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11 System Design
11.3
EZ-ICE EMULATOR
The ADSP-2106x EZ-ICE Emulator is a development tool for
debugging programs running in real time on your ADSP-2106x target
system hardware. The EZ-ICE provides a controlled environment for
observing, debugging, and testing activities in a target system by
connecting directly to the target processor through its JTAG interface.
The emulator can monitor system behavior while running at full
speed. It lets you examine and alter memory locations as well as
processor registers and stacks.
Because the EZ-ICE controls the target system's ADSP-2106x through
the processor's IEEE 1149.1 JTAG Test Access Port, non-intrusive
in-circuit emulation is assured. The emulator does not impact target
loading or timing. The emulator's in-circuit probe connects to an IBM
PC host computer with an ISA bus plug-in board.
Target systems must have a 14-pin connector to accept the
EZ-ICE's in-circuit probe, a 14-pin plug.
11.3.1
Target Board Connector For EZ-ICE Probe
The ADSP-2106x EZ-ICE Emulator uses the IEEE 1149.1 JTAG test
access port of the ADSP-2106x to monitor and control the target board
processor during emulation. The EZ-ICE probe requires the
ADSP-2106x's CLKIN, TMS, TCK,
signals be made accessible on the target system via a 14-pin connector
(a pin strip header) such as that shown in Figure 11.3. The EZ-ICE
probe plugs directly onto this connector for chip-on-board emulation.
You must add this connector to your target board design if you intend
to use the ADSP-2106x EZ-ICE. Be sure to allow enough room in your
system to fit the EZ-ICE probe onto the 14-pin connector. The length of
the traces between the connector and the ADSP-2106x's JTAG pins
should be as short as possible.
The 14-pin, 2-row pin strip header is keyed at the pin 3 location—you
must remove pin 3 from the header. The pins must be 0.025 inch
square and at least 0.20 inch in length. Pin spacing should be 0.1 x 0.1
inches. The tip of the pins must be at least 0.10 inch higher than the
tallest component under the emulator's probe to allow clearance for
the bottom of the probe. Pin strip headers are available from vendors
such as 3M, McKenzie, and Samtec.
11 – 14
www.BDTIC.com/ADI
TRST
EMU
, TDI, TDO,
, and GND
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