MPC8379E-RDBA Freescale Semiconductor, MPC8379E-RDBA Datasheet - Page 29

BOARD REF DESIGN MPC8379E

MPC8379E-RDBA

Manufacturer Part Number
MPC8379E-RDBA
Description
BOARD REF DESIGN MPC8379E
Manufacturer
Freescale Semiconductor
Series
PowerQUICC II™ PROr
Type
MPUr
Datasheets

Specifications of MPC8379E-RDBA

Contents
Board
Memory Type
Flash, SDRAM
Interface Type
Ethernet, USB, PCI, UART
Board Size
170 mm x 170 mm
Product
Modules
Silicon Manufacturer
Freescale
Core Architecture
Power Architecture
Core Sub-architecture
PowerQUICC
Silicon Core Number
MPC83xx
Silicon Family Name
PowerQUICC II PRO
Rohs Compliant
Yes
For Use With/related Products
MPC8379E
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
At recommended operating conditions with LV
Figure 12
8.2.3.2
Table 30
Freescale Semiconductor
At recommended operating conditions with LV
Fall time REF_CLK (80%–20%)
REF_CLK to RMII data TXD[1:0], TX_EN delay
Note:
1
Input low voltage at 3.3 LV
Input high voltage at 3.3 LV
REF_CLK clock period
REF_CLK duty cycle
REF_CLK peak-to-peak jitter
Rise time REF_CLK (20%–80%)
Fall time REF_CLK (80%–20%)
The symbols used for timing specifications herein follow the pattern of t
for inputs and t
transmit timing (MT) for the time t
general, the clock reference symbol representation is based on two to three letters representing the clock of a particular
functional. For example, the subscript of t
convention is used with the appropriate letter: R (rise) or F (fall).
shows the RMII receive AC timing specifications.
shows the RMII transmit AC timing diagram.
RMII Receive AC Timing Specifications
REF_CLK
(first two letters of functional block)(reference)(state)(signal)(state)
TXD[1:0]
TX_EN
TX_ER
Parameter/Condition
Parameter
MPC8379E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4
Table 29. RMII Transmit AC Timing Specifications (continued)
DD
DD
Table 30. RMII Receive AC Timing Specifications
MTX
Figure 12. RMII Transmit AC Timing Diagram
t
RMTH
clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in
DD
DD
of 3.3 V ± 5%.
of 3.3 V ± 5%.
MTX
t
RMT
represents the MII(M) transmit (TX) clock. For rise and fall times, the latter
Symbol
t
RMTDX
t
RMTF
t
t
RMTDX
RMTF
Symbol
1
t
t
t
t
for outputs. For example, t
t
RMRH
RMRR
RMRF
RMRJ
V
RMR
V
(first two letters of functional block)(signal)(state) (reference)(state)
IH
IL
1
t
Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
RMTR
Min
1.0
2.0
15.0
Min
2.0
1.0
1.0
35
Typical
Typical
20.0
MTKHDX
50
Max
10.0
symbolizes MII
2.0
Max
25.0
250
0.8
2.0
2.0
65
Unit
Unit
ns
ns
ns
ps
ns
ns
%
V
V
29

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