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LAN9303 Evaluation Board User Manual

SMSC LAN9303

USER MANUAL

Revision 1.0 (05-28-09)

5

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 I

2

C 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 (

1---2

Enable Auto-MDIX on Port 1

2 3

Disable Auto-MDIX on Port 1

JP8, JP14

Port 2 Auto-MDIX

enable/disable (

1---2

Enable Auto-MDIX on Port 2

2 3

Disable Auto-MDIX on Port 2

JP9, JP15

EEPROM size jumper

,

1---2

Enable 4Kx8 and larger I

2

C EEPROMs

2 3

Enable 2Kx8 and smaller I

2

C EEPROMs

+3.3V

Strap Pullup

R2

10.0K

1/16W

1%

R1

332

1/10W

1%

LED1

R3

10.0K

1/16W

1%

LED2

R4

332

1/16W

1%

Strap Pulldown

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Содержание LAN9303

Страница 1: ...n request SMSC products are not designed intended authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe...

Страница 2: ...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...

Страница 3: ...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...

Страница 4: ...ns 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...

Страница 5: ...ult straps must be changed by an I2 C 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 T...

Страница 6: ...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...

Страница 7: ...x Collision Port 2 T1 Green Link Activity Port 1 Yellow Speed Port 1 T2 Green Link Activity Port 2 Yellow Speed Port 2 Table 2 8 Test Points TEST POINT DESCRIPTION CONNECTION TP1 Single pin unpopulate...

Страница 8: ...th 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 connecto...

Страница 9: ...n 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...

Страница 10: ...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...

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