Quatech DS-200/300 user manual Output Configuration, Jumper/Channel/Function correspondence

Models: DS-200/300

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7. Output Configuration

The DS-200/300 provides four differential communication signals per channel. The two output signals are Transmit Data (TxD) and Auxiliary Output (AUXOUT). The two input signals are Receive Data (RxD) and Auxiliary Input (AUXIN). A ground signal is also provided.

The DS-200/300 allows the user to select whether handshaking signals or clock signals are transmitted over the auxiliary lines. The available input signals for AUXIN are Clear To Send (CTS) and the Receive Clock (RCLK). The available output signals for AUXOUT are Request To Send (RTS), the Transmit Clock (XCLK), and the AUXIN signal (for loopback). Configuration is done using jumpers J5 and J7.

Either half-duplex or full-duplex operation can be selected for each communications channel. If half-duplex operation is selected, one of the UART's signals (either DTR or RTS) is used to enable the transmitter drivers (TXEN). The inverse of the transmitter enable (/TXEN) is used to enable the receiver drivers (RXEN). This insures that the driver and the receiver are not enabled at the same time. Configuration is done using jumpers J6 and J8.

JUMPER

CHANNEL

FULL/HALF

AUX SIGNAL

 

 

DUPLEX

 

J5

Serial 0

 

X

 

 

 

 

J6

Serial 0

X

 

 

 

 

 

J7

Serial 1

 

X

 

 

 

 

J8

Serial 1

X

 

 

 

 

 

Figure 15 --- Jumper/Channel/Function correspondence

Figure 16 illustrates how connecting adjacent pins on the jumper pack routes communication signals.

AUXOUT

 

XCLK

TXEN

 

/TXEN

RTS

 

 

TXEN

 

 

4

5

6

4

5

6

1

2

3

1

2

3

CTS

 

 

DTR

 

 

AUXIN

 

RCLK

RTS

 

RXEN

J5, J7

J6, J8

Figure 16 --- Pinout of jumpers J5-J8

7-1

Quatech Inc.

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Quatech DS-200/300 user manual Output Configuration, Jumper/Channel/Function correspondence