User's Manual

1323x Remote Extender Motherboard
1323x Development Hardware Reference Manual, Rev. 1.0
5-10 Freescale Semiconductor
5.2.4 USB Interface
For many applications or demonstrations it is desirable to connect the 1323x-REM to a PC or other device.
A USB port is provided with a USB “B” receptacle plug. The port is connected to a FTDI FT232RQ USB
<> UART device that appears as a Virtual COM port (VCP) to the PC. PC drivers are available with the
module.
The USB interface is configured as a "Bus Powered" device and can draw all required power from the USB
interface. The device is USB 2.0 full speed compatible.
The USB connector is designated as J15. Figure 5-6 shows the connector pinout.
Figure 5-6. USB Connector Pinout
5.2.5 IR Receiver
The 1323x-REM provides an IR receiver that accepts IR signals from the RCM or from any IR based
remote control devices.
• The IR receiver is the TSOP85238TR device (Q3)
• 38 kHz carrier frequency
• +/- 50 Degree angle of half tranmission distance
• Drives the PTD3/TPM3 signal.
Figure 5-7 shows the IR receiver schematic.
1
2
3
4
S1
S2
1
2 34
+D
-D
G
V
J15
USB_TY PE_B
DATA_P
DATA_M
V_BUS