MSC8144EC Datasheet, PDF (70/80 Pages) Freescale Semiconductor, Inc – Quad Core Digital Signal Processor

Hardware Design Considerations
3.4.4 Ethernet Related Pins
3.4.4.1 Ethernet Controller 1 (GE1) Related Pins
Note: Table 63 and Table 64 assume that the alternate function of the specified pin is not used. If the alternate function is
used, connect the pin as required to support that function.
3.4.4.1.1 GE1 Interface Is Not Used
Table 63 assumes that the GE1 signals are not used for any purpose (including any multiplexed functions) and that V_DDGE1 is
tied to GND.
Table 62. Connectivity of GE1 Related Pins When the GE1 Interface Is Not Used
GE1_COL
GE1_CRS
GE1_RD[0–4]
GE1_RX_ER
GE1_RX_CLK
GE1_RX_DV
GE1_SGMII_RX
GE1_SGMII_RX
GE1_SGMII_TX
GE1_SGMII_TX
GE1_TD[0–4]
GE1_TX_CLK
GE1_TX_EN
GE1_TX_ER
Signal Name
Pin Connection
NC
NC
NC
NC
NC
NC
GND_SXC
GND_SXC
NC
NC
NC
NC
NC
NC
3.4.4.1.2 Subset of GE1 Pins Required
When only a subset of the whole GE1 interface is used, such as for RMII, the unused GE1 pins should be connected as described
in Table 64. This table assumes that the unused GE1 pins are not used for any purpose (including any multiplexed function) and
that V_DDGE1 is tied to either 2.5 V or 3.3 V.
Table 63. Connectivity of GE1 Related Pins When only a subset of the GE1 Interface Is required
GE1_COL
GE1_CRS
GE1_RD[0–3]
GE1_RX_ER
GE1_RX_CLK
GE1_RX_DV
GE1_SGMII_RX
GE1_SGMII_RX
GE1_SGMII_TX
Signal Name
Pin Connection
GND
GND
GND
GND
GND
GND
GND_SXC
GND_SXC
NC
MSC8144EC Quad Core Digital Signal Processor Data Sheet, Rev. 6
70
Freescale Semiconductor