EVB-KSZ9563
EVALUATION BOARD
USER’S GUIDE
2018 Microchip Technology Inc.
DS50002726A-page 11
Chapter 2. Board Details and Configuration
2.1
INTRODUCTION
The EVB-KSZ9563 is designed as a plug-in card to interface directly with a mating
Microchip host processor or controller board, such as the SAMA5D3-ModuLAN Board,
that supplies full power and provides full register access and configuration via IBA, SPI,
or I
2
C bus management.
2.2
POWER SOURCE
The EVB-KSZ9563 is completely bus-powered from its mating Microchip host proces-
sor or controller board. Input power is delivered via ModuLAN connector. Refer to
and the board schematics in
for details.
2.2.1
Power Probe Points
The power probe points along with the ground test points are shown in
2.2.2
Current Access Rework/Probe Points
The EVB-KSZ9563 design is not intended to perform current measurements on the
device. If needed, the current access points to measure the current consumptions of
the KSZ9563 power rails are across the following series ferrite beads to the board
powers.
• DVDDL: FB2
• AVDDL: FB3
• VDDIO: FB6
• AVDDH: FB4 for 3.3V (default populate), and FB1 for 2.5V (default not populate)
Remove the above ferrite beads and place the current probes in series across the
power probe points (
Section 2.2.1 “Power Probe Points”
) that are joined by the fer-
.
Board LED components are connected to the VDDIO power rail, and thus the mea-
sured current is higher than the amount consumed by only the KSZ9563 device.
2.3
CLOCK
The EVB-KSZ9563 utilizes the on-board Microchip DSC1001CI2-025.0000 clock chip,
a 25-MHz MEMS oscillator, as the input reference clock to the KSZ9563 device. Refer
to
and the board schematics in
for details.
2.4
RESET
2.4.1
Power-On Reset
The discrete RC/Diode (R12, C8, D3) circuit provides power-on reset to the KSZ9563
device.
