參數(shù)資料
型號(hào): MSC8256TVT1000B
廠商: Freescale Semiconductor
文件頁數(shù): 59/70頁
文件大?。?/td> 0K
描述: IC DSP 6 CORE 1GHZ 783FCPBGA
標(biāo)準(zhǔn)包裝: 1
系列: StarCore
類型: SC3850 內(nèi)核
接口: 以太網(wǎng),I²C,PCI,RGMII,串行 RapidIO,SGMII,SPI,UART/USART
時(shí)鐘速率: 1.0GHz
非易失內(nèi)存: ROM(96 kB)
芯片上RAM: 576kB
電壓 - 輸入/輸出: 2.50V
電壓 - 核心: 1.00V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MSC8256 Six-Core Digital Signal Processor Data Sheet, Rev. 6
Hardware Design Considerations
Freescale Semiconductor
62
3.5.1.2
DDR Interface Is Used With 32-Bit DDR Memory Only
Table 41 lists unused pin connection when using 32-bit DDR memory. The 32 most significant data lines are not used.
MWE
NC
MECC[7–0]
NC
MDM8
NC
MDQS8
NC
MDQS8
NC
MAPAR_OUT
NC
MAPAR_IN
NC
MVREF3
NC
GVDD1/GVDD23
NC
Notes:
1.
For the signals listed in this table, the initial M stands for M1 or M2 depending on which DDR controller is not used.
2.
If the DDR controller is not used, disable the internal DDR clock by setting the appropriate bit in the System Clock Control
Register (SCCR) and put all DDR I/O in sleep mode by setting DRx_GCR[DDRx_DOZE] (for DDR controller x). See the
Clocks and General Configuration Registers chapters in the MSC8256 Reference Manual for details.
3.
For MSC8256 Revision 1 silicon, these pins were connected to GND. For newer revisions of the MSC8256, connecting these
pins to GND increases device power consumption.
Table 41. Connectivity of DDR Related Pins When Using 32-bit DDR Memory Only
Signal Name
Pin Connection
MDQ[31–0]
in use
MDQ[63–32]
NC
MDQS[3–0]
in use
MDQS[7–4]
NC
MDQS[3–0]
in use
MDQS[7–4]
NC
MA[15–0]
in use
MCK[2–0]
in use
MCK[2–0]
in use
MCS[1–0]
in use
MDM[3–0]
in use
MDM[7–4]
NC
MBA[2–0]
in use
MCAS
in use
MCKE[1–0]
in use
MODT[1–0]
in use
MMDIC[1–0]
in use
MRAS
in use
Table 40. Connectivity of DDR Related Pins When the DDR Interface Is Not Used (continued)
Signal Name
Pin Connection
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