Broadcom AV02-3395EN_UG_HFCT-5014_Eval-Board_2012-02-23 User guide

Brand: Broadcom

Model: AV02-3395EN_UG_HFCT-5014_Eval-Board_2012-02-23

Type: User guide

HFCT-5014 Evaluation Board

For Avago Technologies HFCT-711XPDZ, HFCT-721XPDZ

10 Gb/s 1310 nm Optical Transceiver

User Guide

Introduction

The document provides a brief introduction to the Avago

HFCT-711XPDZ and HFCT-721XPDZ 1310 nm hotplugga-

ble XFP transceivers. It describes the functionality of the

evaluation board and suggests a recommended proce-

dure to test the product. It should be used in conjunction

with the XFP preliminary Data Sheet.

The Avago HFCT-7**XPDZ is a single mode 1310 nm

optical transceiver that has a link distance of up to 10 km

(10 GbE and 10 GFC) or 2 km (OC192). The transmitter con-

tains a directly modulated 1310 nm Distributed Feedback

(DFB) laser, and a PIN photo detector within the receiver

section. The module is fully compliant to the XFP Multi

Source Agreement and to the appropriate 10 Gb/s stan-

dards for the networking protocol. The optical interface to

the module is provided via a duplex LC receptacle and the

electrical interface through a 30 pin pluggable connector.

Some evaluation boards may not be populated with the 1/64

reference clock oscillators.

Figure 1a. Evaluation board top surface (XFP heat sink removed)

Figure 1b. Detail of jumpers and power supply  lters

(XFP cage and heatsink removed)

Evaluation board and Graphical User Interface, GUI

The evaluation kit comprises:

Quantity Description

1 CD-ROM containing the GUI and the XFP

preliminary data sheet

3 sets Power Supply Leads for 2.0mm connector

1 Evaluation board (PCB) including micro controller

1 Preliminary Documentation: Data sheet

1 Standard RS232 male/female cable

A photograph of the evaluation board is shown in Figure

[1]

. Figure 1b shows a close-up (cage removed) of the

module are and shows all electrical connections and the

default setting for the jumpers. This setting enables micro-

processor control of the XFP module and evaluation board.

Note all of the PCB connections, including the RS232 lead,

must be completed prior to the supply of power to the

PCB. However, the XFP module maybe ‘hot-plugged’ into

the PCB after the power supply has been connected.

SW1 - all o

B jumpers - all on

C jumpers - all o

A jumpers - all on

Manual Mod_Desel - on

I2C lines - both on

+3.3V+5V-5.2V +1.8V +1.8V+3.3V GND

Power Supply Filters

As suggested in the XFP MSA, the evaluation board is  tted

with a power supply  lter network for each of the power

supply pins on the XFP connector. Where there are two

pins on the XFP30 connector for a Vcc supply level, e.g. 3.3

V, there are two separate supply  lters to enable the isola-

tion of one of the supply rails. Each of the six power supply

 lters can be con gured in the following ways:

1. Filter connected

2. Filter bypassed

Note that the power supply for the evaluation board ICs is

not  ltered as it is directly connected to connector 4. This

connection must be present under all circumstances.

See Table 2 for the appropriate jumper settings for each

power supply  lter.

100 nF

22 PF

L1 4.7 PH

100 nF

JP1

JUMPER A

JP3

JUMPER B

JP4

JUMPER C

Vcc5_6

CON1

2.0 mm connector

Figure 2. Example of the eval board power supply  lter circuit

Table 2. Jumper numbers for each power supply  lter

2 mm Connector Voltage supply Jumper A Jumper B Jumper C

Con 1 +5 V JP1 JP3 JP4

Con 2 -5.2 V JP2 JP5 JP10

Con 3 +1.8 V JP9 JP11 JP12

Con 4 +3.3 V JP13 JP14 JP15

Con 5 GND N/A N/A N/A

Con 6 +1.8 V JP16 JP18 JP19

Con 7 +3.3 V JP17 JP20 JP21

Note: The maximum current on any single connector is 1.0 A.

For each of the power supply circuits, the following modes

of operation are used:

1. When Jumpers A and B are ‘ON’ and C is o the  lter

is connected. This is the recommended mode of

operation.

2. When Jumpers A and B are o and only C is ‘ON’ the

power supply  lter is bypassed. This mode is useful for

testing individual Vcc power supply noise immunity.

See the XFP MSA for Power Supply Noise Immunity

testing requirements. When the Vcc pairs present on

the connector are connected within the module, only

one of the 2.0 mm connectors need be used. However,

the maximum current of 1.0 A of the XFP connector

must be considered.

