mpc8378 Freescale Semiconductor, Inc, mpc8378 Datasheet - Page 26

• Manufacturer Part Number: mpc8378
• Description: Powerquicc Ii Pro Processor
• Manufacturer: Freescale Semiconductor, Inc

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Figure 8
Figure 9
8.2.2
Table 28
26
At recommended operating conditions with LV
Data to clock output skew (at transmitter)
Data to clock input skew (at receiver)
Clock period
Duty cycle for 1000Base-T
Duty cycle for 10BASE-T and 100BASE-TX
Rise time (20%–80%)
Fall time (20%–80%)
provides the AC test load for eTSEC.
shows the MII receive AC timing diagram.
presents the RGMII and RTBI AC timing specifications.
Parameter/Condition
RGMII and RTBI AC Timing
RXD[3:0]
RX_CLK
RX_ER
RX_DV
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
Output
Table 28. RGMII and RTBI AC Timing Specifications
t
Figure 9. MII Receive AC Timing Diagram
t
MRXH
MRDVKH
DD
of 2.5 V ± 5%.
Figure 8. eTSEC AC Test Load
t
MRX
Z
0
= 50 Ω
t
t
RGTH
RGTH
Symbol
t
t
t
SKRGT
SKRGT
t
RGTR
t
RGTF
RGT
Valid Data
/t
/t
RGT
RGT
Specifications
1
t
MRXF
–600
Min
1.0
7.2
45
40
—
—
R
t
MRDXKL
t
L
MRXR
= 50 Ω
Typical
8.0
50
50
—
—
—
0
LVDD/2
Max
0.75
0.75
600
2.8
8.8
55
60
Freescale Semiconductor
Unit
ps
ns
ns
ns
ns
%
%
Notes
3, 4
—
—
—
2
3
4