mpc8560vt667jb Freescale Semiconductor, Inc, mpc8560vt667jb Datasheet - Page 28

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

Ethernet: Three-Speed, MII Management
7.2.2.2
Table 24
Figure 11
28
At recommended operating conditions with LV
RX_CLK clock period 10 Mbps
RX_CLK clock period 100 Mbps
RX_CLK duty cycle
RXD[3:0], RX_DV, RX_ER setup time to RX_CLK
RXD[3:0], RX_DV, RX_ER hold time to RX_CLK
RX_CLK 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 receive timing (MR) with respect to the time data input signals (D) reach the valid state (V) relative to
the t
(GR) with respect to the time data input signals (D) went invalid (X) relative to the t
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
(RX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
provides the MII receive AC timing specifications.
shows the MII receive AC timing diagram.
MRX
MII Receive AC Timing Specifications
clock reference (K) going to the high (H) state or setup time. Also, t
RXD[3:0]
RX_CLK
Parameter/Condition
RX_DV
RX_ER
for inputs and t
MPC8560 Integrated Processor Hardware Specifications, Rev. 4.2
Table 24. MII Receive AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Figure 11. MII Receive AC Timing Diagram
t
t
MRXH
MRDVKH
DD
of 3.3 V ± 5%, or LV
t
MRX
Valid Data
t
MRXR
DD
t
=2.5V ± 5%.
Symbol
MRXH
t
t
t
MRXF
MRDXKH
MRDVKH
t
MRX
t
, t
MRX
MRXF
/t
MRX
3
1
2,3
(first two letters of functional block)(signal)(state)
t
MRDXKH
t
MRXR
10.0
10.0
Min
1.0
35
—
—
MRDXKL
MRX
for outputs. For example, t
MRX
represents the MII (M) receive
symbolizes MII receive timing
Typ
400
40
—
—
—
—
clock reference (K) going to
Freescale Semiconductor
Max
4.0
65
—
—
—
—
MRDVKH
Unit
ns
ns
ns
ns
ns
%