Manual control mode

The 4 dipswitches (SW1) allow the user to manually

control the P_Down/RST, Tx_Dis, and Mod_Desel pins

on the 30 pin connector. In order to place the evaluation

board under microprocessor control all 4 dipswitches

must be set to ‘OFF’.

In order to enter manual control mode it is necessary to

set dipswitch 4 (marked as “Not used” on the evaluation

board) to “ON” – this causes the microcontroller on the

evaluation board to release control of the XFP module

and its connector. The behaviour of dipswitches 1-3 when

the evaluation board is in manual mode is summarised in

Table 3.

Other jumpers and switches

Jumper 8 interrupts the connection between dipswitch

3 and the 30 pin connector. If the evaluation board is in

manual mode (dipswitch 4 set to “ON”), setting jumper

8 to “OFF” will set the Mod_Desel pin to a high state dis-

abling the I

C interface in the XFP module. It is recom-

mended that this jumper be left in the “ON” position and

Table 3.

Dipswitch When set to “OFF” When set to “ON”

1 Sets the P_down/RST pin on the 30 pin connector to ‘1’,

setting the XFP module in power down mode

Sets the P_down/RST pin on the connector to ’ 0’,

setting the XFP module in normal mode and resetting

the module completely

2 Sets the TX_Dis pin on the 30 pin connector to ‘1’,

disabling laser output

Sets the TX_Dis pin on the connector to ‘0’, enabling

laser output

3 Sets the Mod_Desel pin on the 30 pin connector to ‘1’,

disabling the I

C interface in the XFP module

Sets the Mod_Desel pin on the 30 pin connector to ‘0’,

enabling the I

C interface in the XFP module.

Table 4.

LED Name Colour Description

Mod_desel Green Module selected for communication

Red Module de-selected

Tx Disable Green Laser output enabled

Red Laser disabled

Interrupt Green Module status normal

Red Internal Fault Detected Interrupt Requested

Mod_ABS Green Module present

Red Module not correctly inserted

Rx_LOS Green Light input to Rx is normal

Red Light input to Rx is below the limit

Green Module status is ‘ok’

Mod_NR Red MOD_NR = (Txfault asserted) OR (Loss of lock on the Tx) OR (Loss of Lock in Rx signal conditioners)

** Logical OR of 3 possible fault conditions. Red indicates one or more of the fault conditions has

occurred.

Oscillator

enable

Green Oscillator enabled

Red Oscillator disabled

that dipswitch 3 be used to control the logic level on the

Mod_Desel pin when in manual mode.

Jumpers 6 and 7 interrupt the SDA and SCL lines re-

spectively of the I

C bus. Setting either of these to “OFF”

will impede communication between the microcon-

troller on the evaluation board and the XFP module. It is

recommended that these two jumpers be set to the “ON”

position.

Button A1 is for resetting the evaluation board to its

default (power-up) state. Pressing this button will also

reset the XFP module by cycling the P_down/RST pin.

Button A100 is for selecting the reference clock mode. The

possible modes are: 10GbE, 10GFC, OC192, EXT. See the

section entitled “Reference clock options” for details.

LED Indicators

There are several LED indicators on the board. They are

listed in table 4, below.

10GbE 10GFC OC192

None/Ext

Ref Clock

Figure 3. Reference Clock Selection sequence using “RefCLKsel” button”

Reference clock options

Further LED indicators inform the user of which reference

clock oscillator is currently in use

. By depressing the Re-

fCLKsel button on the board, one of the three oscillators

are sequentially selected. A fourth depression results in

all of the oscillators being disabled to allow the user to

connect a baud/64 di erential reference clock to the two

SMAs marked Refclk+ and Refclk-. This external clock can

be either synchronous or asynchronous with the incom-

ing electrical data to the XFP transmitter, see the XFP MSA

for conditions of use.

Some evaluation boards may not be populated with the 1/64 reference clock oscillators.

Figure 4. Optimal receiver output eye

High speed signals

The evaluation board has been made using standard

FR4, and the high speed traces for transmit and receive

signals are approximately 4” in length. Hence the board

is not suitable for compliance testing of the XFP receiver

output eye as it has already been degraded by the traces

by the time it reaches the SMA connector. An example of

an optimal output eye is shown in Figure 4. This was ob-

tained by passing a signal from a 10Gb/s BERT through

the 30-pin connector using a host-compliance test board

as described in the XFP MSA.

