參數(shù)資料
型號(hào)： MSC8144E
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 數(shù)字信號(hào)處理
英文描述： 0-BIT, 150 MHz, OTHER DSP, PBGA783
封裝： 29 X 29 MM, LEAD FREE, PLASTIC, FCPBGA-783
文件頁數(shù)： 33/80頁
文件大小： 2284K
代理商： MSC8144E
Electrical Characteristics
MSC8144E Quad Core Digital Signal Processor Data Sheet, Rev. 0
Freescale Semiconductor
39
See also Reset Errata for PLL lock and reset duration.
2.7.4
DDR SDRAM AC Timing Specifications
This section describes the AC electrical characteristics for the DDR SDRAM interface.
2.7.4.1
DDR SDRAM Input Timings
Table 25 provides the input AC timing specifications for the DDR SDRAM when VDD(typ) = 2.5 V.
Table 26 provides the input AC timing specifications for the DDR SDRAM when VDD(typ) = 1.8 V.
Table 27 provides the input AC timing specifications for the DDR SDRAM interface.
Figure 8. Timing for a Reset Configuration Write
Table 25. DDR SDRAM Input AC Timing Specifications for 2.5-V Interface
Parameter
Symbol
Min
Max
Unit
AC input low voltage
VIL
—MVREF – 0.31
V
AC input high voltage
VIH
MVREF + 0.31
—
V
Note:
At recommended operating conditions with VDD of 2.5 ± 5%.
Table 26. DDR2 SDRAM Input AC Timing Specifications for 1.8-V Interface
Parameter
Symbol
Min
Max
Unit
AC input low voltage
VIL
—VREF – 0.25
V
AC input high voltage
VIH
VREF + 0.25
—
V
Note:
At recommended operating conditions with VDD of 1.8 ± 5%.
Table 27. DDR SDRAM Input AC Timing Specifications
Parameter
Symbol
Min
Max
Unit
Controller Skew for MDQS—MDQ/MECC/MDM1
400 MHz
333 MHz
266 MHz
200 MHz
tCISKEW
–365
–390
–428
–490
365
390
428
490
ps
Notes:
1.
tCISKEW represents the total amount of skew consumed by the controller between MDQS[n] and any corresponding bit that is
captured with MDQS[n]. Subtract this value from the total timing budget.
2.
At recommended operating conditions with VDD (1.8 V or 2.5 V) ± 5%
PORESET
HRESET
Input
Output (I/O)
SRESET
Output (I/O)
RCW_SRC2,RCW_SRC1,RCW_SRC0,STOP_BS and RCFG_CLKIN_RNG
pins must be valid
1
2
3
Reset configuration write
sequence during this
period.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MSC8144EC 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad Core Digital Signal Processor
MSC8144ESVT1000B 制造商:Freescale Semiconductor 功能描述:DSP 32-BIT 1GHZ 1000MIPS 783-PIN FCBGA BOX - Trays 制造商:Freescale Semiconductor 功能描述:ENCRYPTION PACSUN R2.1 783FCPBGA
MSC8144ESVT800A 制造商:Freescale Semiconductor 功能描述:DSP 32BIT 800MHZ 800MIPS 783FCBGA - Trays
MSC8144ESVT800B 制造商:Freescale Semiconductor 功能描述:DSP 32-BIT 800MHZ 800MIPS 783-PIN FCBGA EACH - Bulk 制造商:Freescale Semiconductor 功能描述:ENCRYPTION PACSUN R2.1 783FCPBGA
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