MPZ2012S601AT000 datasheet(17/36 Pages) MICROCHIP

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Board Details & Configuration

 2017 Microchip Technology Inc.

DS50002594A-page 17

2.4.1

Switch Settings

SW2 is an eight-position switch which controls many of the KSZ9477 configuration

strap options. The KSZ9477 samples these signals at the rising edge of RESET_N to

determine some internal settings. Following reset, the configuration of these switches

is irrelevant. For initial bring-up, leave most switches in the OFF/OPEN position.

2.4.2

Jumper Settings

Table 2-1, Table 2-2 and Table 2-3 describe jumper settings. The preferred configura-

tion is shown in bold text.

TABLE 2-1:

TWO-PIN JUMPERS

Jumper

Label

Description

Open

Closed

P6 100 Mbps KSZ9477 Port 6 configured for RGMII.

This interface is connected to the

SAMA5D36 MPU. KSZ9477 Port 6

RGMII speed configuration strap set-

ting. The setting of this jumper takes

effect only after reset. This setting must

match the speed of the SAMA5D36

RGMII interface.

1000 Mbps

100 Mbps

J15

Security

Enable

Enables security chip, ATECC508A to

be used with the SAMA5D36 MPU if a

user requires to do so.

Disabled

(Default)

Enabled

J13

NAND Enable Enables the NAND flash memory.

Disabled

(Default)

Enabled

TABLE 2-2:

THREE-PIN JUMPERS

Jumper

Label

Description

Jumper 1-2

Jumper 2-3

5 VDC

Board power source: 5V barrel

connector or USB

Power from

barrel jack

USB pow-

ered. Not rec-

ommended

due to high

current

requirement.

TABLE 2-3:

MULTI-PIN HEADERS

Jumper

Label

Description

Configuration

J16

KSZ9477 Output

Header

KSZ9477 output probe

points, 4x2 header

Do not install jumpers.

Pin 1: GPIO

Pin 3: GPIO output filtered by

PL902 JitterBlocker.

Pin 5: PME_N output

Pin 7: SYNCLK - 25MHz or

125MHz output reference clock

J21

I/O Connector #2

I/O connector for the

MPU, 6X1 header

No jumpers.

J10

Serial Communica-

tion

Header used for the MPU

serial communication,

8x1 header

No jumpers. It is recommended

to use the TTL-232R-3V3 cable

from FTDI.

J18

SPI/I2C Aardvark

KSZ9477 SPI/I2C header

for external access 5x2

header

An Aardvark SPI/I2C adapter

can be attached.

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