M 5 2 2 2 1 D E M O U S E R G U I D E
J A N U A R Y 1 8 , 2 0 0 7
6
•
Type B USB connector
•
DB9
Serial
Connector
•
2.0mm Barrel Power Input
•
2pos, screw type, terminal block
•
Supplied with DB9 Serial Cable, USB cable, Ethernet Cable, Support CD, and CodeWarrior Development
Studio CD
Specifications:
Board Size 3.0” x 4.0”
Power Input: +5 to +16 VDC, 9VDC typical
REFERENCES
Reference documents are provided on the support CD in Acrobat Reader format.
M52221DEMO_UG.pdf
M52221DEMO User Guide (this document)
M52221DEMO_SCH_C.pdf
M52221DEMO Schematic, Rev C
M52221DEMO_Silk_C.pdf
M52221DEMO Top Silkscreen, Rev C
M52221DEMO_Assy_C.pdf
M52221DEMO Default Shunt Placement
CFPRM.pdf
ColdFire Programmers Reference Manual
USB_20_05122006.zip
USB2.0 Specification and OTG Supplement
with errata
OVERVIEW
The target MCU features an on-board USB On-the-Go (OTG) physical layer (Phy). The OTG
Phy may be configured for either Host or Peripheral mode depending on the target application.
The OTG protocol also allows mode switching under software control. Access to the OTG Phy
is gained through the mini-AB (MAB) connector at J2. The OTG connection may be configured
as either a standard USB bus connection or an OTG USB bus connection.
The MAB USB port connector at J2 should not be confused with the integrated USB BDM cir-
cuit. These are 2 separate circuits and do not interact in any way. The USB port provides ac-
cess to the OTG Phy on the target MCU. The USB BDM allows the user to communicate with
the target MCU using either CodeWarrior or P&E Microcomputer Systems debugger tools and
a USB2.0 cable. This distinction must be understood and comprehended while reading this
document.
The M52221DEMO board utilizes 2 separate voltage rails. The regulator at VR1 energizes the
+3.3V rail for use by the target MCU and on-board logic. The regulator at VR2 energizes the
+5Vrail for use by the OTG USB port. A charge-pump at U6 energizes the OTG USB rail when
the board is powered from the USB BDM.