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I / O - Serial

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Serial Pinouts

The tables below show the different serial pinouts for Tyan motherboards with built-in I/O.

S2054 and S1836 system boards only

Other system boards (DB-9P)

Signal

DB9

10 pin IDC

Signal

DB9

10 pin IDC

DCD

1

1

DCD

1

1

RX

2

6

RX

2

2

TX

3

2

TX

3

3

DTR

4

7

DTR

4

4

GND

5

3

GND

5

5

DSR

6

8

DSR

6

6

RTS

7

4

RTS

7

7

CTS

8

9

CTS

8

8

RI

9

5

RI

9

9

NC/KEY

NC/KEY

10

NC/KEY

NC/KEY

10

Pinout S1836/S2054 COM2

Pinout Standard COM2

1 - 1 / 2 - 3 / 3 - 5
4 - 7 / 5 - 9 / 6 - 2
7 - 4 / 8 - 6 / 9 - 8

1 - 1 / 2 - 2 / 3 - 3
4 - 4 / 5 - 5 / 6 - 6
7 - 7 / 8 - 8 / 9 - 9

Systemboard Header

S272x system boards

Signal

DB9 PIN (J33)

10 PIN header (J34)

DCD

1

1

RX

2

3

TX

3

5

DTR

4

7

GND

5

9

DSR

6

2

RTS

7

4

CTS

8

6

RI

9

8

NC/KEY

NC/KEY

10

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