mpc8560vt667jb Freescale Semiconductor, Inc, mpc8560vt667jb Datasheet - Page 27

• Manufacturer Part Number: mpc8560vt667jb
• Description: Mpc8560 Powerquicc Iii Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

7.2.2 MII AC Timing Specifications
This section describes the MII transmit and receive AC timing specifications.
7.2.2.1
Table 23
Figure 10
Freescale Semiconductor
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 and fall time
Note:
1.The symbols used for timing specifications herein follow the pattern of t
2.Signal timings are measured at 0.7 V and 1.9 V voltage levels.
3.Guaranteed by design.
(reference)(state)
symbolizes MII transmit timing (MT) for the time t
invalid (X). Note that, in 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
(TX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
provides the MII transmit AC timing specifications.
shows the MII transmit AC timing diagram.
MII Transmit AC Timing Specifications
TXD[3:0]
TX_CLK
Parameter/Condition
TX_EN
TX_ER
for inputs and t
MPC8560 Integrated Processor Hardware Specifications, Rev. 4.2
Table 23. MII Transmit AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Figure 10. MII Transmit AC Timing Diagram
t
MTXH
DD
of 3.3 V ± 5%, or LV
t
MTX
MTX
t
clock reference (K) going high (H) until data outputs (D) are
DD
MTXR
t
t
=2.5V ± 5%.
Symbol
MTXH/
MTKHDX
t
t
MTXF
MTKHDX
t
MTX
t
, t
MTX
MTXF
t
MTX
2
1
2,3
(first two letters of functional block)(signal)(state)
t
MTXR
Min
1.0
35
—
—
1
MTX
Ethernet: Three-Speed, MII Management
for outputs. For example, t
represents the MII(M) transmit
Typ
400
40
—
—
5
Max
4.0
65
15
—
—
MTKHDX
Unit
ns
ns
ns
ns
%
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