CX28331/2/3-1x Evaluation Module User Guide clock source (REFCLK) to all three channels. Y1 can be a...

CX28331/2/3-1x Evaluation Module User Guide

28333-EVMD-010-BFebruary 2003

© 2002, 2003 Mindspeed Technologies™, a Conexant BusinessAll Rights Reserved.

Information in this document is provided in connection with Mindspeed Technologies (“Mindspeed”) products. These materials are provided by Mindspeed as a service to its customers and may be used for informational purposes only. Mindspeed assumes no responsibility for errors or omissions in these materials. Mindspeed may make changes to specifications and product descriptions at any time, without notice. Mindspeed makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Mindspeed’s Terms and Conditions of Sale for such products, Mindspeed assumes no liability whatsoever.

THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF MINDSPEED PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. MINDSPEED FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. MINDSPEED SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.

Mindspeed products are not intended for use in medical, lifesaving or life sustaining applications. Mindspeed customers using or selling Mindspeed products for use in such applications do so at their own risk and agree to fully indemnify Mindspeed for any damages resulting from such improper use or sale.

The following are trademarks of Conexant Systems, Inc.: Mindspeed Technologies™, the Mindspeed™ logo, and “Build It First”™. Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. For additional disclaimer information, please consult Mindspeed Technologies Legal Information posted at www.mindspeed.com which is incorporated by reference.

28333-EVMD-010-B Mindspeed Technologies™

See page iii for a listing of kit configurations.

Ordering Information EVM Board Model Number Order Number

CX28331/2/3–1x Evaluation Module BT01-D300-002

Revision HistoryRevision Level Date Description

A — September 1999 Initial release.

B — February 2003 Changed CN8332/CN8333 EVM Users Guide (Doc # N8333UG1B) to CX28331/2/3-1x EVM Users Guide

http://www.mindspeed.com

iii Mindspeed Technologies™ 28333-EVMD-010-B

CX28331/2/3-1x EVM User Guide

CX28331/2/3-1x EVM Kit Contents

Quantity Description Order Number

1 CX28331/2/3-1x EVM board (DS3 default) BT01-D300-002

1 CX28331/2/3-1x EVM Users Guide 28333-EVMD-010-B

1 CX28331/2/3-1x Data Sheet 2833X-DSH-001

3 Crystals (44.736 (installed), 34.368, 51.840 MHz

4 Jumpers (Mini)

28333-EVMD-010-B Mindspeed Technologies™ iv

CX28331/2/3-1x EVM User Guide

Contents

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

1.0 CX28331/2/3–1x Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.1 Evaluation Module Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2.0 Setting Up the CX28331/2/3–1x EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3.0 Jumper and Switch Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.1 Jumper Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.2 Items Not in Final Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

4.0 Schematics, Silkscreen and Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

5.0 Parts Specifications and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15.1 Suggested Vendor Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

6.0 Technical Support and Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

28333-EVMD-010-B Mindspeed Technologies™ v

Contents CX28331/2/3-1x EVM User Guide

vi Mindspeed Technologies™ 28333-EVMD-010-B l

Figures

Figure 1-1. Picture of CX28331/2/3-1x EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Figure 2-1. DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Figure 4-1. CX28331/2/3-1x Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2Figure 4-2. CX28331/2/3-1x Evaluation Module—Layer 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3Figure 4-3. CX28331/2/3-1x Evaluation Module—Layer 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4Figure 4-4. CX28331/2/3-1x Evaluation Module—Layer 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5Figure 4-5. CX28331/2/3-1x Evaluation Module—Layer 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6Figure 4-6. CX28331/2/3-1x Evaluation Module—Bottom Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Figure 4-7. CX28331/2/3-1x Evaluation Module—Schematic #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8Figure 4-8. CX28331/2/3-1x Evaluation Module—Schematic #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

28333-EVMD-010-B Mindspeed Technologies™ vii

Figures CX28331/2/3-1x EVM User Guide

viii Mindspeed Technologies™ 28333-EVMD-010-B

Tables

Table 2-1. Crystal Oscillator Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Table 2-2. SW1, SW2, and SW3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Table 2-3. SW4 Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Table 2-4. RLOS Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Table 2-5. Connector J11 Digital Rail/NRZ Data Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

28333-EVMD-010-B Mindspeed Technologies™ ix

Tables CX28331/2/3-1x EVM User Guide

x Mindspeed Technologies™ 28333-EVMD-010-B

28333-EVMD-010-B

1.0 CX28331/2/3–1x Evaluation Module

1.1 Evaluation Module Features

! Allows complete evaluation of the CX28331/2/3–1x (DS3/E3/STS-1 LIU) devices! Device operation settings via DIP switches and jumpers, no microprocessor

needed for the Line Interface Unit (LIU)! Receive Loss of Signal (RLOS) performance monitoring indicators via LEDs! Jumper connectors for easy access to signals.

