BH-ADP-ISO-20 Blackhawk

Blackhawk 3 Pin and Signal Mappings QUICK 3.3v/5.0v START Isolation Pin Name Pin Name Pin Name Pin Name GUIDE TMS 2 TMS 2 Adapters 1 1 nTRST nTRST TDI 4 TDI 4 3 GND 3 GND This Quick Start Guide describes two (2) different Isolation TVD 6 TVD 6 5 KEY 5 KEY Adapters. Please refer to the parts of this guide that match TDO 8 TDO 8 7 GND 7 GND the type of Isolation Adapter that you have purchased and 9 RTCK 10 GND 9 RTCK 10 GND is included. TCLK 12 TCLK 12 11 GND 11 GND Installation Requirements EMU0 14 EMU0 14 13 EMU1 13 EMU1 Emulators with a standard TI 14-pin or compact TI 20-pin JTAG Socket. nSRST 16 15 GND Signals are active low TI development Board with a standard TI 14-pin or compact TI 20-pin JTAG 17 EMU2* 18 header and 3.3v or 5.0v IO voltages. EMU3* Table 1 If you do not meet the 14-14 or 20-20 pin requirements between the emulator and target Standard TI 4-pin JTAG Header 20 19 EMU4* GND board, you can use a 14e-20t or 20e-14t pin converter as needed. Signals are active low * Not Connected The following isolation adapters are described in this document. BH-ADP-ISO14 Table 2 For electrical Isolation of a target board and emulator with standard TI 14-pin JTAG con- Compact TI 20-pin JTAG Header nection. BH-ADP-ISO20 For electrical Isolation of a target board and emulator with compact TI 20-pin JTAG con- 4 Additional Information nector. The Blackhawk Isolation Adapter is compatible with all Blackhawk JTAG Emu- Features Benefits Specifications lators currently in production and with most other emulators that conform to Supports I/O voltages of 3.3v/5.0v targets the Texas Instruments 14 and 20-pin JTAG headers. Compatibility with target Works with XDS510 and XDS560-class emulators hardware which is non-standard or existed prior to 1998 should be verified to Designed using UL60950 and UL1577 standards conform to the IEEE 1149.1 specification prior to using the adapter. 1,500 Vrms galvanic isolation voltage PCB isolation clearance and creepage distance of 4mm Use of the Blackhawk Isolation Adapter does not guarantee that damage will High speed operation: Up to 30MHz TCK not occur to hardware that is subjected to extreme voltage surge. Damage to 25kV/s transient immunity devices on the scan chain may still be possible under certain circumstances Logic powered from target - JTAG pin 5 (TVD) beyond the scope of tolerances generally accepted as normal operation. Current consumption is 60-80 mA nominal (100 mA max) Digital Isolators: SI844x and ADuM1250 Blackhawk 123 Gaither Drive Important Environmental Considerations Mt. Laurel, NJ 08054-1701 www.blackhawk-dsp.com Caution is necessary to minimize ESD (Electro-static Discharge) which can +1-877-983-4514 damage electronic components. Use in a controlled environment where Blackhawk is a registered trademark of EWA Technologies, Inc. ESD materials and practices are employed is highly recommended. 4 1 BH-ISO14 20-QS-02 1 14 and 20-pin Configurations Typical Connections 2 The Isolation Adapters described below (see figures 1 to 4) allow an emu- Using this adapter provides backwards compatibility to standard debug con- lator with the standard TI 14-pin or compact 20-pin JTAG socket (EMU) to nections and does not perform any processing or contain any on-board logic. connect to a target board with the corresponding JTAG header (TGT). It is strictly a Isolation Adapter, routing only pins 1-14, or 1-20 on relative Use a pin converter if your emulator and target board do not have the adapter, and can be used with XDS510 and XDS560-class emulators same JTAG connections. with a 14-pin or 20-pin socket connector. Use of this adapter will isolate floating grounds and minimize current spikes from damaging the emulator, the target, and the development ma- Figure 5 shows the connection orientation of the Isolation Adapter between chine. an emulator cable on top and a header on a target board. SIDE VIEW Emulator Cable Emulator Figure 1 Figure 2 Connector Top view of BH-ADP-ISO14 Top view of BH-ADP-ISO20 Isolation Adapter Standard TI 14-pin Standard TI 14-pin JTAG Header JTAG Socket Connect to emulators Connect this end to target 14-pin socket connector. board with TI 14-pin header. (EMU) (TGT) (pin 6 keyed) Target Connector Figure 3 Target Board Connector edge views of the BH-ADP-ISO14 Adapter Connection Figure 5 Side view of the Isolation adapter connection orientation Compact TI 20-pin Compact TI 20-pin JTAG Header JTAG connector Connect to emulators Connect this end to target WARNING 20-pin socket connector. board with 20-pin TI header. Caution should be exercised in connecting these adapters to the JTAG emulator and (EMU) the target JTAG header. Pay special attention to the orientation and keying and pin (TGT) outs. Be careful to connect with the correct orientation. These adapters are not in- (pin 6 keyed) tended to be hot pluggable. Unplug power from all sources prior to connect or discon- nect. Figure 4 Connector edge views of the BH-ADP-ISO20 Adapter 2 3