ST20-JPI

7/10

®

3.3

Differential Link Connection

The Differential OS-Link connector is used to connect the ST20-JPI to a B300 instead of a Parallel

port.

Table 3.1 26 way D-type connector

3.4

JTAG Connection

The JTAG connector is a 20 pin male IDC header. The following table shows the pinout of the

ST20-JPI and the pinout required for the target board:

Table 3.2 JTAG connector pinout

Pin

Description

Pin

Description

1

+notSSDownReset

14

GND

2

+notSSDownAnalyse

15

GND

3

+notSSDownError

16

GND

4

+notSSUpReset

17

GND

5

+notSSUpAnalyse

18

GND

6

+notSSUpError

19

-notSSDownReset

7

+LinkOut

20

-notSSDownAnalyse

8

+LinkIn

21

-notSSDownError

9

GND

22

-notSSUpReset

10

GND

23

-notSSUpAnalyse

11

GND

24

-notSSUpError

12

GND

25

-LinkOut

13

GND

26

-LinkIn

Pin Number

Host Connection

Target Connection

Even Numbers

GROUND

GROUND

1

Reserved

Do Not Wire

3

TrigIn

TrigOut

5

TrigOut

TrigIn

7

Reserved

Do Not Wire

9

TMS (Out)

TMS (In)

11

TCK (Out)

TCK (In)

13

TDO

TDI

15

TDI

TDO

17

notRST (Out)

notRST (In)

19

notTRST (Out)

notTRST (In)