MCIMX25 Datasheet, PDF (90/154 Pages) Freescale Semiconductor, Inc – i.MX25 Applications Processor for Automotive Products

3.7.10 Controller Area Network (FlexCAN) Transceiver Parameters and
Timing
Table 67 and Table 68 show voltage requirements for the FlexCAN transceiver Tx and Rx pins.
Table 67. Tx Pin Characteristics
Parameter
High-level output voltage
Low-level output voltage
1 _{Vcc = +3.3 V ± 5%}
Symbol
VOH
VOL
Min.
2
—
Typ.
—
0.8
Max.
Vcc¹ + 0.3
—
Units
V
V
Table 68. Rx Pin Characteristics
Parameter
High-level input voltage
Low-level input voltage
1 _{Vcc = +3.3 V ± 5%}
Symbol
VIH
VIL
Min.
0.8 × Vcc¹
—
Typ.
—
0.4
Max.
Vcc¹
—
Units
V
V
Figure 60 through Figure 63 show the FlexCAN timing, including timing of the standby and shutdown
signals.
TXD
t_ONTXD
V_DIFF
V_CC/2
0.9V
t_ONRXD
V_CC/2
t_OFFTXD
0.5V
t_OFFRXD
RXD
V_CC/2
V_CC/2
Figure 60. FlexCAN Timing Diagram
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 7
90
Freescale Semiconductor