MPC857DSL Motorola, MPC857DSL Datasheet - Page 69

• Manufacturer Part Number: MPC857DSL
• Description: (MPC857 / MPC862) Hardware Specifications
• Manufacturer: Motorola

Figure 71 shows signal timings during UTOPIA receive operations.
Figure 72 shows signal timings during UTOPIA transmit operations.
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This section provides the AC 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). Furthermore, MII signals use TTL signal levels compatible with devices operating at either
5.0 or 3.3 V.
MOTOROLA
UtpClk
PHREQn
RxClav
RxEnb
UTPB
SOC
UtpClk
PHSELn
TxClav
TxEnb
UTPB
SOC
FEC Electrical Characteristics
U5
U5
HighZ at MPHY
5
HighZ at MPHY
MPC862/857T/857DSL Hardware Specifications
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 72. UTOPIA Transmit Timing
Figure 71. UTOPIA Receive Timing
Go to: www.freescale.com
U2
U2
2
2
U5
5
U3
U3
U1
3
U1
3
1
U4
U4
4
4
FEC Electrical Characteristics
U1
U1
U3
3
HighZ at MPHY
HighZ at MPHY
U4
4
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