參數(shù)資料
型號: MC8640DVU1250HE
廠商: Freescale Semiconductor
文件頁數(shù): 91/130頁
文件大?。?/td> 0K
描述: IC MPU DUAL CORE E600 1023FCCBGA
標準包裝: 1
系列: MPC86xx
處理器類型: 32-位 MPC86xx PowerPC
速度: 1.25GHz
電壓: 1.05V
安裝類型: 表面貼裝
封裝/外殼: 1023-BCBGA,F(xiàn)CCBGA
供應商設備封裝: 1023-FCCBGA(33x33)
包裝: 托盤
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
63
High-Speed Serial Interfaces (HSSI)
Figure 43 shows the SerDes reference clock connection reference circuits for HCSL type clock driver. It
assumes that the DC levels of the clock driver chip is compatible with MPC8640D SerDes reference clock
input’s DC requirement.
NOTE
Figure 43–Figure 46 are for conceptual reference only. Due to the
differences in the clock driver chip’s internal structure, output impedance,
and termination requirements among various clock driver chip
manufacturers, the clock circuit reference designs provided by clock driver
chip vendor may be different from what is shown above. They may also vary
from one vendor to the other. Therefore, Freescale Semiconductor can
neither provide the optimal clock driver reference circuits, nor guarantee the
correctness of the following clock driver connection reference circuits. The
system designer is recommended to contact the selected clock driver chip
vendor for the optimal reference circuits with the MPC8640D SerDes
reference clock receiver requirement provided in this document.
Figure 43. DC-Coupled Differential Connection with HCSL Clock Driver (Reference Only)
Figure 44 shows the SerDes reference clock connection reference circuits for LVDS type clock driver.
Since LVDS clock driver’s common mode voltage is higher than the MPC8640D SerDes reference clock
input’s allowed range (100 to 400mV), AC-coupled connection scheme must be used. It assumes the
50
Ω
50
Ω
SD
n_REF_CLK
SD
n_REF_CLK
Clock Driver
100
Ω differential PWB trace
Clock driver vendor dependent
source termination resistor
SerDes Refer.
CLK Receiver
Clock Driver
CLK_Out
HCSL CLK Driver Chip
33
Ω
33
Ω
Total 50
Ω. Assume clock driver’s
output impedance is about 16
Ω.
MPC8640D
CLK_Out
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