MPC8572CLPXARLD FREESCALE [Freescale Semiconductor, Inc], MPC8572CLPXARLD Datasheet - Page 34

• Manufacturer Part Number: MPC8572CLPXARLD
• Description: MPC8572E PowerQUICC III Integrated Processor Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Figure 11
8.2.3
This section describes the MII transmit and receive AC timing specifications.
8.2.3.1
Table 28
34
At recommended operating conditions with LV
TX_CLK clock period 10 Mbps
TX_CLK clock period 100 Mbps
TX_CLK duty cycle
TX_CLK to MII data TXD[3:0], TX_ER, TX_EN delay
TX_CLK data clock rise (20%-80%)
TX_CLK data clock fall (80%-20%)
Notes:
1. The symbols used for timing specifications herein follow the pattern of t
2. Guaranteed by design.
for inputs and t
transmit timing (MT) for the time t
general, the clock reference symbol representation is based on two to three letters representing the clock of a particular
functional. For example, the subscript of t
convention is used with the appropriate letter: R (rise) or F (fall).
provides the MII transmit AC timing specifications.
shows the GMII receive AC timing diagram.
MII AC Timing Specifications
MII Transmit AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
RXD[7:0]
RX_CLK
Parameter/Condition
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4
RX_ER
RX_DV
Table 28. MII Transmit AC Timing Specifications
MTX
Figure 11. GMII Receive AC Timing Diagram
t
t
GRXH
GRDVKH
DD
clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in
/TV
MTX
DD
t
GRX
of 2.5/ 3.3 V ± 5%.
represents the MII(M) transmit (TX) clock. For rise and fall times, the latter
t
Symbol
MTXH/
t
t
GRXF
MTKHDX
t
t
t
MTXR
MTXF
t
MTX
MTX
t
GRDXKH
t
MTX
2
2
2
for outputs. For example, t
(first two letters of functional block)(signal)(state) (reference)(state)
1
t
GRXR
Min
1.0
1.0
35
—
—
1
Typ
400
40
—
—
—
5
MTKHDX
Freescale Semiconductor
symbolizes MII
Max
4.0
4.0
65
15
—
—
Unit
ns
ns
ns
ns
ns
%