CMD-12DP512 AXIOM, CMD-12DP512 Datasheet - Page 11

• Manufacturer Part Number: CMD-12DP512
• Description: Single Board Computer
• Manufacturer: AXIOM

Specifications of CMD-12DP512

• Silicon Manufacturer: Freescale
• Core Architecture: HCS12
• Core Sub-architecture: S12D
• Features: Onboard Back Ground Debug, Breadboard And Prototype Area
• Kit Contents: Board
• Silicon Family Name: S12D
• Silicon Core Number: MC9S12DP512

C M D - 1 2 D P 5 1 2
COMMUNICATION Ports
The CMD-12DP512 provides 4 communication ports with interfaces. The ports provided are
the P_COM1 (SCI0) serial port, P_COM2 (SCI1) serial port, CAN (MSCAN0) serial port, and
the USB port for BDM application.
USB_B Port (BDM)
The USB_B port is dedicated to interface with a host PC operating the AxIDE4 software.
When this port is applied the BDM_ON options should be installed to allow interface to the
HCS12. This port and the BDM Port should not be applied at the same time.
BDM_PORT
The BDM Port is a standard development cable connection provided for other types of BDM /
debug cable interfaces if wanted. The host PC must be operating the necessary software to
control the cable type connected. When this port is applied the BDM_ON options should be
Open or idle to allow interface to the HCS12 by this port. This port and the USB Port should
not be applied at the same time.
The BDM port is a 6 pin header compatible with the Freescale Background Debug Mode
(BDM) Pod.
The on-board USB BDM must be disabled by BDM_ON option OPEN to apply this port.
P_COM1
JP1 will isolate the SCI0 pins from the transceiver.
The 1,4,6,7,8, and 9 pins provide RS232 flow control and status. These are connected on the
on the bottom of the development board to provide NULL status to the host. User may isolate
pins and provide flow control or status connection to the host by applying HCS12 I/O signals
and RS232 level conversion.
BGND 1 2 GND
RXD0 3 7 8
TXD0 2 6 7
GND 5 9 X
1 1
4 4 8 9
x 3 4 /RESET
x 5 6 +5V
6
R E V
Female DB9 type connector that interfaces to the HCS12
internal SCI0 serial port via the U11 RS232 transceiver. It uses
a simple 2 wire asynchronous serial interface and is translated
to RS232 signaling levels.
1,4,6 connected and 7,8 connected
B .
See the HC12 Technical Reference Manual for complete
documentation of the BDM.
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