mpc8536e Freescale Semiconductor, Inc, mpc8536e Datasheet - Page 51

• Manufacturer Part Number: mpc8536e
• Description: Mpc8536e Powerquicctm Iii Integrated Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

A timing diagram for TBI receive appears in
2.9.2.6
Table 35
Freescale Semiconductor
At recommended operating conditions with L/TV
.
Data to clock output skew (at transmitter)
Data to clock input skew (at receiver)
Clock period duration
Duty cycle for 1000BASE-T
Duty cycle for 10BASE-T and 100BASE-TX
Rise time (20%–80%)
Fall time (20%–80%)
Notes:
1. Note that, in general, the clock reference symbol representation for this section is based on the symbols RGT to
2. This implies that PC board design will require clocks to be routed such that an additional trace delay of greater than
3. For 10 and 100 Mbps, t
4. Duty cycle may be stretched/shrunk during speed changes or while transition to a received packet's clock domains as
represent RGMII and RTBI timing. For example, the subscript of t
also that the notation for rise (R) and fall (F) times follows the clock symbol that is being represented. For symbols
representing skews, the subscript is skew (SK) followed by the clock that is being skewed (RGT).
1.5 ns will be added to the associated clock signal.
long as the minimum duty cycle is not violated and stretching occurs for no more than three t
transitioned between.
presents the RGMII and RTBI AC timing specifications.
RX_CLK
RCG[9:0]
RGMII and RTBI AC Timing Specifications
MPC8536E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 2
Parameter/Condition
3
Figure 24. TBI Single-Clock Mode Receive AC Timing Diagram
RGT
4
t
TRRH
Table 35. RGMII and RTBI AC Timing Specifications
scales to 400 ns ± 40 ns and 40 ns ± 4 ns, respectively.
2
DD
t
TRR
Figure
of 2.5 V ± 5%.
3, 4
24.
t
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
TRRDV
valid data
t
t
t
t
Symbol
RGTH
RGTH
SKRGT_RX
SKRGT_TX
t
t
t
t
RGTR
RGTF
TRRDX
RGT
/t
/t
RGT
RGT
1
RGT
represents the TBI (T) receive (RX) clock. Note
t
TRRF
–500
Min
1.0
7.2
45
40
—
—
Typ
8.0
—
—
50
—
—
0
t
TRRR
RGT
of the lowest speed
Max
0.75
0.75
500
2.8
8.8
55
60
Unit
ps
ns
ns
ns
ns
%
%
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