and DDR3 SDRAM Differential Timing Specifications
This section describes the DC and AC differential timing specifications for the DDR2 and DDR3 SDRAM controller interface.
Figure 15 shows the differential timing specification.
Note:
VTR specifies the true input signal (such as MCK or MDQS) and VCP is the complementary input signal (such as
MCK or MDQS).
Figure 13. DDR SDRAM Output Timing
Figure 14. DDR2 and DDR3 Controller Bus AC Test Load
Figure 15. DDR2 and DDR3 SDRAM Differential Timing Specifications
ADDR/CMD
tDDKHAS, tDDKHCS
tDDKHMH
tDDKLDS
tDDKHDS
MDQ[x]
MDQS[n]
MCK[n]
tMCK
tDDKLDX
tDDKHDX
D1
D0
tDDKHAX ,tDDKHCX
Write A0
NOOP
tDDKHME
tDDKHMP
Output
Z0 = 50 Ω
RL = 50 Ω
VDDDDR/2
VTR
VCP
GND
GVDD
VOX or VIX
GVDD/2
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