SMSC EVB8700 Скачать руководство пользователя страница 4

LAN8700 Evaluation Board User Manual

Revision 1.0 (02-23-10)

USER MANUAL

SMSC LAN8700

4

 

2.2.1

PHY Address and LED Configuration

The LAN8700 allows the user to configure the default PHY address at power-up via the PHYAD[4:0]
configuration straps. Because these straps share functionality with device LEDs, care must be taken
to properly configure these signals. 

Table 2.1

 details the proper configuration required for each PHY

address  value. By default, all EVB8700 PHY address straps are configured to a value of “1”.

Note:

The PHYAD1 and PHYAD2 LEDs may function active-high or active-low depending on the
boards PHY address configuration. Refer to 

Table 2.1

 and the LAN8700 Datasheet for

additional information.

LED reference designators and definitions are detailed in 

Table 2.2

.

Table 2.1  PHY Address Configuration Settings

“0”

“1” (DEFAULT)

PHYAD4

(MSB)

R11 populated

R11 unpopulated

PHYAD3

R46 unpopulated

R48 populated

R36 populated

LED2 anode connected to FDUPLEX pin (flipped)

R46 populated

R48 unpopulated

R36 unpopulated

LED2 cathode connected to FDUPLEX pin

PHYAD2

R2 populated in position 2-3

R1 populated in position 2-3

R35 populated

Note:

RJ45 Yellow LED will be active-high

R2 populated in position 1-2

R1 populated in position 1-2

R35 unpopulated

Note:

RJ45 Yellow LED will be active-low

PHYAD1

R3 populated in position 2-3

R4 populated in position 2-3

R34 populated

Note:

RJ45 Green LED will be active-high

R3 populated in position 1-2

R4 populated in position 1-2

R34 unpopulated

Note:

RJ45 Green LED will be active-low

PHYAD0

(LSB)

R45 unpopulated

R47 populated

R33 populated

LED1 anode connected to SPEED100 pin (flipped)

R45 populated

R47 unpopulated

R33 unpopulated

LED1 cathode connected to SPEED100 pin

Table 2.2  LEDs

REFERENCE

COLOR

INDICATION

J1

Green

Ethernet Link

Yellow

Ethernet Activity

LED1

Green

Ethernet Speed

LED2

Green

Ethernet Full-Duplex

Содержание EVB8700

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: ...0 pin female MII connector from an existing MAC controller to the SMSC LAN8700 Ethernet PHY and out to an RJ45 Ethernet Jack for 10 100 connectivity A simplified block diagram of the EVB8700 can be se...

Страница 3: ...header J2 Note Before connecting an external power supply to TP2 ensure power is not present on the MII connector s 5V pins Connecting 5V simultaneously via the MII connector and TP2 may result in per...

Страница 4: ...LT PHYAD4 MSB R11 populated R11 unpopulated PHYAD3 R46 unpopulated R48 populated R36 populated LED2 anode connected to FDUPLEX pin flipped R46 populated R48 unpopulated R36 unpopulated LED2 cathode co...

Страница 5: ...on on Power Down mode Table 2 3 MODE 2 0 Resistor Configuration MODE 2 0 MODE DEFINITIONS MODE 2 0 PULL DOWN RESISTORS R40 MODE2 R41 MODE1 R42 MODE0 000 10BASE T Half Duplex Auto negotiation disabled...

Страница 6: ...pulated R52 must be in the 2 3 position which routes TX_ER TXD4 to pin 11 of the J2 MII header For additional information on the functionality of the nINT TX_ER TXD4 pin refer to the LAN8700 Datasheet...

Страница 7: ...he nINTSEL configuration strap value Refer to Section 2 2 3 nINT TX_ER TXD4 Pin Configuration on page 6 for additional information 2 2 6 Switches Table 2 6 J2 2x14 MII Header Pinout HEADER PIN DESCRIP...

Страница 8: ...ard User Manual Revision 1 0 02 23 10 USER MANUAL SMSC LAN8700 8 2 3 Mechanicals Figure 2 2 details the EVB8700 mechanical dimensions Figure 2 2 EVB8700 Mechanicals 1 750 3 530 0 125 0 125 TOP VIEW 0...

Страница 9: ...tion Board User Manual SMSC LAN8700 USER MANUAL Revision 1 0 02 23 10 9 3 User Manual Revision History Table 3 1 Revision History REVISION LEVEL DATE SECTION FIGURE ENTRY CORRECTION Rev 1 0 02 23 10 I...

Страница 10: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Microchip EVB8700...

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