 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| ...the analog plus company TM XR-T3590ES November 1996-2 XR-T3590 Evaluation System User Manual Rev. 1.00 E1996 EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017 XR-T3590ES NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Copyright 1996 EXAR Corporation User Manual November 1996 Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. Rev. 1.00 2 Table of Contents OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIGITAL INPUT DIGITAL OUTPUT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . TRANSMITTER LINE OUTPUT AND RECEIVER LINE INPUT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRANSMITTER AND RECEIVER FUNCTION SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1. XR-T3590 Function Selection . . . . . . . . . . . . . . . . . . . . . . . . . . XR-T3590 GROUND POTENTIAL OFFSET TESTING . . . . . . . . . . . . . . . . . . . . . . . ADDENDUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 2. List of Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 1. Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2. Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 5 5 5 5 6 6 6 7 8 Rev. 1.00 3 XR-T3590ES This Page Intentionally Left Blank Rev. 1.00 4 XR-T3590ES ...the analog plus company TM XR-T3590 Evaluation System August 1996-4 OVERVIEW This unit is a 4.5 by 5.0 inch circuit board that simplifies the evaluation of the XR-T3590 Single Chip V.35 Transceiver in a CCITT V.35 application. Its features include dip switch selection of all chip options, and provisions for applying the ground potential offset voltage specified by the V.35 test procedure to the receiver inputs. Figure 1., Figure 2. and Table 2. show the demo board component layout, circuit diagram, and list of components respectively. POWER REQUIREMENTS Supply voltages of +5.0 Volts 5%V for VDD and -5.0 Volts 5% for VSS are applied to the board through banana jacks. Both power sources should be well-regulated, and each be capable of supplying 250 mA minimum. During normal operation jumper E-1 must be installed, and nothing is connected to the banana jack labeled OFFSET. DIGITAL INPUT DIGITAL OUTPUT CONNECTIONS The TTL compatible transmitter inputs are the BNC connectors mounted on the left side of the board that are labeled TX1IN, TX2IN and TX3IN. Provisions are included for installing input termination resistors R1, R2, and R3 if required. These resistors (50 or 75) are needed only if a pulse generator with a low impedance output and a fast rise time is used as a test signal source. They are not required for TTL signals applied to the board through short cables. DIP Switch Setting SEL2 ON ON ON ON OFF OFF OFF OFF SEL1 ON ON OFF OFF ON ON OFF OFF SEL0 ON OFF ON OFF ON OFF ON OFF Drivers On 1,2,3 1,2,3 1,2 1,2 1,2,3 1,2,3 Likewise, the TTL compatible receiver outputs are the BNC connectors labeled RX1OUT, RX2OUT, and RX3OUT. TRANSMITTER LINE OUTPUT AND RECEIVER LINE INPUT CONNECTIONS The line connections are made to the six RJ-11 connectors or to the corresponding test point pairs that are located on the right side of the board. The RJ-11s are for connecting twisted pair cables, and the test points provide a convenient means for viewing the output and input signals differentially on an oscilloscope. From top to bottom, the three transmitter outputs are labeled TX1OUT, TX2OUT, and TX3OUT, and