MCIMX53-START Freescale Semiconductor, MCIMX53-START Datasheet - Page 75
![KIT DEVELOPMENT I.MX53](/photos/39/51/395134/4751369_sml.jpg)
MCIMX53-START
Manufacturer Part Number
MCIMX53-START
Description
KIT DEVELOPMENT I.MX53
Manufacturer
Freescale Semiconductor
Series
i.MX53r
Type
MCUr
Datasheets
1.MCIMX53-START.pdf
(2 pages)
2.MCIMX53-START.pdf
(180 pages)
3.MCIMX53-START.pdf
(204 pages)
Specifications of MCIMX53-START
Contents
Board
Silicon Manufacturer
Freescale
Core Architecture
ARM
Core Sub-architecture
Cortex - A8
Silicon Core Number
I.MX5
Silicon Family Name
I.MX53
Peak Reflow Compatible (260 C)
Yes
Rohs Compliant
Yes
Leaded Process Compatible
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
i.MX53
Lead Free Status / Rohs Status
Supplier Unconfirmed
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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4.7.5.2
The MII transmit signal timing affects the FEC_TXD[3:0], FEC_TX_EN, FEC_TX_ER, and
FEC_TX_CLK signals. The transmitter functions correctly up to a FEC_TX_CLK maximum frequency
of 25 MHz + 1%. There is no minimum frequency requirement. In addition, the processor clock frequency
must exceed twice the FEC_TX_CLK frequency.
Table 49
diagram for the values listed in
Freescale Semiconductor
1
2
FEC_TX_EN, FEC_TX_CLK, and FEC_TXD0 have the same timing in 10 Mbps 7-wire interface mode.
Test conditions: 25pF on each output signal.
Num
M5
M6
M7
M8
FEC_RXD[3:0] (inputs)
FEC_RX_CLK (input)
lists MII transmit channel timing parameters.
FEC_TX_CLK to FEC_TXD[3:0], FEC_TX_EN, FEC_TX_ER invalid
FEC_TX_CLK to FEC_TXD[3:0], FEC_TX_EN, FEC_TX_ER valid
FEC_TX_CLK pulse width high
FEC_TX_CLK pulse width low
MII Transmit Signal Timing
FEC_RX_ER
FEC_RX_DV
i.MX53xD Applications Processors for Consumer Products, Rev. 1
Figure 36. MII Receive Signal Timing Diagram
Characteristic
Table
Table 49. MII Transmit Signal Timing
49.
M1
1 2
M2
M3
Figure 37
shows MII transmit signal timing
35%
35%
Min
—
M4
5
Max
65%
65%
—
20
Electrical Characteristics
FEC_TX_CLK period
FEC_TX_CLK period
Unit
ns
ns
75
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