CPU_45B-V1
CPU Board XMC4500 SDRAM
Hardware Description
Board User's Manual
9
Revision 1.0, 2013-02-20
2
Hardware Description
The following sections give a detailed description of the hardware and how it can be used.
Figure 2
CPU Board XMC4500 SDRAM (CPU_45B-V1)
2.1
Power Supply
The CPU_45B-V1 board can be powered via either of the USB plugs (5 V); however, there is a current limit that
can be drawn from the host PC through USB. If the CPU_45B-V1 board is used to drive other satellite cards
(e.g. AUT_ISO-V1 or MOT_GPDLV-V2) and the total current required exceeds 500 mA, then the board needs to
be powered by a satellite card, which supports external power supply like e.g. AUT_ISO-V1, MOT_GPDLV-V2,
COM_ETH-V1.
The typical current drawn by the CPU board without any satellite cards connected is about 220 mA (@5V).
For powering the board through an USB interface, connect the USB cable provided with the kit to either of the
Micro-USB connector on board as shown in Figure 3.
Board_Interfaces.emf
Debug
Connectors
Boot
Option
Switch
COM
Satellite
ConnEctor
qSPI
Flash
USB OTG
Connector
Debug USB
Connector
ACT
Satellite
Connector
Power
indicating
LEDs
Reset
Circuit
Battery
Holder
HMI Satellite
Connector
Potentiometer
User LEDs
and User
Buttons
On-board
Debugger
SDRAM
Debug
Connectors