MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
32
Freescale Semiconductor
UCC Ethernet Controller: Three-Speed Ethernet, MII Management
Figure 12
shows the MII transmit AC timing diagram.
Figure 12. MII Transmit AC Timing Diagram
8.2.2.2
MII Receive AC Timing Specifications
Table 30
provides the MII receive AC timing specifications.
TX_CLK data clock rise time, (20% to 80%)
t
MTXR
1.0
—
4.0
ns
TX_CLK data clock fall time, (80% to 20%)
t
MTXF
1.0
—
4.0
ns
Note:
1. The symbols used for timing specifications follow the pattern of t
(first two letters of functional block)(signal)(state)(reference)(state)
for
inputs and t
(first two letters of functional block)(reference)(state)(signal)(state)
for outputs. For example, t
MTKHDX
symbolizes MII transmit
timing (MT) for the time t
MTX
clock reference (K) going high (H) until data outputs (D) are 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
MTX
represents the MII(M) transmit (TX) clock. For rise and fall times, the latter convention is
used with the appropriate letter: R (rise) or F (fall).
Table 30. MII Receive AC Timing Specifications
At recommended operating conditions with LV
DD
/OV
DD
of 3.3 V ± 10%.
Parameter/Condition
Symbol
1
Min
Typ
Max
Unit
RX_CLK clock period 10 Mbps
t
MRX
—
400
—
ns
RX_CLK clock period 100 Mbps
t
MRX
—
40
—
ns
RX_CLK duty cycle
t
MRXH
/t
MRX
35
—
65
%
RXD[3:0], RX_DV, RX_ER setup time to RX_CLK
t
MRDVKH
10.0
—
—
ns
RXD[3:0], RX_DV, RX_ER hold time to RX_CLK
t
MRDXKH
10.0
—
—
ns
RX_CLK clock rise time, (20% to 80%)
t
MRXR
1.0
—
4.0
ns
Table 29. MII Transmit AC Timing Specifications (continued)
At recommended operating conditions with LV
DD
/OV
DD
of 3.3 V ± 10%.
Parameter/Condition
Symbol
1
Min
Typ
Max
Unit
TX_CLK
TXD[3:0]
t
MTKHDX
t
MTX
t
MTXH
t
MTXR
t
MTXF
TX_EN
TX_ER