XRT83SL38/L38EVAL User Manual
Page 2 of 23
EVALUATION KIT PART LIST
This kit contains the following:
•
XRT83SL38/L38EVAL Application Board
•
XRT83SL38/L38 GUI Evaluation Software
•
XRT83SL38/L38 128-Pin TQFP
•
XRT83SL38/L38EVAL User Manual
•
XRT83SL38/L38 Datasheet
FEATURES
•
CPLD Design Which Emulates Microprocessor Support for the 8-Bit Parallel Interface
•
25 DIN Connector for Easy Connection Through a Standard Parallel Port to a PC
•
CD ROM or Floppy Disk Containing the GUI Software (Executable File)
•
Line Interface Modules Coupled to the Receiver Inputs and Transmitter Outputs
•
Power Supply Design Allowing a Single 3V Supply voltage
•
Accessible I/O Interface for Common Laboratory Equipment
•
Optimized layout with Four Layers
INTRODUCTION
The XRT83SL38/L38EVAL is a complete printed circuit board for characterizing Exar’s
XRT83SL38/L38. The XRT83SL38/L38 is a fully integrated four channel, long haul, short haul
line interface unit for T1, E1 or J1 applications.
This application board combines a proven PC board layout with optimized analog and digital
interface circuitry. The XRT83SL38/L38EVAL contains the device being tested, CPLD for
emulating microprocessor support for the 8-bit parallel interface, line interface modules coupled to
the receiver inputs and transmitter outputs, and I/O headers for a flexible user interface.
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.
PC
25 DIN Connector
A[7:0]
D[7:0]
INT
PCLK
RDY
RD
WR
CS
HW/HOSTB
RST
ALE
CPLD
XRT83SL38
XRT83L38
LIU
TTIP[7:0]
TRING[7:0]
RTIP[7:0]
RRING[7:0]
Connector
Connector
XRT83SL38/L38 PCB
Parallel Port Cable
TPOS[7:0]
TCLK[7:0]
RPOS[7:0]
RNEG[7:0]
RCLK[7:0]
TNEG[7:0]
Connector
Connector
5
Figure 1 Simplified Block Diagram of the XRT83SL38/L38EVAL Application Board
