User's Manual

System Overview and Functional Descriptions
1322x-USB Reference Manual, Rev. 1.1
3-6 Freescale Semiconductor
5. Disconnect the USB board from USB port.
6. Remove the jumpers from both J3 and J4.
7. The board is now ready for boot operation. After the FLASH is erased, plug the module into the
USB connection again. The board is now ready to be loaded with a new image using the Freescale
Test Tool application.
NOTE
Refer to the Freescale Test Tool User’s Guide as supplied with Test Tool in
the BeeKit Wireless Connectivity Toolkit download.
Figure 3-8. FLASH Erase Headers
3.9 Optional Debug/Development Interface (ARM JTAG Interface)
The module optionally supports the standard JTAG debug port. A 20-pin footprint is provided for a
standard JTAG debug interface connector. This debug port only requires a simple interface cable to
connect to a PC and use standard ARM software development tools.
The MC1322x supports connection to a subset of the defined ARM JTAG connector. The JTAG interface
is a standard 2.54mm/0.1inch spacing, 20-pin debug interface (J1). The footprint for the 20-pin connector
is located at the rear side of the module. A Pin 1 marking is given for correct plug-in of the development
cable.
Table 3-2 shows the device pins that are connected to the associated JTAG header pin outs if the JTAG
connector is used.
NOTE
The required header is a 20-position, 0.100” straight SMD connector.
Molex/Waldom #15-91-0200 or equivalent.
1
2
J3
HDR_1X2
Not Mounted
1
2
J4
HDR_1X2
Not Mounted
1-2 ADC2_VREFH -> "0"
1-2 ADC2_VREFL -> "1"
Recovery Mode
R104
10K
R103
10K
VCC
VCC
ADC2_VREFH
ADC2_VREFL