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Connector definition

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Connector definition

There is no industry standard JTAG connector. Each device manufacturer differs. ST has a

specific connector and pinout for the FlashLINK Adaptor. The connector scheme on the

FlashLINK connector can accept a standard 14-pin ribbon cable connector (2 rows of 7 pins

on 0.1” centers, standard keying) or any other user specific connector that can slide onto

0.025” square posts. The pinout for the FlashLINK Adaptor connector is shown in Figure 2.

A standard ribbon cable is a good way to quickly connect to the target circuit board. If a

ribbon cable is used, then the receiving connector on the target system should be the same

connector type with the same pinout as the FlashLINK Adaptor shown in Figure 2.

Note:

The JTAG signal JTDI is sourced from the FlashLINK Adaptor and should be routed on the

target circuit board so that it connects to the JTDI input pin of the STR91x device.

The JTAG signal JTDO is an input received by the FlashLINK Adaptor and is sourced by the

STR91x device on its JTDO output pin. See Figure 3 on page 8, and Figure 4 on page 9 for

more information.

Figure 2.

Pinout for FlashLINK Adaptor and Target System JTAG connector

Note:

This diagram perspective is looking into the face of the shrouded male connector on the

FlashLINK Adaptor, 0.025-inch (0.635mm) posts on 0.100-inch (2.54mm) centers.

Connector reference: Molex 70247-1401.

Recommended ribbon cables for quick connection of the FlashLINK Adaptor to the end-

product: Samtec HCSD-07-D-06.00-01-S-N; Digikey M3CCD-14065-ND.

Note:

1

TDO is a signal destination on the FlashLINK and a signal source on the target board.

2

TDI is a signal source on the FlashLINK and a signal destination on the target board.

TCK

TMS

Vcc

GND

TERR

GND

GND

RST

TSTAT/JRTCK

CNTL

TRST

14

12

10

13

11

9

7

8

6

5

4

3

2

1

KEY

WAY

AI08867

JEN