SPC5123YVY400B Freescale Semiconductor, SPC5123YVY400B Datasheet - Page 76

• Manufacturer Part Number: SPC5123YVY400B
• Manufacturer: Freescale Semiconductor

Specifications of SPC5123YVY400B

• Lead Free Status / Rohs Status: Compliant

System Design Information
The filter for System/Core PLLVDD to VSS should be connected to the power and ground planes, respectively, not fingers of
the planes.
In addition to keeping the filter components for System/Core PLLVDD as close as practical to the body of the MPC5121e as
previously mentioned, special care should be taken to avoid coupling switching power supply noise or digital switching noise
onto the portion of that supply between the filter and the MPC5121e.
The capacitors for C2 in the figure below should be rated X5R or better due to temperature performance.
4.3
To ensure reliable operation, connect unused inputs to an appropriate signal level. Unused active low inputs should be tied to
VDD_IO. Unused active high inputs should be connected to VSS. All NC (no-connect) signals must remain unconnected.
Power and ground connections must be made to all external VDD and VSS pins of the MPC5121e/MPC5123.
The unused AVDD_FUSEWR power should be connecetd to VSS directly or via a resistor.
For DDR or LPDDR modes the unused pins MVTT[3:0] for DDR2 Termination voltage can be unconnected.
The SATA PHY needs to be powered even if it is not used in an application. In this case, you should not enable the SATA
oscillator and the SATA PHY by software.
76
Connection Recommendations
Figure 58. Recommended Connection for Pins of Unused SATA PHY
Power supply
source
VDD_CORE
VDD_CORE
VDD_IO
1.7-2.6V
VSS
NC
NC
NC
NC
NC
NC
VSS
VSS
VSS
NC
C1=1 μF
MPC5121E/MPC5123 Data Sheet, Rev. 3
R1=10 Ω
Figure 57. Power Supply Filtering
SATA_XTALI
SATA_ANAVIZ
SATA_TXP
SATA_RXP
SATA_XTALO
SATA_RESREF
SATA_TXN
SATA_RXN
SATA_PLL_VSSA
SATA_VDDA_3P3
SATA_RX_VSSA
SATA_VDDA_1P2
SATA_VDDA_VREG
SATA_TX_VSSA
SATA_PLL_VDDA1P2
C2=0.1 μF
MPC5121e/MPC5123
AVDD device pin
Freescale Semiconductor