參數(shù)資料
型號(hào): MPC8544EDVTANG
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, FC-PBGA-783
文件頁數(shù): 101/128頁
文件大小: 1411K
代理商: MPC8544EDVTANG
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1
74
Freescale Semiconductor
High-Speed Serial Interfaces (HSSI)
Figure 49 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 MPC8544E SerDes reference clock
input’s DC requirement.
Figure 49. DC-Coupled Differential Connection with HCSL Clock Driver (Reference Only)
Figure 50 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 MPC8544ESerDes reference clock
input’s allowed range (100 to 400mV), AC-coupled connection scheme must be used. It assumes the
LVDS output driver features 50-
Ω termination resistor. It also assumes that the LVDS transmitter
establishes its own common mode level without relying on the receiver or other external component.
Figure 50. AC-Coupled Differential Connection with LVDS Clock Driver (Reference Only)
50
Ω
50
Ω
SDn_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.
CLK_Out
MPC8544E
50
Ω
50
Ω
SDn_REF_CLK
Clock Driver
100
Ω differential PWB trace
SerDes Refer.
CLK Receiver
Clock Driver
CLK_Out
LVDS CLK Driver Chip
10 nF
MPC8544E
相關(guān)PDF資料
PDF描述
MPC8544AVTANG 32-BIT, 400 MHz, MICROPROCESSOR, PBGA783
MPC8544AVTAQG 32-BIT, 400 MHz, MICROPROCESSOR, PBGA783
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