MC8640DTHX1067NE Freescale Semiconductor, MC8640DTHX1067NE Datasheet - Page 65

• Manufacturer Part Number: MC8640DTHX1067NE
• Description: IC MPU DUAL CORE E600 1023FCCBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC8640DTHX1067NE

• Processor Type: MPC86xx PowerPC 32-Bit
• Speed: 1.067GHz
• Voltage: 0.95V
• Mounting Type: Surface Mount
• Package / Case: 1023-FCCBGA
• Processor Series: MPC8xxx
• Core: e600
• Development Tools By Supplier: MCEVALHPCN-8641D
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: No

Please consult with the clock driver chip manufacturer to verify whether this connection scheme is
compatible with a particular clock driver chip.
Figure 46
It assumes the DC levels of the clock driver are compatible with MPC8640D SerDes reference clock
input’s DC requirement.
13.2.4
The clock driver selected should provide a high quality reference clock with low phase noise and
cycle-to-cycle jitter. Phase noise less than 100 kHz can be tracked by the PLL and data recovery loops and
is less of a problem. Phase noise above 15 MHz is filtered by the PLL. The most problematic phase noise
Freescale Semiconductor
Single-Ended
CLK Driver Chip
Clock Driver
LVPECL CLK
Driver Chip
Clock Driver
Clock Driver
Figure 45. AC-Coupled Differential Connection with LVPECL Clock Driver (Reference Only)
shows the SerDes reference clock connection reference circuits for a single-ended clock driver.
AC Requirements for SerDes Reference Clocks
CLK_Out
CLK_Out
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
CLK_Out
Figure 46. Single-Ended Connection (Reference Only)
33 Ω
R1
R1
100 Ω differential PWB trace
Total 50 Ω. Assume clock driver’s
output impedance is about 16 Ω.
R2
R2
50 Ω
100 Ω differential PWB trace
10nF
10nF
10nF
SD n _REF_CLK
SD n _REF_CLK
SD n _REF_CLK
SD n _REF_CLK
50 Ω
50 Ω
High-Speed Serial Interfaces (HSSI)
50 Ω
50 Ω
MPC8640D
MPC8640D
SerDes Refer.
CLK Receiver
SerDes Refer.
CLK Receiver
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