3
Pin and Signal Mappings
Pin
1
3
5
7
9
11
13
†
Name
TMS
TDI
TVD
TDO
RTCK
TCLK
EMU0
Pin
2
4
6
8
10
12
14
Name
nTRST
GND
KEY
GND
GND
GND
EMU1
†
Pin
1
3
5
7
9
11
13
15
17
19
†
Name
TMS
TDI
TVD
TDO
RTCK
TCLK
EMU0
nSRST
EMU2*
EMU4*
Pin
2
4
6
8
10
12
14
16
18
20
Name
nTRST
GND
KEY
GND
GND
GND
EMU1
GND
EMU3*
GND
†
QUICK
START
GUIDE
Blackhawk™
3.3v/5.0v
Isolation
Adapters
This Quick Start Guide describes two (2) different Isolation
Adapters. Please refer to the parts of this guide that match
the type of Isolation Adapter that you have purchased and
is included.
Installation Requirements
•
•
Emulators with a standard TI 14-pin or compact TI 20-pin JTAG Socket.
TI development Board with a standard TI 14-pin or compact TI 20-pin JTAG
header and 3.3v or 5.0v IO voltages.
If you do not meet the 14-14 or 20-20 pin requirements between the emulator and target
board, you can use a 14e-20t or 20e-14t pin converter as needed.
Signals are active low
Table 1
Standard TI 4-pin JTAG Header
Signals are active low
*
Not Connected
The following isolation adapters are described in this document.
•
•
BH-ADP-ISO14
For electrical Isolation of a target board and emulator with standard TI 14-pin JTAG con-
nection.
BH-ADP-ISO20
For electrical Isolation of a target board and emulator with compact TI 20-pin JTAG con-
nector.
Table 2
Compact TI 20-pin JTAG Header
4
Additional 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 14 and 20-pin JTAG headers. Compatibility with target
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”.
Features • Benefits • Specifications
•
Supports I/O voltages of 3.3v/5.0v targets
•
Works with XDS510 and XDS560-class emulators
•
Designed using UL60950 and UL1577 standards
•
1,500 Vrms galvanic isolation voltage
•
PCB isolation clearance and creepage distance of 4mm
•
High speed operation: Up to 30MHz TCK
•
25kV/µs transient immunity
•
Logic powered from target - JTAG pin 5 (TVD)
•
Current consumption is 60-80 mA nominal (100 mA max)
•
Digital Isolators: SI844x and ADuM1250
Important Environmental Considerations
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.
Blackhawk
123 Gaither Drive
Mt. Laurel, NJ 08054-1701
www.blackhawk-dsp.com
+1-877-983-4514
4
Blackhawk is a registered trademark of EWA Technologies, Inc.
BH-ISO14_20-QS-02
1
1
14 and 20-pin Configurations
The Isolation Adapters described below (see figures 1 to 4) allow an emu-
lator with the standard TI 14-pin or compact 20-pin JTAG socket (EMU) to
connect to a target board with the corresponding JTAG header (TGT).
Use a pin converter if your emulator and target board do not have the
same JTAG connections.
Use of this adapter will isolate floating grounds and minimize current
spikes from damaging the emulator, the target, and the development ma-
chine.
Typical Connections
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 only pins 1-14, or 1-20 on relative
adapter, and can be used with XDS510™ and XDS560™-class emulators
with a 14-pin or 20-pin socket connector.
Figure 5 shows the connection orientation of the Isolation Adapter between
an emulator cable on top and a header on a target board.
SIDE VIEW
Emulator Cable
Figure 1
Top view of BH-ADP-ISO14
Figure 2
Top view of BH-ADP-ISO20
Emulator
Connector
Isolation Adapter
Standard TI 14-pin
JTAG Header
Connect to emulator’s
14-pin socket connector.
Standard TI 14-pin
JTAG Socket
Connect this end to target
board with TI 14-pin header.
(EMU)
(TGT)
(pin 6 keyed)
Figure 3
Connector edge views of the BH-ADP-ISO14 Adapter
Target
Connector
Target Board
Connection
Compact TI 20-pin
JTAG Header
Connect to emulator’s
20-pin socket connector.
Compact TI 20-pin
JTAG connector
Connect this end to target
board with 20-pin TI header.
Figure 5
Side view of the Isolation adapter connection orientation
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.
(EMU)
(TGT)
(pin 6 keyed)
Figure 4
Connector edge views of the BH-ADP-ISO20 Adapter
2
3
嵌入式系统