1.2 IntroductionThis User Guide describes the physical layout, important features, and a step-by-step procedure on the setup and use of the CX28331/2/3–1x test and Evaluation Module (EVM). The CX28331/2/3–1x EVM is a demonstration and test platform for Mindspeed’s family of Line Interface Units (LIUs). The CX28331/2/3–1x is available as a single, dual, or triple channel DS3/E3/STS-1 fully-integrated LIU. Each channel of the LIU can be independently configured via DIP switches to select various modes and test operations. This EVM platform allows system developers and product designers to quickly test and evaluate the functionality and performance of the CX28331/2/3–1x device.

The EVM board consists of a soldered CX28331/2/3–1x with peripheral logic consisting of transformers, resistors, capacitors, DIP switches, jumpers, LEDs, connectors, and a crystal for operating in DS3, E3 and STS-1 modes. There are four DIP switches on the EVM (SW1–SW4); SW1, SW2, and SW3 control the hardware configuration settings for the three channels, SW4 controls the global settings format mode (DS3 or E3) and the encoder/decoder mode (ENDECDIS).

A 5 V power supply should be connected to the board using the banana jack connectors J18 (red, positive) and J19 (black, negative) or a swage connector, J20. The 5 V is used by an on-board regulator (LT1086, VR1) to supply a 3.3 V power plane to the CX28331/2/3–1x and external components. Six 75 Ω BNC connectors (J1–J6) are used to connect the line to three receive and transmit channels of the CX28331/2/3-1x through transformers (Pulse T3001, L1–L6). A socketed oscillator (Y1) provides the reference clock source (REFCLK) to all three channels. Y1 can be a 34.368 (E3), 44.736 (DS3), or a 51.84 MHz (STS-1) clock source with 20 ppm tolerance.

Mindspeed Technologies™ 1-1

CX28331/2/3–1x Evaluation Module CX28331/2/3-1x EVM User Guide

Figure 1-1. Picture of CX28331/2/3-1x EVM

1-2 Mindspeed Technologies™ 28333-EVMD-010-B

28333-EVMD-010-B

2.0 Setting Up the CX28331/2/3–1x EVM

The 4-pin socket Y1 is used to attach a crystal oscillator of the appropriate value, based on the mode select, as given in Table 2-1.

The configuration of switches SW1, SW2, and SW3 are identical; they represent the different mode settings of the CX28331/2/3–1x device channels. Tables 2-2 and 2-3 list the recommended setting and definitions of the switches. Figure 2-1 illustrates the orientation of the switches, which is identical for all three channels. The switch positions for “1” and “0” are indicated, as well. Bold italics indicate factory defaults (DS3 mode). Asynchronous reset of the CX28331/2/3-1x is done by pressing SW9.

Table 2-1. Crystal Oscillator Values

Mode Oscillator

DS3 44.736±20ppmE3 34.368±20ppm

STS-1 51.840±20ppm

Figure 2-1. DIP Switch Settings

100998_001a

1 2 3 4 5 6 7ON"1"

"0"


Setting Up the CX28331/2/3–1x EVM CX28331/2/3-1x EVM User Guide

Table 2-3 describes the switch setting for the SW4 DIP switch, which is used for global selection of operating mode and whether or not the encoder/decoder is disabled.

Table 2-2. SW1, SW2, and SW3 Settings

SwitchPosition Setting Operation

1 Controls the power-down mode pin PDB

On The power-down mode is not operational for this channel.

Off This channel is in power-down mode.

2 Controls the RLOOP pin or remote loopback option

On Remote loopback is enabled.

Off Remote loopback is disabled.

3 Controls the LLOOP pin or the local loopback option

On Local loopback is enabled.

Off Local loopback is disabled.

4 Controls the line build out pin LBO

On Transmit cable is shorter than 450 ft., set it to On.

Off Transmit cable is longer than 450 ft., set it to Off.

5 Controls the transmitter enable/disable pin XOE

On The transmitter is enabled.

Off The transmitter is disabled.

6 Controls the transmit alarm indicate signal TAIS pin *

On LIU Transmits all ones (AIS).

Off Normal LIU operation.

