SMSC LAN9303 Manuale utente

SMSC LAN9303 USER MANUAL Revision 1.0 (05-28-09)

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LAN9303 Evaluation Board User Manual

Revision 1.0 (05-28-09) USER MANUAL SMSC LAN9303

1 Introduction

The LAN9303 is a full featured, three-port 10/100 managed Ethernet switch designed for embedded

applications where performance, flexibility, ease of integration and system cost control are required.

The LAN9303 combines all the functions of a 10/100 Ethernet switch system, including the Switch

Fabric, packet buffers, Buffer Manger, MACs, PHY transceivers, and serial management. The

LAN9303 complies with the IEEE 802.3 (full/half-duplex 10BASE-T and 100BASE-TX) Ethernet

protocol specification and 802.1D/802.1Q management protocol specifications, enabling compatibility

with industry standard Ethernet and Fast Ethernet applications.

The EVB9303 is an Evaluation Board (EVB) that utilizes the LAN9303 to provide a fully functional

three-port single MII/RMII/Turbo MII Ethernet switch. The EVB9303 provides two fully integrated

MAC/PHY Ethernet ports (Ports 1 & 2) via on-board RJ45 connectors. Port 0 provides two MII port

connectors which support the following:

An external MII-/RMII-/Turbo MII-capable MAC (with LAN9303 in PHY mode), via the onboard 40-

pin male MII connector

An external MII-/Turbo MII-capable PHY (with LAN9303 in MAC mode), via the onboard 40-pin

female MII connector

The Port 0 mode of operation is configured via a single, 8-position, mode-configuration strap switch.

Power is supplied to the board via a +5V external wall-mount power supply. The external supply is not

necessary when Port 0 is configured for (and used in) PHY mode. In such cases, the +5V power rail

is typically supplied through the MII connector from the MAC side.

The EVB9303 includes a 8Kx8 I2C EEPROM that may be used to automatically load configuration

settings from the EEPROM into the device at reset, allowing the device to operate unmanaged. An I2C

host adapter interface header (10-pin, 2x5) is provided to simplify I2C based configuration. A simplified

block diagram of the EVB9303 can be seen in Figure 1.1.

Figure 1.1 EVB9303 Block Diagram

EVB9303

Ethernet

10/100

Ethernet

Magnetics &

RJ45

Jumper

SMSC

LAN9303

Ethernet

10/100

Ethernet

Magnetics &

RJ45

8K x 8

I2C

EEPROM

Port0

I2C Host

Adapter I/F

Port2

Port1

Mode Switch

40-Pin MII

Connector

(Male)

40-Pin MII

Connector

(Female)

external

MAC

external

PHY

LAN9303 Evaluation Board User Manual

SMSC LAN9303 USER MANUAL Revision 1.0 (05-28-09)

1.1 References

Concepts and material available in the following documents may be helpful when using the EVB9303.

2 Board Details

The following sections describe the various board features, including jumpers, LEDs, test points,

system connections, and switches. A top view of the EVB9303 is shown in Figure 2.1.

Note: The LAN9303 device is RoHS compliant. However, support components on the EVB9303

board are not necessarily RoHS compliant.

Table 1.1 References

DOCUMENT LOCATION

SMSC LAN9303 Datasheet http://www.smsc.com/main/datasheet.html

AN8-13 Suggested Magnetics http://www.smsc.com/main/appnotes.html

SMSC EVB9303 Evaluation Board Schematic http://www.smsc.com/

Figure 2.1 EVB9303 Top View

Eth. Port 1

(with integrated

magnetics & LEDs)

SMSC

LAN9303

Eth. Port 2

(with integrated

magnetics & LEDs)

JP6-JP18

Reset Switch

Port 0

MII Connector

(Male)

I2C Host

Adapter I/F

Port 0

MII Connector

(Female)

Mode

Switches

+5V Power

Input

Power SwitchJP2JP1JP3

JP4-JP5

Fuse

LAN9303 Evaluation Board User Manual

Revision 1.0 (05-28-09) USER MANUAL SMSC LAN9303

2.1 Jumpers

The following tables describe the default settings and jumper descriptions for the EVB9303. These

defaults are the recommended configurations for evaluation of the LAN9303. These settings may be

changed as needed, however, any deviation from the default settings should be approached with care

and knowledge of the schematics and datasheet. An incorrect jumper setting may disable the board.

Note: A dashed line in the Settings column indicates the board’s default jumper setting.

2.1.1 JP1 - JP6

2.1.2 JP7 - JP18

Jumpers JP7 through JP18 set various functions of the LAN9303. They can also be used as GPIOs,

LED drivers, or interrupts. When used as LED drivers, as they are on the EVB9303, they are

connected a specific way to set the strap value to a “1”, and another way to set the strap value to a

“0”. Figure 2.2 illustrates the schematic connections with the LED1 circuit as a pull-up, and the LED2

circuit as a pull-down. To illuminate LED1, the LAN9303 will drive the cathode of the LED1 low. To

illuminated LED2, the LAN9303 will drive the anode of the LED2 high.

