MCIMX53XA Datasheet, PDF (78/180 Pages) Freescale Semiconductor, Inc – i.MX53xA Automotive and Infotainment Applications Processors

Electrical Characteristics
Table 52. RMII Signal Timing (continued)
No.
Characteristics¹
Min
Max
Unit
M20
FEC_RXD[1:0], CRS_DV(FEC_RX_DV), FEC_RX_ER to
4
REF_CLK setup
M21
REF_CLK to FEC_RXD[1:0], FEC_RX_DV, FEC_RX_ER
2
hold
1 _{Test conditions: 25pF on each output signal.}
— ns
— ns
REF_CLK (input)
M16
M17
M18
FEC_TXD[1:0] (output)
FEC_TX_EN
CRS_DV (input)
FEC_RXD[1:0]
FEC_RX_ER
M19
M20 M21
Figure 40. RMII Mode Signal Timing Diagram
4.7.6 Flexible Controller Area Network (FLEXCAN) AC Electrical
Specifications
The electrical characteristics are related to the CAN transceiver external to i.MX53xA such as MC33902
from Freescale.The i.MX53xA has two CAN modules available for systems design. Tx and Rx ports for
both modules are multiplexed with other I/O pins. See the IOMUXC chapter of the i.MX53 reference
manual to see which pins expose Tx and Rx pins; these ports are named TXCAN and RXCAN,
respectively.
i.MX53xA Automotive and Infotainment Applications Processors, Rev. 1
78
Freescale Semiconductor