DSP56F803EVM Freescale Semiconductor, DSP56F803EVM Datasheet - Page 34

• Manufacturer Part Number: DSP56F803EVM
• Description: KIT EVALUATION FOR DSP56F803
• Manufacturer: Freescale Semiconductor

Specifications of DSP56F803EVM

• Processor To Be Evaluated: 56F803
• Data Bus Width: 16 bit
• Interface Type: RS-232, JTAG
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.18 CAN Interface
The 56F803EVM board contains a CAN physical-layer interface chip that is attached to the
MSCAN_RX and MSCAN_TX pins on the 56F803. The EVM board uses a Philips,
PCA82C250, high speed, 1Mbps, physical layer interface chip. Due to the +5.0V operating
voltage of the CAN chip, a pull-up to +5.0V is required to level shift the Transmit Data output
line from the 56F803. A primary, J3, and a daisy-chain, J13, CAN connector are provided to
allow easy daisy-chaining of CAN devices. Refer to
Table 2-8
2-18
56F803
MSCAN_TX
MSCAN_RX
for the CAN signals.
1
4
8
Figure 2-14. CAN Interface
DSP56F803EVM User Manual, Rev. 5
TXD
RXD
SLOPE
PCA82C250T
U15
CANH
VREF
CANL
GND
VCC
3
5
7
6
2
+5.0V
Figure 2-14
120
for a connection diagram and to
CAN CONNECTOR
X
X
X
X
X
X
CAN CONNECTOR
CAN TERMINATION
DAISY-CHAIN
J3
1
3
5
7
9
J13
1
3
5
7
9
JG10
2
1
10
10
Freescale Semiconductor
2
4
6
8
2
4
6
8
X
X
X
X
X
X
X
X