7 Controls the equalizer gain in the receiver

On The equalizer gain is high, required for DS3/STS-1 shaped pulses.

Off The equalizer operates in low gain mode suitable for square pulses (E3 mode).

* Remote Loopback (RLOOP) takes precedence over TAIS. An input clock must be present on TCLK for TAIS operation.

Table 2-3. SW4 Setting (1 of 2)

SwitchPosition Position Operation

1 Controls the E3 mode pin for all channels

On E3 mode is selected.

Off DS3/STS-1 mode is selected.


CX28331/2/3-1x EVM User Guide Setting Up the CX28331/2/3–1x EVM

Jumpers J8, J9 and J10 are connected to enable the Receive Loss of Signal (RLOS) indicators - LEDs CR1, CR2 and CR3 for channels 1, 2 and 3, respectively. When the LED is on, it is a visual signal that the channel is experiencing a Receive Loss of Signal. Refer to Table 2-4.

Connector J11 provides access to the digital input/output signals that interface to an external framer device. From this connector the user has the ability to evaluate the received rail/NRZ data and clock as well as provide transmit rail/NRZ data and a clock. The RECLK pin provides access to the oscillator clock provided to the LIU REFCLK pins.

2 Controls the ENDECDIS pin for all channels

On Encoder/decoder is disabled to put rail data on the positive and negative data pins.

Off Encoder/decoder is enabled and data is only present on positive rail (NR2 data pin).

Table 2-3. SW4 Setting (2 of 2)

SwitchPosition Position Operation

Table 2-4. RLOS Indicators

LED Channel

CR1 1CR2 2CR3 3

NOTE: Since no framer exists on this board, it is expected that the device will normally be evaluated using the remote loopback feature inside the LIU.

28333-EVMD-010-B Mindspeed Technologies™ 2-3

Setting Up the CX28331/2/3–1x EVM CX28331/2/3-1x EVM User Guide

Table 2-5. Connector J11 Digital Rail/NRZ Data Signals

Pin Description Pin Description

1 GND 2 TCLK13 GND 4 TNEG1/NC15 GND 6 TPOS1/TNRZ17 GND 8 RCLK19 GND 10 RNEG1/RLCV1

11 GND 12 RPOS1/RNRZ113 GND 1415 GND 16 TCLK217 GND 18 TNEG2/NC219 GND 20 TPOS2/TNRZ221 GND 22 RCLK223 GND 24 RNEG2/RLCV225 GND 26 RPOS2/RNRZ227 GND 2829 GND 30 TCLK331 GND 32 TNEG3/NC333 GND 34 TPOS3/TNRZ335 GND 36 RCLK337 GND 38 RNEG3/RLCV339 GND 40 RPOS3/RNRZ341 GND 4243 GND 44 REFCLK


28333-EVMD-010-B

3.0 Jumper and Switch Connections

3.1 Jumper Connections

Jumpers J8, J9 and J10 are used to isolate the LED’s from being driven by the CX28331/2/3-1x for debug purposes. Jumper J7 is used to select if a 3.3 V or 5 V supply is to be connected to the VGG pin on the CX28331/2/3–1x; the default is for VGG to be connected to 3.3 V. Jumper J16 is used for current measurement and is generally left unconnected.

3.2 Items Not in Final DesignSW5, J14 and J15 are shown in the board schematic, but are depopulated; they are for Mindspeed internal testing only. They should not be added in your final design. Jumpers J12 and J13 are populated, but are intended for internal factory test purposes.


Jumper and Switch Connections CX28331/2/3-1x EVM User Guide


28333-EVMD-010-B

4.0 Schematics, Silkscreen and Board Layout

The board layout and schematic diagrams on the following pages provide the details for components and the circuits used in the EVM.


Schematics, Silkscreen and Board Layout CX28331/2/3-1x EVM User Guide

Figure 4-1. CX28331/2/3-1x Evaluation Module

8333

_021


CX28331/2/3-1x EVM User Guide Schematics, Silkscreen and Board Layout

Figure 4-2. CX28331/2/3-1x Evaluation Module—Layer 1

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8333

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8333

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Figure 4-6. CX28331/2/3-1x Evaluation Module—Bottom Side

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Figure 4-7. CX28331/2/3-1x Evaluation Module—Schematic #1

