Microchip Technology SAMA7G54-EK Manuale utente

SAMA7G54-EK

SAMA7G54-EK User's Guide

Scope

This user's guide provides detailed information on the overall design of the SAMA7G54 Evaluation Kit (SAMA7G54-

EK) and describes how to use the kit.

The kit is the evaluation platform for the SAMA7G5 Series devices.

Figure 1. SAMA7G54-EK Overview

and its subsidiaries

User Guide DS50003273A-page 1

1. Introduction

1.1 Document Layout

The document is organized as follows:

• Introduction

• Product Overview—Important information about the evaluation kit

• Function Blocks—Evaluation kit specification and high-level description of the major components and interfaces

• Installation and Operation—How to get started with the evaluation kit

• Appendix A: Schematics and Layout—Evaluation kit schematics and layout diagrams

• Appendix B: Unmounted Elements—List of unmounted components, description of their use in the system and

guidance for manually assembling the Wi-Fi®/Bluetooth® module

1.2 Reference Documents

The following Microchip document are available and recommended as supplemental reference resources.

Table 1-1. Reference Documents

Document Title Document Type Literature No.

SAMA7G5 Series Data sheet DS60001765

MCP16502 Data sheet DS20006275

24AA025E48 Data sheet DS20002124

KSZ8081RNA/RND Data sheet DS00002199

KSZ9131RNX Data sheet DS00002841

MCP2542FD Data sheet DS20005514

ATWILC3000-MR110xA Data sheet DS70005327

ATECC608B Data sheet DS40002239

PAC1934 Data sheet DS20005850

How to Manually Solder the ATWILC3000 Module on an MPU Board Application note AN3227

SAMA7G54-EK

Introduction

and its subsidiaries

User Guide DS50003273A-page 2

2. Product Overview

The SAMA7G54 Evaluation Kit (SAMA7G54-EK) provides a versatile Total System Solution platform that highlights

Microchip MPU and connectivity ICs.

The board features on-board memories, two Ethernet interfaces, three USB ports, two CAN interfaces, one SD card

connector, two mikroBUS™ click interface headers to support over 450 MikroElektronika Click boards™, an RPi CSI

camera to support a camera module, an RPi extension connector to support several extension boards, and provision

to solder a Microchip ATWILC3000-MR110xA Wi-Fi/Bluetooth module.

Note: RPi stands for “Raspberry Pi”. Raspberry Pi is a trademark of Raspberry Pi Trading.

2.1 SAMA7G54-EK Features

Table 2-1. SAMA7G54-EK Features

Characteristic Specifications Components

Processor 14x14 mm, 0.65 mm pitch, 343-ball

TFBGA Microchip SAMA7G54-V/4HB

External clock

MPU: 24 MHz

MPU: 32.768 kHz Crystal

Ethernet: 25 MHz

Microchip DSC1001DI5-024.0000

NDK NX2012SA-32.768-STD-MUB-1

2 * Microchip DSC1001DI5-025.0000

Memory

One 16-bit, 4-Gbit DDR3L

One 32-Gbit e.MMC

One 1-Gbit Octal SPI Flash

Two EEPROMs with EUI-48™ MAC ID

Alliance Memory AS4C256M16D3LC-12BCNTR

SkyHigh Memory S40FC004C1B1C00000

Micron MX66LM1G45GXDI00

2 * Microchip 24AA02E48

SD/MMC One standard 4-bit SD Card interface

with power control Microchip MIC9085

USB

One Micro-AB host/device with power

switch

One Type-A host with power switch

One Type-C™ host with power switch

3 * Microchip MIC2025

CAN Two CAN interfaces Microchip MCP2542FD

Ethernet

One Ethernet 10/100 port

One Gigabit Ethernet port

Microchip KSZ8081

Microchip KSZ9131

Wi-Fi/BT One optional Wi-Fi/BT interface Slot for Microchip ATWILC3000

Audio

One SPDIF RX port

One SPDIF TX port

Four digital microphones

–

SPK0641HT4H-1

Camera One RPi CSI camera interface –

Debug port

One J-Link-OB + CDC

One JTAG interface

Embedded J-Link-OB through the CDC

(Communication Device Class) interface

(ATSAM3U4C TFBGA100)

SAMA7G54-EK

Product Overview

and its subsidiaries

User Guide DS50003273A-page 3

...........continued

Characteristic Specifications Components

Board monitor

One RGB (red, green, blue) LED

Four push button switches

–

Expansion

One RPi Expansion connector

Two mikroBUS connectors

–

Hundreds of possible click extensions featuring

Microchip functions

Power

management

One power management IC

One power consumption measurement

device

Microchip MCP16502

Microchip PAC1934

Board supply From USBA or from wall adapter –

Backup battery SuperCap –

2.2 SAMA7G54-EK Content

The SAMA7G54 evaluation kit includes the following:

• The SAMA7G54-EK board

• Two USB-A to USB Micro-AB cables

2.3 Evaluation Kit Specifications

Table 2-2. Evaluation Kit Specifications

Characteristic Specifications

Board SAMA7G54-EK

Board supply voltage External or USB-powered

Temperature

Operating: 0°C to +70°C

Storage: -20°C to +70°C

Relative humidity 0 to 85% (non-condensing)

