EVB-LAN9353 Datasheet, PDF(24/43 Page) Microchip Technology – EVB-LAN9353 Evaluation Board User’s Guide

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EVB-LAN9353 Datasheet, PDF (24/43 Pages) Microchip Technology – EVB-LAN9353 Evaluation Board User’s Guide

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EVB-LAN9353 Evaluation Board Userâs Guide

3.1.6 RMII RX Clock Configurations

When LAN9353 is in MAC/PHY mode the reference clock routed either through TX or

RX Clock as shown in Table 3-14 for Port 0 and Table 3-15 for Port 1.

TABLE 3-14: RX CLOCK CONFIGURATIONS FOR PORT 0

Switch Settings

DESCRIPTION

Mode

SW23 (1-3) (Default)

SW23 (1-2)

TX Clock used as a Refer-

ence Clock

RX Clock used as a Refer-

ence Clock

RMII MAC

SW24 (1-3) (Default)

SW24 (1-2)

Reference clock used as a TX

clock

Reference clock used as a RX

clock

RMII PHY

Note: When Port 0 configured in RMII mode, short Jumper J25 (1-2).

TABLE 3-15: RMII RX CLOCK CONFIGURATIONS FOR PORT 1

Switch Settings

DESCRIPTION

Mode

SW25 (1-3) (Default)

TX Clock used as a Refer-

ence Clock

RMII MAC

SW25 (1-2)

RX Clock used as a Refer-

ence Clock

RMII MAC

SW26 (1-3) (Default)

Reference clock used as a TX RMII PHY

clock

SW26 (1-2)

Reference clock used as a RX RMII PHY

clock

Note: External PHY considered LAN8742.

Note: For Switches to short 1-3, Knob Position should be at 1-2 and vice versa.

3.1.7 GPIO Header

J27 header is used for GPIO. Pin details are given below in Table 3-16.

TABLE 3-16: PIN NAMES FOR GPIO HEADER

Signal Name

GPIO0

GPIO1

GPIO2

GPIO3

GPIO4

GPIO5

GPIO6

GPIO7

Pin Number

J27.1

J27.2

J27.3

J27.4

J27.5

J27.6

J27.7

J27.8

DS50002393A-page 24

ï£ 2015 Microchip Technology Inc.

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