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OD

E

EN

DE

CD

IS

REQH3/TMUXA1

LBO1

LBO

2

LBO3

LLOOP1

LLO

OP

2

LLOOP3

PDB1

PD

B2

PDB3

RBIAS

RCLK1

RC

LK2

RCLK3

REFCLK1

RE

FCLK

2

REFCLK3

REQH1/TMUXDAT

RE

QH

2/TM

UX

A0

RLI

NE

1M

RLI

NE

1P

RLI

NE

2M

RLI

NE

2P

RLINE3M

RLINE3P

RLOOP1

RLO

OP

2

RLOOP3

RLOS1

RLO

S2

RLOS3

RNEG1/RLCV1

RN

EG

2/R

LCV

2

RNEG3/RLCV3

RPOS1/RNRZ1

RP

OS

2/R

NR

Z2

RPOS3/RNRZ3

RV

DD

1

RV

DD

2

RVDD3

RV

SS

1

RV

SS

2

RVSS3

TAIS1/TMUXA2

TAIS

2/TM

UX

A3

TAIS3/TMUXA4

TCLK1

TLIN

E1M

TLIN

E1P

TLIN

E2M

TLIN

E2P

TLIN

E3M

TLIN

E3P

TMUXIO1

TMUXIO2

TMU

XLA

T

TNEG1/NC1

TPOS1/TNRZ1 TPO

S2/

TNR

Z2

TPOS3/TNRZ3

TVD

D1

TVD

D2

TVD

D3

TVS

S1

TVS

S2

TVS

S3

VGG

XOE1

XO

E2

XOE3

TCLK

2

TNE

G2/

NC

2

TCLK3

TNEG3/NC3

TCLK

2

TNE

G2/

NC

2

TCLK

3

TNE

G3/

NC

3

+3_3

V

RE

QH

2/TM

UX

A0

RE

QH

3/TM

UX

A1

TAIS

1/TM

UX

A2

TAIS

2/TM

UX

A3

TAIS

3/TM

UX

A4

RE

QH

1/TM

UX

DAT

8333_027



Figure 4-8. CX28331/2/3-1x Evaluation Module—Schematic #2

GREEN

used for heat sink.1 square inch copper plane

NO LOAD

Ground

+5 Volts

Power Supply

Mount these parts close together.

CHASSIS GND

CHASSIS GND

NO LOAD

POWER

SWAGE

CC

CC

CC+

CC+

BJACK

BJACK

CC

CC

1 32

+3_3VREG

321

VR1

E1

1

2CR12

CR13

1 2

POLYSWITCH

21

SMD200-2

FS1

ZERO

R29

330

R30

C17

1025V

C18

22010V

12

J16

1

3

2

J17

RED_BANNANAJ18

BLACK_BANNANAJ19

J20

C16

0.1

C19

0.1

+5V

GN

D

VIN

VO

UT

+3_3V

SHUNT

PIN

SLEEVE

8333_029




28333-EVMD-010-B

5.0 Parts Specifications and Dimensions

5.1 Suggested Vendor Information

General Electronic Devices (Xtal)320 So. Pacific St.San Marcos, CA 92069 Tel: (760) 591-4170Fax (760) 591-4164Email:[email protected]: www.gedlm.com

Crystek Corporation (Xtal)12730 Commonwealth Drive Fort Myers, Fl 33913Tel: (800) 237-3061Fax: (941) 561-1025Email: [email protected]: www.crystek.com

Pulse Engineering (Xfmers)12220 World Trade DriveSan Diego, CA 92128Tel: (858) 674-8307Fax: (858) 385-8000Email: [email protected]: www.pulseeng.com

Digi-KeyWebsite: www.digi-key.com

Allied ElectronicsWebsite: www.allied.avnet.com


www.gedlm.com

www.crystek.com

www.pulseeng.com

www.digi-key.com

www.allied.avnet.com

Parts Specifications and Dimensions CX28331/2/3-1x EVM User Guide


28333-EVMD-010-B

6.0 Technical Support and Documentation

For technical questions, contact a field applications engineer (FAE) located at the Mindspeed Technologies sales office in your region. See the Mindspeed Technologies Web site (www.mindspeed.com) for a list of worldwide sales offices.

For additional documentation and/or current revisions, go to our Web site (www.mindspeed.com), enter CX28333 in the Product/Document Search window, and select the Go button.


Technical Support and Documentation CX28331/2/3-1x EVM User Guide


www.mindspeed.com

General Information:U.S. and Canada: (800) 854-8099International: (949) 483-6996Headquarters—Newport Beach4000 MacArthur Blvd., East TowerNewport Beach, CA 92660

Date post:	08-Mar-2018
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CX28331/2/3-1x Evaluation Module User Guide clock source (REFCLK) to all three channels. Y1 can be a...

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