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D E M O 9 S 1 2 X H Y 2 5 6
J U L Y
1 5 ,
2 0 1 0
U S E R G U I D E
Figure 7: COM_SEL Option Header
●
●
●
Connects target MCU SCI port to LIN PHY to enable LIN bus
1
●
●
●
communications
COM_SEL
●
●
●
Connects target MCU SCI port to RS-232 PHY to enable serial
1
●
●
●
communications
COM_SEL
USB Serial Link
The integrated USB-BDM provides a serial link from the target MCU to the host PC through the
a utility application. Refer to the P&E Multilink documentation for further details. This signal
path is enabled using option jumper JP11, BCOM_EN.
configuration for the JP11 option header.
Figure 8: BCOM_EN Option Header
Figure 8 below shows the
2
1
Enables serial communications through the integrated USB BDM. Remove
shunts to disable serial comm. through the USB BDM.
JP11
NOTE: These option jumpers must be removed to enable SCI communications through the
COM port.
LIN Port
The DEMO9S12XHY256 applies the MC33661 LIN bus physical layer device (PHY) to support
LIN communications. The PHY may be configured as a Master or Slave node on the LIN bus.
LIN connectors J9 & J10 are configured in parallel to support pass-thru signaling if needed.
Connector J9 is not installed in default configurations.
Figure 9: LIN Block Diagram
Figure 9 shows the LIN block diagram.
MC9S12XHY
256
RXD_B
JP6
MSTR
(partial)
MC33661
J9 / J10
JP6
LIN_PWR
(partial)
TXD_B
COM_SEL
(partial)
LIN PHY
JP8
The LIN interface provides optional features of slew rate control, network supply, and wake up
option. Refer to the MC33661 Reference Manual for detail on PHY functionality. The following
sections detail functionality for LIN option jumpers.
12
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相关PDF资料
DEMOACKIT KIT DEMO KIT FOR DC9S08A
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DEMOQE128 DEMO BOARD FOR QE128 FLEXIS
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