6

DS700DB1

CDB53L21

1.9

Stand-Alone Switches

The “FPGA H/W Control” and “CS53L21 H/W Control” switches control all Hardware Mode options.

Section 3. “Hardware Mode Control” on page 13 provides a description of each topology.

1.10

Control Port Connectors

A graphical user interface is available for the CDB53L21, allowing easy manipulation of each register. This

GUI interfaces with the CDB via the RS-232 or USB connectors and controls all Software Mode options.

Section 2. “Software Mode Control” on page 7 provides a description of the Graphical User Interface (GUI).

1.10.1

RS-232 and USB Connectors

Connecting a cable to the RS-232 connector or the USB 1.0/2.0 connector and launching the Cirrus

FlexGUI software enables the CDB53L21 in Software Mode.