the three receiver inputs are labeled RX1IN, RX2IN, and RX3IN. Note that connectors are wired so that the "A" and "B" XR-T3588 output pins and the "A" and "B" XR-T3589 input pins go to the same pin numbers on the RJ-11 connectors. Therefore, a test cable must be wired in the same manner to prevent a data inversion between the transmitter digital input and the receiver digital output. (Telephone cables typically contain a "twist" between modular connectors, and will therefore give a data inversion.) TRANSMITTER AND RECEIVER FUNCTION SELECTION The DIP switch located in the center of the board selects the logic state applied to the XR-T3590 function control pins SL2, SL1, and SL0. Table 1. shows the function for each switch setting. Note that when a DIP switch section is "OFF," a logic 1 is applied to the corresponding IC pin. Receivers On 1,2,3 1,2 1,2 1,2,3 1,2,3 1,2,3 All Off All Receivers Off DCE Mode DCE Mode With Mirrored Loopback DTE Mode DTE Mode With Mirrored Loopback All On All Drivers On Description Table 1. XR-T3590 Function Selection Rev. 1.00 5 XR-T3590ES XR-T3590 Ground Potential Offset Testing The receiver ground potential offset test specified by CCITT V.35 may be performed on the demo board. For ADDENDUM this test, jumper E-1 is first removed and then a DC voltage in the range of 4 Volts is applied between the GND and OFFSET banana jacks. Qty. 15 1 6 2 Value 51.1, 1/4W, 1% Metal Film Resistor 10K, 2%, 5 Resistor, Thick-Film Network, Panasonic 121, 1/4W, 1% Metal Film Resistor 22F, 16V, Electrolytic, Axial Lead, 5mm Dia., 2mm Spacing, Panasonic Type NHE 0.1F, 63V, Z5U Dilectric, Axial Lead, 0.1" Spacing, Panasonic 4-Position DIP Switch, CTS 2 Pin Single-row Header, Gold Shorting Jumper for Above Header Female BNC Connector, PC Mount 6-pin RJ-11 Connector Banana Jack (1 Black, 1 Red, 1 Blue, 1 Green) Pins for Digital I/O and Ground Pads 24 pin DIP Socket Spacers to Elevate Board 4-40 x 5/16" Screws Ref. Designators R1,2,3,5,7,8,10,11, 13,14,16,17,19,20,22 R4 R6,9,12,15,18,21 C1,2 Notes 3 1 2 1 6 6 3 13 1 4 4 C3,4,5 S1 E1 Connector For Digital I/O Connector For Line GND, VDD, VSS, OFFSET Connectors Digi-Key ED-5052ND, $0.0714 ea. (Qty 100) To Attach Spacers Table 2. List of Components Rev. 1.00 6 XR-T3590ES Figure 1. Component Layout Rev. 1.00 7 VDD 3 X 125 R6 C3 0.1uF R5 - R7 TO1+ + 23 22 - 21 J3 20 19 - + 4 TI1 TO1- TO2+ TO2- TO3+ 11 RO1 TO3- R02 RO3 10 9 VDD + R4 RI1+ RI1- 23456 8 SEL2 SEL1 SEL0 GND 3 3 X 125 R15 R18 R21 6 X 50 RI3- 17 R14 R17 R16 R20 + R19 R22 - 1 2 3 4 RI3+ 18 - J6 RI2- 7 12 15 RI2+ 16 J5 + 13 - 1 14 TI2 TI3 5 6 24 R10 R13 J2 R8 R11 0.1uF + C4 J1 R9 R12 6 X 50 XR-T3590ES Rev. 1.00 VSS R2 VDD VSS R3 1 2 1 2 3 4 TX1OUT 1 2 3 4 TX2OUT 1 2 3 4 TX3OUT Optional Input Termination Resistors R1 TX1IN TX2IN TX3IN RX1OUT RX2OUT RX3OUT U1 XR-T3590 J4 RX1IN 8 E1 VDD C1 22uF Jumper For Operation Without DC Offset C2 22uF VSS 1 2 3 4 10K S1 SEL2 SEL1 SEL0 8 7 6 5 1 2 3 4 1 2 3 4 RX2IN RX3IN Green Offset Red C5 0.1uF +5V Black Ground Blue -5V Figure 2. Circuit Diagram XR-T3590ES Notes Rev. 1.00 9 ...the analog plus company TM EXAR Corporation 48720 Kato Road Fremont, CA 94538 (510) 668-7000, Fax (510) 668-7017 Worldwide Web Site: http://www.exar.com Rev. 1.00 E1996 XR-T3590ES Notes Rev. 1.00 10 XR-T3590ES Notes Rev. 1.00 11 |
Price & Availability of XR-T3590ES
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |