Quatech DS-200, Руководство пользователя

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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.
X Serial 1 J8
X Serial 1 J7
X Serial 0 J6
X Serial 0 J5
AUX SIGNAL FULL/HALF DUPLEX CHANNEL JUMPER
Figure 15 --- Jumper/Channel/Function correspondence
Figure 16 illustrates how connecting adjacent pins on the jumper pack
routes communication signals.
J5, J7
AUXOUT
RTS
AUXIN
CTS
XCLK
RCLK
6
3 2
5
1
4
J6, J8
TXEN
/TXEN
RXEN
6
3
2
5
1
4
TXEN
DTR
RTS
Figure 16 --- Pinout of jumpers J5-J8
DS-200/300 User's Manual 7-1