The JP7 - JP18 jumpers must be configured in pairs to identical settings in order to realize the LED1

circuit or the LED2 circuit. The pairings are as follows:

JP7 & JP13

JP8 & JP14

JP9 & JP15

JP10 & JP16

Table 2.1 Jumpers JP1 - JP6

JUMPER DESCRIPTION SETTINGS

JP1 Connect +5V DC power

supply 1---2

IN: Connect +5V brick output to power

plane

OUT: Disconnect +5V brick power

JP2 Power switch enable jumper

1---2 Enable power switch

2 3 Disable power switch, force power ON

always

JP3 Connect +3.3V jumper 1---2

IN: Connect +3.3V regulator output to

+3.3V power plane

OUT: Disconnect +3.3V regulator

JP4 MDIO pull-up/down jumper

1---2 Connect MDIO to 1.5K pull-up to +3.3V

2 3 Connect MDIO to 2.5K pull-down to GND

JP5 MDC pull-down jumper 1---2

IN: Connect MDC to 10K pull-down

OUT: Disconnect MDC from 10K pull-

down

JP6 I2C connect jumper

1 2 Pins 1 and 2 are +3.3V

3---4 Connect I2C EEPROM to SDA

5---6 Connect I2C EEPROM to SCL

7---8 Pins 7 and 8 are GND

LAN9303 Evaluation Board User Manual

SMSC LAN9303 USER MANUAL Revision 1.0 (05-28-09)

JP11 & JP17

JP12 & JP18

The following subsections detail the jumper pair settings, their associated strap settings, and the

functional effects of setting the straps. All strap values are read during power-up and on the rising edge

of the nRST signal. Once the strap value is set, the LAN9303 will drive the LEDs high or low for

illumination according the strap value. For other designs which may use these pins as GPIOs or

interrupts, refer to the LAN9303 datasheet for additional information. In those cases, internal default

straps must be changed by an I2C or SMI master or through EEPROM fields.

2.1.2.1 Auto-MDIX / EEPROM Jumpers

Note 2.1 Paired jumpers MUST be set identically.

Note 2.2 The EVB9303 uses an 8Kx8 EEPROM. Therefore, this jumper MUST be set to 1-2.

Figure 2.2 LED Strap Circuit

Table 2.2 Jumpers - Auto-MDIX / EEPROM

JUMPER PAIR DESCRIPTION SETTINGS

JP7, JP13 Port 1 Auto-MDIX

enable/disable (Note 2.1)

1---2 Enable Auto-MDIX on Port 1

2 3 Disable Auto-MDIX on Port 1

JP8, JP14 Port 2 Auto-MDIX

enable/disable (Note 2.1)

1---2 Enable Auto-MDIX on Port 2

2 3 Disable Auto-MDIX on Port 2

JP9, JP15 EEPROM size jumper

(Note 2.1, Note 2.2)

1---2 Enable 4Kx8 and larger I2C EEPROMs

2 3 Enable 2Kx8 and smaller I2C EEPROMs

+3.3V

Strap Pullup

10.0K

1/16W

332

1/10W

LED1

10.0K

1/16W

LED2

332

1/16W

Strap Pulldown

LAN9303 Evaluation Board User Manual

Revision 1.0 (05-28-09) USER MANUAL SMSC LAN9303

2.1.2.2 Serial Management Jumpers

Note 2.3 Paired jumpers MUST be set identically.

Note 2.4 The MNGT[1:0] settings are defined in Table 2.4:

2.1.2.3 PHY Port Address Jumpers

Note 2.5 Paired jumpers MUST be set identically.

Note 2.6 The PHY_ADDR settings are defined in Tabl e 2 .6:

Table 2.3 Jumpers - Serial Management

JUMPER PAIR DESCRIPTION SETTINGS

JP10, JP16 Serial management MNGT0

jumper (Note 2.3, Note 2.4)

1 2 Set MNGT0 to “1”

2---3 Set MNGT0 to “0”

JP11, JP17 Serial management MNGT1

jumper (Note 2.3, Note 2.4)

1---2 Set MNGT1 to “1”

2 3 Set MNGT1 to “0”

Table 2.4 MNGT[1:0] Settings

MNGT1 MNGT0 SERIAL MANAGEMENT SETTING

0 0 RESERVED

01SMI

10I

2C (Default)

1 1 RESERVED

Table 2.5 Jumpers - PHY Port Address

JUMPER PAIR DESCRIPTION SETTINGS

JP12, JP18 PHY address jumpers

(Note 2.5, Note 2.6)

1 2 Set PHY_ADDR to “1”

2---3 Set PHY_ADDR to “0”

Table 2.6 PHY_ADDR Settings

PHY_ADDR

STRAP VALUE VIRTUAL PHY ADDRESS PORT 1 ADDRESS PORT 2 ADDRESS

0012

1123

LAN9303 Evaluation Board User Manual

SMSC LAN9303 USER MANUAL Revision 1.0 (05-28-09)

2.2 LEDs

Note 2.7 Assumes the LED_FUN field of the LED_CFG register is 00b.

