MPC8378E-MDS-PB Freescale Semiconductor, MPC8378E-MDS-PB Datasheet - Page 32

• Manufacturer Part Number: MPC8378E-MDS-PB
• Description: BOARD PROCESSOR FOR MDS S
• Manufacturer: Freescale Semiconductor
• Type: MPUr

Specifications of MPC8378E-MDS-PB

• Contents: Board
• For Use With/related Products: MPC8378
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Figure 12
Figure 13
8.3.4
Table 33
32
At recommended operating conditions with LV
At recommended operating conditions with LV
RX_CLK clock rise time (20%–80%)
RX_CLK clock fall time (80%–20%)
1. The symbols used for timing specifications herein follow the pattern of t
Data to clock output skew (at transmitter)
Data to clock input skew (at receiver)
Clock period
for inputs and t
receive timing (MR) with respect to the time data input signals (D) reach the valid state (V) relative to the t
(K) going to the high (H) state or setup time. Also, t
input signals (D) went invalid (X) relative to the t
general, the clock reference symbol representation is based on three letters representing the clock of a particular functional.
For example, the subscript of t
used with the appropriate letter: R (rise) or F (fall).
presents the RGMII and RTBI AC timing specifications.
provides the AC test load for eTSEC.
shows the MII receive AC timing diagram.
RGMII and RTBI AC Timing
(first two letters of functional block)(reference)(state)(signal)(state)
Parameter
RXD[3:0]
RX_CLK
RX_ER
RX_DV
Parameter
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4
Output
Table 32. MII Receive AC Timing Specifications (continued)
Table 33. RGMII and RTBI AC Timing Specifications
MRX
represents the MII (M) receive (RX) clock. For rise and fall times, the latter convention is
Figure 13. MII Receive AC Timing Diagram
t
t
MRXH
MRDVKH
DD
DD
of 3.3 V ± 5%.
of 2.5 V ± 5%.
Figure 12. eTSEC AC Test Load
t
MRX
Z
0
MRX
= 50 Ω
Symbol
MRDXKL
t
t
SKRGT
SKRGT
clock reference (K) going to the low (L) state or hold time. Note that, in
t
RGT
Valid Data
Symbol
t
t
MRXR
Specifications
MRXF
1
symbolizes MII receive timing (GR) with respect to the time data
t
MRXF
1
–600
Min
for outputs. For example, t
1.0
7.2
(first two letters of functional block)(signal)(state) (reference)(state)
R
t
Min
MRDXKL
1.0
1.0
t
L
MRXR
= 50 Ω
Typical
8.0
—
0
Typical
LVDD/2
—
—
MRDVKH
Max
600
2.8
8.8
Freescale Semiconductor
Max
4.0
4.0
symbolizes MII
MRX
Unit
clock reference
ps
ns
ns
Notes
Unit
ns
ns
—
2
3