參數(shù)資料
型號: MPC8568E-MDS-PB
廠商: Freescale Semiconductor
文件頁數(shù): 42/139頁
文件大?。?/td> 0K
描述: MOD DEV SYSTEM POWERQUICC III
標(biāo)準(zhǔn)包裝: 1
系列: PowerQUICC III™
類型: MPU
適用于相關(guān)產(chǎn)品: MPC8568E
所含物品:
MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1
136
Freescale Semiconductor
Ordering Information
SD_TX[7:0]
25.9.2
Unused input
25.9.2.1
SerDes block power not supplied
If the high speed interface is not used at all, then SCOREVDD/XVDD/AVDD_SRDS can be tied to GND,
all receiver inputs should be tied to the GND as well. This includes:
SD_RX[7:0]
SD_REF_CLK
SD_REF_CLK
SD_RX_CLK
SD_RX_FRM_CTL
25.9.2.2
SerDes Interface Partly used
If the high-speed SerDes interface is partly unused, any of the unused receiver pins should be terminated
as follows:
SD_RX[7:0] = tied to SCOREGND
SD_REF_CLK = tied to SCOREGND
NOTE
Power down the unused lane through SERDESCR1[0:7] register
(offset = 0xE_0F08) (This prevents the oscillations and holds the receiver
output in a fixed state.) that maps to SERDES lane 0 to lane 7 accordingly.
During HRESET/POR, the high-speed interface must be in Serial RapidIO mode and/or PCI Express mode
according to the state of the PE[8:10]. Software must disable this mode through DEVDISR[SRIO] or
DEVDISR[PCIE] accordingly during software initialization.
26 Ordering Information
Contact your local Freescale sales office or regional marketing team for order information.
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