MPC8358 FREESCALE [Freescale Semiconductor, Inc], MPC8358 Datasheet - Page 31

• Manufacturer Part Number: MPC8358
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

8.2.3.2
Table 31
Figure 14
Figure 15
Freescale Semiconductor
At recommended operating conditions with LV
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
REF_CLK clock rise time, VIL(min) to VIH(max)
REF_CLK clock fall time, VIH(max) to VIL(min)
Note:
1. The symbols used for timing specifications herein follow the pattern of t
(reference)(state)
t
(V) relative to the t
receive timing (RMR) with respect to the time data input signals (D) went invalid (X) relative to the t
reference (K) going to the low (L) state or hold time. Note that, in general, the clock reference symbol representation
is based on three letters representing the clock of a particular functional. For example, the subscript of t
represents the RMII (RM) reference (X) clock. For rise and fall times, the latter convention is used with the
appropriate letter: R (rise) or F (fall).
RMRDVKH
MPC8358E PowerQUICC™ II Pro Processor Revision 2.1 PBGA Silicon Hardware Specifications, Rev. 1
provides the RMII receive AC timing specifications.
provides the AC test load.
shows the RMII receive AC timing diagram.
RMII Receive AC Timing Specifications
symbolizes RMII receive timing (RMR) with respect to the time data input signals (D) reach the valid state
REF_CLK
RXD[1:0]
CRS_DV
RX_ER
Parameter/Condition
for inputs and t
RMX
Output
clock reference (K) going to the high (H) state or setup time. Also, t
Table 31. RMII Receive AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Figure 15. RMII Receive AC Timing Diagram
t
RMRDVKH
t
RMXH
DD
/ OV
t
RMX
DD
Z
Figure 14. AC Test Load
0
of 3.3 V ± 10%.
= 50 Ω
Valid Data
t
RMXH
t
t
Symbol
UCC Ethernet Controller: Three-Speed Ethernet, MII Management
RMRDVKH
RMRDXKH
t
RMXF
t
t
t
RMXR
RMXF
RMX
/t
RMX
1
R
t
RMRDXKH
(first three letters of functional block)(signal)(state)
L
t
RMXR
= 50 Ω
Min
4.0
2.0
1.0
1.0
35
—
for outputs. For example,
LV
Typ
20
—
—
—
—
—
DD
RMRDXKL
/2
Max
4.0
4.0
—
65
—
—
symbolizes RMII
RMX
clock
RMX
Unit
ns
ns
ns
ns
ns
%
31