2.3 Test Points

Table 2.7 LEDs

REFERENCE COLOR INDICATION (Note 2.7)

LED1 Green +3.3V power active

LED2 Green Full-duplex/Collision Port 1

LED3 Green Full-duplex/Collision Port 2

Green Link/Activity Port 1

Yellow Speed Port 1

Green Link/Activity Port 2

Yellow Speed Port 2

Table 2.8 Test Points

TEST POINT DESCRIPTION CONNECTION

TP1 Single pin unpopulated VDD18CORE VDD18CORE

TP2 Single pin unpopulated VDD18TX VDD18TX

TP3 Single pin populated gold post GND testpoint GND

TP4 Single pin populated gold post GND testpoint GND

TP5 2-pin populated IRQ testpoint with GND Pin 1: IRQ

Pin 2: GND

TP6 Single pin unpopulated P0_DUPLEX P0_DUPLEX

TP8 Single pin unpopulated nRST nRST

LAN9303 Evaluation Board User Manual

Revision 1.0 (05-28-09) USER MANUAL SMSC LAN9303

2.4 System Connections

2.5 Switches

This section details the various EVB9303 power, mode, and reset switches.

2.5.1 Power

Note: The EVB9303 includes a 2A fuse (F1) to protect from overcurrrent conditions. If this fuse

becomes damaged, it can be replaced with a 2A Littlefuse-154002.

Table 2.9 System Connections

PLUG/HEADER DESCRIPTION PART

J1 2-pin populated GND header 2-pin (1x2) header

J2 2-pin populated GND header 2-pin (1x2) header

J4 MII female connector for external PHY AMP/Tyco 749069-4

J5 I2C host adapter interface connector Adam Tech BHR-10-V-U-A

P1 +5V DC power connector Barrel plug, 2.0mm, center positive

P2 MII male connector for external MAC AMP/Tyco 174218-2

Table 2.10 Power Switch

SWITCH DESCRIPTION FUNCTION

S1 SPDT tiny toggle power switch Connects +5V brick power to board

LAN9303 Evaluation Board User Manual

SMSC LAN9303 USER MANUAL Revision 1.0 (05-28-09)

2.5.2 Port 0 Mode

Note 2.8 There are no default setting for this switch. Customers must choose the appropriate MII

mode as dictated by their application.

Note 2.9 The P0_MODE[2:0] settings are defined in Ta b le 2. 1 2:

Table 2.11 Port 0 Mode Switches

SWITCH DESCRIPTION FUNCTION

S2-1 8-position DIP switch, position 1

Sets P0_MODE0 low when closed (on).

Otherwise, the signal is pulled-up internally.

(Note 2.8, Note 2.9)

S2-2 8-position DIP switch, position 2

Sets P0_MODE1 low when closed (on).

Otherwise, the signal is pulled-up internally.

(Note 2.8, Note 2.9)

S2-3 8-position DIP switch, position 3

Sets P0_MODE2 low when closed (on).

Otherwise, the signal is pulled-up internally.

(Note 2.8, Note 2.9)

S2-4 8-position DIP switch, position 4

Sets P0_MODE3 low when closed (on).

Otherwise, the signal is pulled-up internally.

This switch selects the duplex polarity strap

default for Port 0 as follows:

If the strap value is “0”, a “0” on P0_DUPLEX

indicates full duplex, while a “1” indicates

half-duplex.

If the strap value is “1”, a “1” on P0_DUPLEX

indicates full duplex, while a “0” indicates

half-duplex.

The default setting is open.

S2-[5:8] 8-position DIP switch, positions 5-8 Note: These switches are not used and

should be ignored.

Table 2.12 P0_MODE[2:0] Settings

S2-3 S2-2 S2-1 PORT 0 MODE SETTINGS

000 MIIMACMode

0 0 1 MII PHY Mode

0 1 0 MII PHY Mode / 200Mbps / 12mA clock output

0 1 1 MII PHY Mode / 200Mbps / 16mA clock output

1 0 0 RMII PHY Mode / 12mA clock output

1 0 1 RMII PHY Mode / 16mA clock output

1 1 0 RMII PHY Mode / clock is input

1 1 1 RESERVED

LAN9303 Evaluation Board User Manual

Revision 1.0 (05-28-09) USER MANUAL SMSC LAN9303

2.5.3 Reset

2.6 Mechanicals

Figure 2.3 details the EVB9303 mechanical dimensions.

Table 2.13 Reset Switch

SWITCH DESCRIPTION FUNCTION

S3 SW pushbutton Reset: Generates nRST

Figure 2.3 EVB9303 Mechanicals

4.000

0.240

3.500

0.275

Ø0.125

0.192

Ø0.125

0.240

Ø0.125 Ø0.125

TOP VIEW

0.275 0.192

0.240

Indice

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