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Intel
®
IQ31244 Customer Reference Board
28 User’s Manual
6.5 JTAG Emulator Support
The IQ31244 provides a JTAG debugger interface at J5. This interface is compatible with the
Wind River* visionPROBE*. The JTAG emulator interface connects primarily through the JTAG
port of the Intel
®
80321 I/O Processor and can assert a reset to the 80321. The JTAG emulator
header definition (20-pin standard ARM* connector) is shown in Table 20.
6.6 Hex Display
There are two seven-segment Hex LED displays (CR5). The two digits (MSB and LSB) utilize the
peripheral bus, as shown in Figure 5, “Peripheral Bus Interface Unit” on page 26.
6.7 LEDs
The power-on LED can be plugged into J37 with pin 1 as the cathode and pin 3 as the anode.
Table 20. JTAG Emulator Pin Assignment
Signal Pin Pin Signal
VTref 1 2 Vsupply
TRST# 3 4 GND
TDI 5 6 GND
TMS 7 8 GND
TCK 9 10 GND
GND 11 12 GND
TDO 13 14 GND
SRST# 15 16 GND
NC 17 18 GND
NC 19 20 GND