The XFP transmitter input signal amplitude can be varied

to test for module compliance to the XFP MSA. When

testing Avago XFP modules error-free operation can be

observed when an input signal compliant to MSA Com-

pliance Point B is input to the evaluation board, showing

that Avago XFP modules signi cantly exceed the MSA

requirements.

How to install the Graphical User Interface, GUI

The graphical user interface is supplied as a self-extracting

installation  le for Win32-based personal computers. The

executable  le can be copied from the supplied CD-ROM

to a convenient location on the hard drive and run directly

by double-clicking. This will install all necessary software

and create a program group in the Start Menu.

Using the VIEWER Program

When the program is  rst started, there is an initial

welcome splash screen. The evaluation board is preset

to its default condition. The oscillator mode is set to o .

The TX Disable is set to ‘OFF’ (enabled). The Power Down

line is also set to ‘OFF’ (powered up). The screen shown in

Figure 5 is then displayed.

The VIEWER program consists of 5 tabbed pages, three

pull-down menus, and a series of buttons along the

bottom edge. The buttons permit the reading of the data

from the module once only or repeatedly every 1 or 5

seconds. A repeated ‘Read’ can be stopped by using the

Figure 5. GUI opening screen

“Stop Reading” button. Please note, any changes made

to the write-able areas of the GUI are not written to the

module until the “Write” button is pushed.

Pull-Down Menus

Main: Allows reading the whole of the A0 address space.

The contents of the upper 128 bytes of this space can be

one of various tables depending upon the value of the

table select byte (byte 127). Also allows exiting the GUI

application.

Communication: Allows the choice of the RS232 com

port used by the GUI (default COM1), the selection of fre-

quency of the I

C bus, and the frequency of the on-board

reference clock oscillators (if populated). In addition, this

menu contains items for de/asserting the Pdown/RST and

TxDisable pins on the 30-pin connector, and for display-

ing the module’s FW revision (this function is speci c to

Avago Technologies).

Help: Displays information about the GUI application itself.

Tabbed Pages

The tabbed pages provide an MSA-compliant interface

to the memory space of the XFP module. There are three

pages which cover the address space A0 up to byte 118, in

which the MSA de ned registers are listed and interpreted,

so that both raw register contents and calibrated data are

displayed.

The page entitled “A0: Address 0-57” displays the contents

of the signal conditioner control byte and the alarm and

warning threshold values. Some of the bits of the signal

conditioner control byte are userprogrammable – please

see the Avago Technologies HFCT-711XPDZ datasheet for

information on which of these options are available.

The page entitled “A0: Address 58-87” displays registers

pertaining to Variable Power Supply control, and also to

BER, FEC, and wavelength control features. Please refer

to the HFCT-711XPDZ datasheet for further information

on the availability of these features. The lower half of this

page shows the status of all the latched  ags showing

alarm or warning conditions. Once read, these are cleared,

but will be re-asserted if the alarm or warning condition

persists.

The page entitled “A0: Address 89-118” displays the

masking  ags corresponding to the latched interrupt

 ags. Selecting one or more of these prevents the corre-

sponding fault condition in the module from generating

an interrupt. At the bottom of the page, the values of the

analog readbacks are shown, both as raw register values

and as scaled physical quantities. To the right of this area,

the two status bytes are shown (bytes 110 and 111). In the

former, it is possible to set the SoftPDown and SoftTxDis-

able bits to put the module into the corresponding state.

Finally, at the bottom right of the page, it is possible to

enable or disable packet error checking.

The page entitled “Demo Screen” displays all of the analog

readbacks in large format (see the HFCT-711XPDZ data-

sheet for the de nition of the AUX-1 and AUX_2 signals),

along with the most important fault  ags: TxFault, LOS,

TxLoL, RxLoL, ModNR. To the left, there is information on

the Manufacturer, Serial Number and Part Number; dis-

played are also the oscillator frequency and the data rate

selected. The data rate is read back from the appropriate

actual data rate being transmitted or received.

On page entitled “Paging”, it is possible to enter the user

or vendor passwords. There is also a  eld for entering a

new user password. To the right, there is a pull-down

menu for page selection, and a button for viewing the

contents of that page. If the page selected is 1, then a new

window with three tabbed pages is opened. These detail

the contents of the Serial ID registers in the module and

are selfexplanatory. For other values of the page number,

a new window is opened which lists the contents of all the

registers in that page in hexadecimal. It is also possible to

write to these registers by selecting the checkbox for the

bytes in question, writing the new value in the appropri-

ate  elds, and pushing the “Write” button.

Bill of Materials for the XFP Customer Evaluation Board

Table 5 shows the full bill of materials with details of vendors used for some of the components.

