BLACKHAWK! BH-ADP-ISO20-2 User manual

4 1
QUICK
START
GUIDE
Blackhawk™
1.8v/3.3v/5.0v
Isolation
Adapter (20-pin)
Blackhawk
123 Gaither Drive
Mt. Laurel, NJ 08054-1701
www.blackhawk-dsp.com
[phone]
Blackhawk is a registered trademark of EWA Technologies, Inc.
BH-ISO20-QS-03
3Pin and Signal Mappings
Installation Requirements
 Emulators with a compact TI 20-pin JTAG Socket.
 TI development Board with a compact TI 20-pin JTAG header and 1.8v, 3.3v or
5.0v IO voltages.
If you do not meet the 20-20 pin requirements between the emulator and target board, you
can use a 14e-20t pin converter as needed.
Important Environmental Considerations
This Quick Start Guide describes Revision 2.0 of our 20-pin
Isolation Adapter. If you have a previous revision, please
refer to the guide that matches your version. If you are not
sure what you are using, contact Blackhawk Support.
Caution is necessary to minimize ESD (Electro-static Discharge) which can
damage electronic components. Use in a controlled environment where
ESD materials and practices are employed is highly recommended.
The following isolation adapter is described in this document.
 BH-ADP-ISO20-2 (SKU: 12137B, revision 2.0)
For electrical Isolation of a target board and emulator with compact TI 20-pin JTAG con-
nection.
Features • Benefits • Specifications
 Supports I/O voltages of 1.8v/3.3v/5.0v targets
 Works with TI XDS Emulators and Debug probes, including XDS100v2, XDS110,
XDS200, XDS510, XDS560 and XDS560v2-class emulators
 5K Vrms galvanic isolation
 Withstands ±10kV Surge per IEC 61000-4-5
 PCB isolation clearance and creepage distance of 6mm
 High speed operation: Up to 20MHz TCK
 Logic powered from target - JTAG pin 5 (TVD)
 Current consumption is 60-80 mA nominal (100 mA max)
 Bi-directional EMU0 and EMU1 support
Table 1
Compact TI 20-pin JTAG Header
4Additional Information
The Blackhawk Isolation Adapter is compatible with all Blackhawk JTAG Emu-
lators currently in production and with most other emulators that conform to
the Texas Instruments compact 20-pin JTAG headers. Compatibility with tar-
get hardware which is non-standard or existed prior to 1998 should be verified
to conform to the IEEE 1149.1 specification prior to using the adapter.
Use of the Blackhawk Isolation Adapter does not guarantee that damage will
not occur to hardware that is subjected to extreme voltage surge. Damage to
devices on the scan chain may still be possible under certain circumstances
beyond the scope of tolerances generally accepted as “normal operation”.
PIN SIGNAL PIN SIGNAL
1TMS 2nTRST 1
3TDI 4TDIS 2
5TVD 6KEY 3
7TDO 8GND
9RTCK 10 GND
11 TCK 12 GND
13 EMU0 14 EMU1
15 nSRST 16 GND
17 EMU2 418 EMU3 4
19 EMU4 420 GND
1 Signal is active low
2 Target Disconnect (GND)
3 Keyed, no pin
4 Not Connected - Not Used

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120-pin Configurations Typical Connections 2
The Isolation Adapters described below (see figures 1 and 2) allow an
emulator with the compact TI 20-pin JTAG socket (EMU) to connect to a
target board with the corresponding JTAG header (TGT). Use a pin con-
verter if your emulator and target board do not have the same JTAG con-
nections.
Use of this adapter will isolate floating grounds and minimize current
spikes from damaging the emulator, the target, and the development ma-
chine.
Figure 2
Connector edge views of the BH-ADP-ISO20-2 Adapter
Figure 1
Top view of BH-ADP-ISO20-2
Using this adapter provides backwards compatibility to standard debug con-
nections and does not perform any processing or contain any on-board logic.
It is strictly a Isolation Adapter, routing JTAG signals, and can be used with
most TI XDS-class emulators with a compact TI 20-pin socket connector.
See table 1 for a list of JTAG signals.
Figure 3 shows the connection orientation of the Isolation Adapter between
an emulator cable on top and a header on a target board.
WARNING
Caution should be exercised in connecting these adapters to the JTAG emulator and
the target JTAG header. Pay special attention to the orientation and keying and pin
outs. Be careful to connect with the correct orientation. These adapters are not in-
tended to be hot pluggable. Unplug power from all sources prior to connect or discon-
nect.
Figure 3
Side view of the Isolation adapter connection orientation
Isolation Adapter
Emulator
Connector
SIDE VIEW
Emulator Cable
Target Board
Connection
Target
Connector
Compact TI 20-pin
JTAG Header
Connect to emulator’s
20-pin socket connector.
(EMULATOR Connection)
(pin 6 keyed)
(pin 6 keyed)
Compact TI 20-pin
JTAG connector
Connect this end to target
board with 20-pin TI header.
(TARGET Connection)