FEC Electrical Characteristics
U1
U1
UtpClk
U5
PHREQn
U3
3
U4
4
RxClav
HighZ at MPHY
HighZ at MPHY
U2
2
RxEnb
UTPB
SOC
U3
3
U4
4
Figure 12-68. UTOPIA Receive Timing
Figure 12-69 shows signal timings during UTOPIA transmit operations.
U1
U1
1
UtpClk
U5
5
PHSELn
U3
3
U4
4
TxClav
HighZ at MPHY
HighZ at MPHY
U2
2
TxEnb
UTPB
SOC
U5
5
Figure 12-69. UTOPIA Transmit Timing
Part XIII FEC Electrical Characteristics
This section provides theAC electrical specifications for the Fast Ethernet controller (FEC).
Note that the timing specifications for the MII signals are independent of system clock
frequency (part speed designation). Also, MII signals use TTL signal levels compatible
with devices operating at either 5.0 V or 3.3 V.
66
MPC860 Family Hardware Specifications
MOTOROLA
MOTOROLA [ MOTOROLA ]