Table 5. Bill of Material for Eval Board

Used Part Type Designator Footprint Vendor/Part number

9 0 Ohm R15 R16 R17 R27 R28 R29

R102 R110 R111

0603 Resistors

7 2.0 mm connector CON1 CON2 CON3 CON4 CON5 CON6 CON7 2 MM_SOCKET Connector: Farnell no. 497-162

2 4.7 k R1 R2 0603 Resistors

6 4.7 H

L1 L2 L3 L4 L5 L6 L_FILTER

8 10 k R3 R4 R5 R6 R24 R112 R26 R109 R25 0603 Resistors

1 10 nF C22 0603 Capacitor

1 22 k R7 0603

6 22 F

C4 C8 C9 C13 C16 C19 0603 Capacitor

J1 30 PIN XFP 30 PIN surface mount connector XFP-CON30 C onnector

2 47nF C1 C2 0603 Capacitor

3 74LVC04APW Logic1 Logic2 Logic100 TSSOP14 Logic IC

2 100 Ohm R30 R31 0402

22 100 nF C3 C5 C6 C7 C10 C11 C12 C14 C15 C17 C18 C20

C21 C23 C25 C26 C27 C28 C29 C100 C101 C102

0603 Capacitor

3 100 nF C24 C30 C103 0603 Capacitor

2 100 ohm R8 R113 0603 Resistors

2 130 R100 R101 0603

16 150 Ohm R11 R12 R13 R14 R18 R19 R20 R21 R22 R23 R103

R104 R105 R106 R107 R108

0603

1 Bit rate select A100 DTS6 Microswitch

21 JUMPER JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 JP9 JP10 JP11

JP12 JP13 JP14 JP15 JP16 JP17 JP18 JP19 JP20

JP21

Jumper

9 LED_RG L7 L8 L9 L10 L11 L12 L100 L101 L102 LED_RG

1 MAX3232CPE U2 DIP16 Maxim IC

1 Micro Reset A1 DTS6 Microswitch

1 OSCILLATOR O1 OSC-2770Y (10.0 MHz)

3 Oscillator

OSC100

OSC101

OSC102

SD-A2920

NEL Frequency Controls Inc.

DPECL (161.13 MHz)

DPECL (164.35 MHz)

DPECL (155.52 MHz)

1 PIC16LF876 U1 DIP28-300 Microcontroller

1 RJ11 Connector RJ-RA 8 Pin Header

9 pin D-type RS232 Connector F. DB-9/F Connector

SMA5 SMA3 SMA4 SMA7

SMA6 SMA1 SMA2

SMA Connector Rosenberger 32K243-40ME3

1 SW-DIP4 SW1 DIPSWITCH4 DIP Switch

1 2

3 4

7 8

9 10

13 14

15 16

17 18

21 22

23 24

PIC16LF876

Mod_ABS

Micro Reset

100 ohm

C22

10nF

22k

C23

100nF

R1 IN

R2 IN

T1 IN

T2 IN

GND

V+

V-

VCC

R1 OUT

R2 OUT

T1 OUT

T2 OUT

C1+

C1 -

C2+

C2 -

MAX3232CPE

C26

100nF

C27

100nF

C28

100nF

C29

100nF

PC1

RS232 Connector F.

RS232_TX

RS232_RX

C25

100nF

GND

RS232_TX RS232_RX

SDA

SCL

Mod_NR

STANDBY

GND

OUTPUT

VDD

OSCILLATOR

C21

100nF

Tx_Dis

Pwd/RST

Mod_desel

Interrupt

Rx_LOS

1 2

3 4

5 6

7 8

9 10

11 12

13 14

Logic1

74LVC04APW

C24

100 nF

R10

150 Ohm

RED

GREEN

LED_RG

R12

150 Ohm

R11

150 Ohm

RED

GREEN

LED_RG

R14

150 Ohm

R13

150 Ohm

RED

GREEN

LED_RG

R15

0 Ohm

R16

0 Ohm

R17

0 Ohm

Mod_desel

Interrupt

Tx_Dis

3 4

5 6

9 10

11 12

13 14

Logic2

74LVC04APW

C30

100 nF

R19

150 Ohm

R18

150 Ohm

RED

GREEN

L10

LED_RG

R21

150 Ohm

R20

150 Ohm

RED

GREEN

L11

LED_RG

R23

150 Ohm

R22

150 Ohm

RED

GREEN

L12

LED_RG

R29

0 Ohm

R28

0 Ohm

R27

0 Ohm

Mod_ABS

Mod_NR

Rx_LOS

R26

10k

R25

10k

R24

10k

Vcc_IC

R31

100 Ohm

RJ1

RJ11 for uP on EvalBoard

R30

100 Ohm

Man_Sw

10GbE_enable

OC192_enable10GFC_enable

U1_pin6

The schematics of the evaluation board are shown in the following pages.

