Datasheet

MPC5121E/MPC5123 Data Sheet, Rev. 5
System Design Information
Freescale Semiconductor80
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.
Figure 60. Recommended Connection for Pins of Unused SATA PHY
Figure 61. Recommended connection for pins of unused USB PHY
4.4 Pull-Up/Pull-Down Resistor Requirements
The MPC5121e/MPC5123 requires external pull-up or pull-down resistors on certain pins.
4.4.1 Pull-Down Resistor Requirements for TEST pin
The MPC5121e/MPC5123 requires a pull-down resistor on the test pin TEST.
SATA_XTALO
SATA_XTALI
V
SS
NC
SATA_RESREF
SATA_ANAVIZ
NC
NC
SATA_TXN
SATA_TXP
NC
NC
SATA_RXN
SATA_RXP
NC
NC
SATA_VDDA_1P2
SATA_VDDA_3P3
V
DD_CORE
SATA_PLL_VDDA1P2
SATA_VDDA_VREG
1.7–2.6 V
SATA_RX_VSSA
SATA_PLL_VSSA
V
SS
V
SS
SATA_TX_VSSA
V
SS
V
DD_CORE
V
DD_IO
MPC5121e/
MPC5123
USB_XTALO
USB_XTALI
V
SS
NC
USB_TPA
NC
USB_DN
USB_DP
Weak pull-up or pull-down
USB_UID
USB_VBUS
V
SS
USB_PLL_PWR3
USB_PLL_GND
V
SS
USB_VSSA_BIAS
USB_RREF
V
SS
V
SS
USB_VDDA_BIAS
V
SS
V
SS
V
DD_IO
USB_VSSA
V
SS
USB_VDDA
V
DD_IO
MPC5121e/MPC5123