mpc8641 Freescale Semiconductor, Inc, mpc8641 Datasheet - Page 32

• Manufacturer Part Number: mpc8641
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
Timing diagrams for FIFO appear in
8.2.2
This section describes the GMII transmit and receive AC timing specifications.
8.2.2.1
Table 28
32
At recommended operating conditions with L/TV
GMII data TXD[7:0], TX_ER, TX_EN setup time
GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay
GTX_CLK data clock rise time (20%-80%)
.
provides the GMII transmit AC timing specifications.
GTX_CLK
TXD[7:0]
TX_EN
TX_ER
RX_CLK
RXD[7:0]
RX_DV
RX_ER
GMII AC Timing Specifications
GMII Transmit AC Timing Specifications
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
Parameter/Condition
t
FIRH
t
FITH
Table 28. GMII Transmit AC Timing Specifications
Figure 8. FIFO Transmit AC Timing Diagram
Figure 9. FIFO Receive AC Timing Diagram
DD
t
t
FIR
Figure 8
FIT
of 3.3 V ± 5% and 2.5 V ± 5%.
t
FIRDV
t
FITDV
and
valid data
Figure
t
FIRDX
Symbol
9.
t
t
GTKHDV
t
GTKHDX
GTXR
t
FITDX
2
1
t
FIRF
t
FITF
Min
2.5
0.5
—
t
FIRR
t
Typ
FITR
—
—
—
Freescale Semiconductor
Max
5.0
1.0
—
Unit
ns
ns
ns