mpc8313e Freescale Semiconductor, Inc, mpc8313e Datasheet - Page 27

• Manufacturer Part Number: mpc8313e
• Description: Mpc8313e Powerquicc Ii Pro Processor
• Manufacturer: Freescale Semiconductor, Inc

8.2.1.3
This section describes the RMII transmit and receive AC timing specifications.
Table 26
Figure 10
8.2.1.4
Table 27
Freescale Semiconductor
At recommended operating conditions with NV
At recommended operating conditions with NV
REF_CLK clock
REF_CLK duty cycle
REF_CLK to RMII data TXD[1:0], TX_EN delay
REF_CLK data clock rise V
REF_CLK data clock fall V
Note:
1. The symbols used for timing specifications herein follow the pattern of t
REF_CLK clock period
REF_CLK duty cycle
RXD[1:0], CRS_DV, RX_ER setup time to REF_CLK
RXD[1:0], CRS_DV, RX_ER hold time to REF_CLK
(reference)(state)
symbolizes RMII transmit timing (RMT) for the time t
(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
times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
provides the RMII transmit AC timing specifications.
provides the RMII receive AC timing specifications.
shows the RMII transmit AC timing diagram.
RMII Transmit AC Timing Specifications
RMII Receive AC Timing Specifications
for inputs and t
Parameter/Condition
REF_CLK
Parameter/Condition
TXD[1:0]
TX_EN
MPC8313E PowerQUICC
IH
IL
(max) to V
(min) to V
(first two letters of functional block)(reference)(state)(signal)(state)
Table 26. RMII Transmit AC Timing Specifications
Table 27. RMII Receive AC Timing Specifications
Figure 10. RMII Transmit AC Timing Diagram
IH
t
IL
RMXH
(min)
(max)
DD
DD
of 3.3 V ± 10%.
of 3.3 V ± 10%.
t
RMX
™
II Pro Processor Hardware Specifications, Rev. 0
RMX
RMX
clock reference (K) going high (H) until data outputs (D) are invalid
t
t
Symbol
RMXH/
t
Symbol
RMXH
t
t
RMTKHDX
represents the RMII(RM) reference (X) clock. For rise and fall
RMRDXKH
RMRDVKH
t
RMTKHDX
t
t
RMXR
t
t
RMXF
t
RMXF
RMX
RMX
/t
t
RMX
RMX
1
1
(first three letters of functional block)(signal)(state)
t
RMXR
Ethernet: Three-Speed Ethernet, MII Management
Min
Min
1.0
1.0
4.0
2.0
35
—
35
—
2
for outputs. For example, t
Typical
Typical
20
20
—
—
—
—
—
—
-
Max
Max
4.0
4.0
65
65
10
—
—
—
—
RMTKHDX
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
%
%
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