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10 DTE / DCE Configuration
The MPA-200 can be purchased in either Data Terminal Equipment (DTE) or
Data Communications Equipment (DCE) configuration. The two configurations
share some important features, but have significant differences which need to be
mentioned.
Both the DTE and DCE configurations allow the user to enable and disable the
driver circuitry on the MPA-200 through the settings of jumper block J7. See the
chapter JUMPER BLOCK CONFIGURATIONS on page 11 for further informa-
tion on the configuration of this jumper block. They both also have the ability to
receive data and receive clock (RCLK) on channel B of the SCC. This allows the
user to transmit and receive on two different channels.
The differences between the MPA-200’s DTE configuration and its DCE configu-
ration include signal definitions, control signals, clocking options and testing. The
following sections describe each configuration individually and in detail.
25 Quatech Inc., MPA-200/300 Manual