mpc8536e Freescale Semiconductor, Inc, mpc8536e Datasheet - Page 46

• Manufacturer Part Number: mpc8536e
• Description: Mpc8536e Powerquicctm Iii Integrated Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
Figure 18
2.9.2.3
This section describes the MII transmit and receive AC timing specifications.
2.9.2.3.1
Table 30
46
At recommended operating conditions with L/TV
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%)
Note:
1. The symbols used for timing specifications herein follow the pattern of t
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)
MPC8536E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 2
RXD[7:0]
RX_CLK
Parameter/Condition
RX_DV
RX_ER
Table 30. MII Transmit AC Timing Specifications
MTX
Figure 18. GMII Receive AC Timing Diagram
t
t
GRXH
GRDVKH
clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in
DD
MTX
of 3.3 V ± 5%.
t
GRX
represents the MII(M) transmit (TX) clock. For rise and fall times, the latter
t
Symbol
MTXH/
t
t
GRXF
MTKHDX
t
t
t
t
MTXR
MTXF
MTX
MTX
t
GRDXKH
t
MTX
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
%