mpc8641 Freescale Semiconductor, Inc, mpc8641 Datasheet - Page 67

• Manufacturer Part Number: mpc8641
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Figure 46
It assumes the DC levels of the clock driver are compatible with MPC8641D SerDes reference clock
input’s DC requirement.
Freescale Semiconductor
Single-Ended
CLK Driver Chip
Clock Driver
shows the SerDes reference clock connection reference circuits for a single-ended clock driver.
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
CLK_Out
Figure 46. Single-Ended Connection (Reference Only)
33 Ω
Total 50 Ω. Assume clock driver’s
output impedance is about 16 Ω.
50
100 Ω differential PWB trace
Ω
SD n _REF_CLK
SD n _REF_CLK
50 Ω
High-Speed Serial Interfaces (HSSI)
50 Ω
MPC8641D
SerDes Refer.
CLK Receiver
67