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Related Manuals for Exar XRT83SL38/L38EVAL
Summary of Contents for Exar XRT83SL38/L38EVAL
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Page 1: User Manual
XRT83SL38/L38EVAL User Manual XRT83SL38/L38EVAL EVALUATION SYSTEM USER MANUAL Page 1 of 23... - Page 2 Complete AC and DC performance of the XRT83SL38/L38 can be evaluated by interfacing external laboratory equipment. SYSTEM CONFIGURATION-LAB SETUP The XRT83SL38/L38EVAL application board is setup as a common test circuit. Figure 1 shows a simplified block diagram of the default test configuration. XRT83SL38/L38 PCB...
- Page 3 XRT83SL38/L38EVAL can be controlled through a standard parallel port cable connected to a PC. The GUI was written to simplify the evaluation process of Exar’s LIU. Access to all the control registers and functionality fo all four channels is available. For information on the GUI software, see the “XRT83SL38/L38EVAL GUI SOFTWARE”...
- Page 4 XRT83SL38/L38EVAL User Manual External Impedance Mode (T1/J1, 1.544MHz, 100ohm/110ohm) The XRT83SL38/L38EVAL can be programmed for external impedance mode through the microprocessor interface. For T1 applications, two 3.1ohm resistors are necessary on the transmit outputs of the LIU. A 100ohm resistor is necessary on the receiver inputs. (Note: These values do not change when using either a 1:2 or 1:2.45 turns ratio on the transmit side) Figure 4...
- Page 5 V C C Design File Name = H:\XRT LIU\XRT83L38\SCHEMATIC\XRT83L38 EVAL.DSN EXAR AD Infinitum 1.544MHz 2.048MHz Title XRT83SL38/L38 Size Document Number XRT83SL38/L38 LONG HAUL, SHORT HAUL LIU Date: Tuesday, September 17, 2002 Sheet Figure 6 XRT83SL38/L38EVAL Schematic Page 1 Page 5 of 23...
- Page 6 See Note 1 R132 30.1 Design File Name = H:\XRT LIU\XRT83L38\SCHEMATIC\XRT83L38 EVAL.DSN EXAR AD Infinitum Title XRT83SL38/L38 Size Document Number XRT83SL38/L38 LONG HAUL, SHORT HAUL LIU Date: Tuesday, July 02, 2002 Sheet Figure 7 XRT83SL38/L38EVAL Schematic Page 2 Page 6 of 23...
- Page 7 See Note 1 R176 30.1 Design File Name = H:\XRT LIU\XRT83L38\SCHEMATIC\XRT83L38 EVAL.DSN EXAR AD Infinitum Title XRT83SL38/L38 Size Document Number XRT83SL38/L38 LONG HAUL, SHORT HAUL LIU Date: Tuesday, July 02, 2002 Sheet Figure 8 XRT83SL38/L38EVAL Schematic Page 3 Page 7 of 23...
- Page 8 XRT83SL38/L38EVAL User Manual Figure 9 XRT83SL38/L38EVAL Layout Plot-Top Silk Screen Page 8 of 23...
- Page 9 XRT83SL38/L38EVAL User Manual Figure 10 XRT83SL38/L38EVAL Layout Plot-Top Layer Page 9 of 23...
- Page 10 XRT83SL38/L38EVAL User Manual Figure 11 XRT83SL38/L38EVAL Layout Plot-Ground Plane Page 10 of 23...
- Page 11 XRT83SL38/L38EVAL User Manual Figure 12 XRT83SL38/L38EVAL Layout Plot-Power Plane Page 11 of 23...
- Page 12 XRT83SL38/L38EVAL User Manual Figure 13 XRT83SL38/L38EVAL Layout Plot-Bottom Layer Page 12 of 23...
- Page 13 XRT83SL38/L38EVAL User Manual The XRT83SL38/L38 Evaluation Board GUI Software The XRT83SL38/L38 Evaluation Board Kit comes with a floppy disk / CD ROM that contains a file of the name: “xrt83SL38/L38vxx.exe”. This file is the executable code for the “XRT83SL38/L38 Evaluation Board GUI Software.
- Page 14 XRT83SL38/L38EVAL User Manual The XRT83SL38/L38 Evaluation Board GUI Software Start Up Window Shortly after the user has selected and started up the “XRT83SL38/L38 Evaluation Board GUI Software, the PC monitor should be display the “Start-up” Window, as depicted below in Figure Figure 14, The “Start-Up”...
- Page 15 XRT83SL38/L38EVAL User Manual The File pull-down Menu Figure 15 presents an illustration of the “Start-Up” window with the “File” pull-down menu fully visible. Figure 15, Illustration of the “File” Pull-down Menu Figure 15 indicates that the “File” pull-down menu contains the following options: “Port”...
- Page 16 XRT83SL38/L38EVAL User Manual The “Tests” pull-down Menu Figure 16 presents an illustration of the “Start-up” window with the “Tests” pull-down menu fully visible. Figure 16, Illustration of the “Tests” Pull-down Menu Figure 16 indicates that the “Tests” option only consists of the “Evaluation Board Test” option.
- Page 17 XRT83SL38/L38EVAL User Manual Figure 17, Illustration of Host Mode Test Dialog Box Figure 18, Illustration of Host Mode Test Dialog Box Page 17 of 23...
- Page 18 XRT83SL38/L38EVAL User Manual At this point, the user will be able to specify his/her configuration settings for the XRT83SL38/L38 device; and implement these settings. A more detailed discussion of the “Host Mode” and “Hardware Mode” Dialogs is presented in the next section.
- Page 19 XRT83SL38/L38EVAL User Manual The Host Mode Test Dialog Box represents the main interface that the user will have to the XRT83SL38/L38 Evaluation Board, via the GUI Software. All options that are offered by the XRT83SL38/L38 device, when operating in the “Host” Mode, are offered via the “Host Mode Test Dialog Box”.
- Page 20 XRT83SL38/L38EVAL User Manual The Global Configuration Section The “Global Configuration” Section of the Host Mode Test Dialog Box permits the user to do the following. It is important to note settings in this section take effect only after either “START” or “Modify”...
- Page 21 XRT83SL38/L38EVAL User Manual • Jitter Attenuator, this selection box allows the user to place the jitter attenuator in either the transmit or receive path or neither. • Rx External Resistor, setting allows the user to set the external Receive fixed resistor to one of te following values: none, 60 ohms, 52.5 ohms, or 37.5 ohms.
- Page 22 XRT83SL38/L38EVAL User Manual The Hardware Mode Test Dialog Box represents the main interface that the user will have to the XRT83SL38/L38 Evaluation Board, via the GUI Software. All options that are offered by the XRT83SL38/L38 device, when operating in the “Hardware” Mode, are offered via the “Hardware Mode Test Dialog Box”.
- Page 23 XRT83SL38/L38EVAL User Manual General Configuration The “General Configuration” Section of the Host Mode Test Dialog Box permits the user to do the following. (It is important to note settings in this section take effect only after either “START” or “Apply Changes” buttons are pressed.) •...
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