User's Manual

1323x Remote Extender Motherboard
1323x Development Hardware Reference Manual, Rev. 1.0
5-4 Freescale Semiconductor
5.2 Functional Description
The 1323x-REM is a simple host motherboard for the 1323x-MRB. The two-board combination provides
a simple evaluation and development platform for the MC13233. Figure 5-2 shows a simple block
diagram. The 2-layer board provides a flexible power supply, eight pushbutton matrix, four indicator
LEDs, IR receiver, and a USB <> UART serial port.
As the board name implies this platform is useful to develop the host side (such as a DTV or entertainment
console) of an RF remote control application. The MC13233 provides the RF node and an IR receiver is
available to support legacy IR protocol remotes. Connection to a host is available through the USB port or
any of the other generic MC13233 communications ports.
The 1323x-REM is also recommended for target development of applications where there is little
periphery circuitry. There are switches and indicator LEDs onboard for user interface, and if necessary,
custom circuitry can be connected via the two pin headers that allow access to the MC13233 GPIO.
In the following sections, refer to:
• Figure 5-1 for location of connectors and features
• Figure 5-2 for the functional blocks
• Figure 5-8 and Figure 5-9 for the board schematic
UL Product is approved accordingly to the IEC
60950-1 and EN 60950-1, First Edition
standards
Environment
RoHS Product complies with the EU Directive
2002/95/EC of 27 January 2003
WEEE Product complies with the EU Directive
2002/95/EC of 27 January 2003
Table 5-1. 1323x-REM Specifications (continued)
Parameter Units Notes/Conditions