MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
C-1
Appendix C
Clock and Board Guidelines
The MPC561/MPC563 built-in PLL, oscillator, and other analog and sensitive circuits require that the
board design follow special layout guidelines to ensure proper operation of the chip clocks. This appendix
describes how the clock supplies and external components should be connected in a system. These
guidelines must be fulfilled to reduce switching noise which is generated on internal and external buses
during operation. Any noise injected into the sensitive clock and PLL logic reduces clock performance.
The USIU maintains a PLL loss-of-lock warning indication that can be used to determine the clock
stability in the MPC561/MPC563.
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...