参数资料
型号: MSC8144ADS
厂商: Freescale Semiconductor
文件页数: 68/80页
文件大小: 0K
描述: ADS FOR MSC8144 DEVICE
标准包装: 1
类型: DSP
适用于相关产品: MSC8144
所含物品: AMC 卡、电源、缆线、USB TAP、硬件和说明文档
Hardware Design Considerations
Table 51. Connectivity of DDR Related Pins When the DDR Interface Is Not Used (continued)
MDM[0–3]
MBA[0–2]
MCAS
MCKE[0–1]
MODT[0–1]
MDIC[0–1]
MRAS
MWE
MECC[0–7]
ECC_MDM
ECC_MDQS
ECC_MDQS
MV REF
V DDDDR
Signal Name
Pin Connection
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
GND
Note:
3.4.1.2
If the DDR controller is not used, disable the internal DDR clock by writing a 1 to the CLK11DIS bit in the System Clock Control
Register (SCCR[CLK!11DIS]). See Chapter 7 , Clocks , in the MSC8144 Reference Manual for details.
16-Bit DDR Memory Only
Table 52 lists unused pin connection when using 16-bit DDR memory. The 16 most significant data lines are not used.
Table 52. Connectivity of DDR Related Pins When Using 16-bit DDR Memory Only
MDQ[0–15]
MDQ[16–31]
MDQS[0–1]
MDQS[2–3]
MDQS[0–1]
MDQS[2–3]
MA[0–15]
MCK[0–2]
MCK[0–2]
MCS[0–1]
MDM[0–1]
MDM[2–3]
MBA[0–2]
MCAS
MCKE[0–1]
MODT[0–1]
MDIC[0–1]
MRAS
Signal Name
Pin connection
in use
pull-up to V DDDDR
in use
pull-down to GND
in use
pull-up to V DDDDR
in use
in use
in use
in use
in use
NC
in use
in use
in use
in use
in use
in use
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
68
Freescale Semiconductor
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