mpc8378e Freescale Semiconductor, Inc, mpc8378e Datasheet - Page 32

• Manufacturer Part Number: mpc8378e
• Description: Powerquicc Ii Pro Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Figure 12
Figure 13
8.3.4
Table 33
32
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%)
presents the RGMII and RTBI AC timing specifications.
provides the AC test load for eTSEC.
shows the MII receive AC timing diagram.
Parameter/Condition
RGMII and RTBI AC Timing
RXD[3:0]
RX_CLK
RX_ER
RX_DV
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
Output
Table 33. RGMII and RTBI AC Timing Specifications
Figure 13. MII Receive AC Timing Diagram
t
t
MRXH
MRDVKH
DD
of 2.5 V ± 5%.
Figure 12. 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