参数资料
型号: MC8641DVU1333JB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023
封装: 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023
文件页数: 91/130页
文件大小: 1493K
代理商: MC8641DVU1333JB
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
63
High-Speed Serial Interfaces (HSSI)
—The SDn_REF_CLK input average voltage must be between 200 and 400 mV. Figure 42 shows
the SerDes reference clock input requirement for single-ended signaling mode.
— To meet the input amplitude requirement, the reference clock inputs might need to be DC or
AC-coupled externally. For the best noise performance, the reference of the clock could be DC
or AC-coupled into the unused phase (SDn_REF_CLK) through the same source impedance as
the clock input (SDn_REF_CLK) in use.
Figure 40. Differential Reference Clock Input DC Requirements (External DC-Coupled)
Figure 41. Differential Reference Clock Input DC Requirements (External AC-Coupled)
Figure 42. Single-Ended Reference Clock Input DC Requirements
SD
n_REF_CLK
SD
n_REF_CLK
Vmax < 800 mV
Vmin > 0V
100 mV < Vcm < 400 mV
200 mV < Input Amplitude or Differential Peak < 800 mV
SD
n_REF_CLK
SD
n_REF_CLK
Vcm
200 mV < Input Amplitude or Differential Peak < 800 mV
Vmax < Vcm + 400 mV
Vmin > Vcm - 400 mV
SD
n_REF_CLK
SD
n_REF_CLK
400 mV < SD
n_REF_CLK Input Amplitude < 800 mV
0V
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