J T A G

P R OB E S

F OR

S I GN U M

E M ULATO RS

T E CHNI CA L

S P E C IF IC A TION S

11

Isolation Probe for TI-14 JTAG with an Optional

External Power Input

ADA-ISO-TI14-E

The isolation probe for TI-14 JTAG with an auxiliary power input ADA-ISO-TI14-E should be used in

applications where the target board does not have enough current (about 150mA) to supply the isolation probe.

When used with external power adapter, this probe reduces the current taken from the target board to

approximately 1 mA.

The ADA-ISO-TI14-E probe requires a 5.0V VDC external power source to be connected to the J1 socket.

The polarity for the J1 socket is center pin positive (+), outer collar negative (−). Reversed polarity may damage

some electronic devices. If the external power supply is not connected, the isolation probe will automatically

take power (about 150mA) from the target board. The auxiliary power adapter is not included with the isolation

probe.

See also the specification of the ADA-ISO.

1

3

5

7

9

11

13

2

4

6

8

10

12

14

TMS

TDI

PD

TDO

TCK_RET

TCK

EMU0

nTRST

GND

KEY

GND

GND

GND

EMU1

FIGURE 25 The ADA-ISO-TI14-E isolation

probe with an auxiliary power input.

FIGURE 26 The TI14 pinout of the ADA-ISO-TI14-

E probe. Top view.

A

Key

Pin 2

Pin 1

J1 Socket

Galvanic

Isolator

Cable to Emulator

FIGURE 27 The dimensions of the 20-pin ADA-

ISO-TI14-E probe. Top view. A = 32.4 mm (1.28

in), B = 28.5 mm (1.12 in).

FIGURE 28 The ADA-ISO-TI14-E probe. Side view.

C = 20.5 mm (.81 in.), D = 14.2 mm (0.56 in.), E = 8.5

mm (0.33 in.).

Pin 1