30 PIN XFP CONNECTOR

GND

TD+

TD-

GND

Ref clk-

Ref clk+

GND

Pwd/RST

Vcc2

GND

RD+

RD-

GND

Rx_LOS

ModNR

Mod_ABS

SDA

SCL

Vcc3

GND

Vcc5

TxDis

Interrupt

Mod_des

Vee5

GND

47nF

Pwd/RST

Vcc2_20

SDA

SCL

Pin9

Pin8

Vcc5_6

Tx_Dis

Interrupt

Mod_Desel

Vee5_2

Rx_LOS

ModNR

Mod_Abs

4.7uH

C14

100nF

C12

100nF

JP13

JUMPER

Pin9

JP14

JUMPER

JP15

JUMPER

SW1

SW-DIP4

10k

JP6

JUMPER

JP7

JUMPER

Vcc2_22

Vcc2

Vcc3.3V

10k

JP8

JUMPER

4.7k

Vcc_IC

Man_Sw

Refclk_P

Refclk_N

Vcc_IC

C13

22uF

Vcc_IC

SMA1

TD+

SMA2

TD-

SMA5

Ref_clk+

SMA4

SMA RD+

SMA3

Ref_clk-

SMA6

SMA RD-

CON4

2.0mm connector

4.7uH

C11

100nF

JP9

JUMPER

Vcc2_22

JP11

JUMPER

JP12

JUMPER

4.7uH

C20

100nF

C18

100nF

JP17

JUMPER

Pin8

JP20

JUMPER

JP21

JUMPER

4.7uH

100nF

JP1

JUMPER

Vcc5_6

JP3

JUMPER

JP4

JUMPER

4.7uH

C17

100nF

C15

100nF

JP16

JUMPER

Vcc2_20

JP18

JUMPER

JP19

JUMPER

4.7uH

C10

100nF

JP2

JUMPER

Vee5_2

JP5

JUMPER

JP10

JUMPER

Vcc5.0V

Vee5.0V

Vcc1.8V

Vcc3.3V

22uF

C16

22uF

C19

22uF

CON1

2.0mm connector

CON2

2.0mm connector

CON3

2.0mm connector

CON6

2.0mm connector

CON7

2.0mm connector

CON5

2.0mm connector

1 2

3 4

5 6

9 10

Logic100

74LVC04APW

C103

100 nF

10GbE_enable

R104

150 Ohm

R103

150 Ohm

RED

GREEN

L100

LED_RG

10GFC_enable

R106

150 Ohm

R105

150 Ohm

RED

GREEN

L101

LED_RG

OC192_enable

R108

150 Ohm

R107

150 Ohm

RED

GREEN

L102

LED_RG

R102

0 Ohm

R110

0 Ohm

R111

0 Ohm

Vcc_IC

10GbE_enable

10GFC_enable

OC192_enable

Vcc_IC

Refclk_P

10GbE_enable

OC192_enable

1 2

3 4

OSC100

Oscillator DPECL

C100

100nF

Refclk_N

Refclk_P

1 2

3 4

5 6

OSC102

Oscillator DPECL

C102

100nF

Refclk_N

Refclk_P

10GFC_enable

OSC101

Oscillator DPECL

C101

100nF

Refclk_N

Vcc_IC

Refclk_N

Refclk_P

R100

130

R101

130

R109

10k

Vcc_IC

Man_Sw

A100

Bit rate select

R113

100 ohm

R112

10k

Vcc_IC

U1_pin6

Figure 6. Schematic for the additional components to provide on-board reference clocks

For product information and a complete list of distributors, please go to our web site: www.avagotech.com

Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.

AV02-3395EN - February 23, 2012

Errata

In versions of the evaluation board prior to v3.1 there is a trace

missing in the 5 V power supply  lter (visible on the top surface

between C3 and L1). In order to use the 5 V supply it is necessary

to bypass the  ltering by setting jumper JP4 to ‘ON’.

Broadcom AV02-3395EN_UG_HFCT-5014_Eval-Board_2012-02-23 User guide

Broadcom AV02-3395EN_UG_HFCT-5014_Eval-Board_2012-02-23 User guide

Broadcom AV02-3395EN_UG_HFCT-5014_Eval-Board_2012-02-23 User guide

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