Board dimensions 160 x 100 mm

RoHS status Compliant

2.4 Power Sources

Two options are available to power up the SAMA7G54-EK board:

• Through an external AC to DC +5V wall adapter connector (J1)

• Through the USB Micro-AB connector on the USBA port (J7)

Table 2-3. Electrical Characteristics

Electrical Parameter Value

Input voltage 5 VDC

Maximum input voltage 6 VDC

SAMA7G54-EK

Product Overview

and its subsidiaries

User Guide DS50003273A-page 4

...........continued

Electrical Parameter Value

Maximum 3.3 VDC current 300 mA

CAUTION

The SAMA7G54-EK board runs at a 3.3V voltage level logic. The maximum voltage that the I/O pins can

tolerate is 3.3V. Providing higher voltages (e.g. 5V) to an I/O pin could damage the board.

2.5 On-Board Connectors

The fully-featured SAMA7G54 Evaluation Kit integrates multiple peripherals and interface connectors, as shown in

the following figure.

Figure 2-1. SAMA7G54-EK Connectors

J-Link-OB

Micro-AB

JTAG 20-pin

IDC Connector 3 x User Buttons MIPI CSI Camera

Connector

Disable

Boot

Button

UART DEBUG

External

Power

Jack

2 x CAN

Connector

USB 2.0

Micro-AB

USB Host

Type-C

USB Host

Type-A

SD Card

Connector

Footprint to

solder the

WiFi/BT

Module

WiFi/BT

Debug

Connector

SPDIF

Connector

SPDIF

Connector

Ethernet

10/100

Gigabit

Ethernet

Disable

Boot

Jumper

mikroBUS

Connector

Raspberry Pi

Connector

mikroBUS

Connector

WiFi/BT

Table 2-4. SAMA7G54-EK Board Interface Connectors

Connector Interfaces To

J1 External power jack

J4 Standard SDMMC connector

J5 Gigabit Ethernet RJ45

J6 Ethernet 10/100 RJ45

SAMA7G54-EK

Product Overview

and its subsidiaries

User Guide DS50003273A-page 5

...........continued

Connector Interfaces To

J7 USB 2.0 Micro-AB (USB-A)

J8 USB 2.0 Type-C (USB-B)

J9 USB 2.0 Type-A (USB-C)

J10 mikroBUS socket (mBUS1)

J11 MIPI CSI camera connector

J12 mikroBUS socket (mBUS2)

J13 40-pin Raspberry Pi connector

J14 Tamper pins connector

J15 ATWILC3000 debug connector

J16 ATWILC3000 UART debug connector

J17 Dual CAN connector

J18 SPDIF RX connector

J19 SPDIF TX connector

J20 UART debug connector (FTDI connector)

J22 Disable boot jumper

J23 PCB connector for factory-programming the SAM3U/J-Link-OB (not to be used by end user)

J24 J-Link-OB USB connection

J27 JTAG, 20-pin IDC

2.6 Default Jumper Settings

The following picture shows the default jumper settings. Jumpers in blue are in open position, jumpers in red are in

closed position.

SAMA7G54-EK

Product Overview

and its subsidiaries

User Guide DS50003273A-page 6

Figure 2-2. SAMA7G54-EK Default Jumper Settings

Table 2-5. SAMA7G54-EK Jumper Settings

Jumper State Function

J2 Closed VDDBU current measurement

Open (default) RMII Ethernet interface is selected.

Closed The 4-microphone PDMIC interface is selected.

J22

Open (default) Booting from on-board memory is permanently allowed and only disabled during SW4

pressure.

Closed Booting from on-board memory is permanently disabled.

J25

Open (default) Enables UART communication (CDC) between MPU and SAM3U.

Closed Disables UART communication (CDC) between MPU and SAM3U.

J26

Open (default) The on-board J-Link interface is enabled and used for MPU debugging.

Closed The on-board J-Link interface is disabled. MPU debugging is done through the JTAG

connector (J27).

SAMA7G54-EK

Product Overview

and its subsidiaries

User Guide DS50003273A-page 7

3. Function Blocks

This section covers the SAMA7G45-EK specifications and provides a high-level description of the board's major

components and interfaces.

This document is not intended to provide detailed information about the processor or about any other components

used on the board. Refer to the components documentation for further details.

Figure 3-1. SAMA7G54-EK Block Diagram

SAMA7G54-V/4HB

BGA-343

14x14mm

0.65mm pitch

Power Supply

MCP16502AB

+SuperCap

System

Supplies

Power

Input

Connectivity

2xmikroBUS

Raspberry Pi

40-pin

Connector

USB 2.0 Host Type A

USB 2.0 Host Type C

USB 2.0 Host/Device Type µAB

SDCard

Connector

RPi CSI

Connector

Memories

4Gb 16-bit

DDR3L

AS4C256M16D3LC

12BCNTR

8-bit 32Gb e.MMC

S40FC004C1B1C00000

8-bit 128MB OctaSPI

MX66LM1G45GXDI00

2x EEPROM

24AA025E48

Peripherals

Gigabit Ethernet

KSZ9131RNX

10/100/1000Mbps

Ethernet

KSZ8081RNAIA

10/100Mbps

WiFi/BT

ATWILC3000-

MR110xA (Not

mounted)

SPDIF RX/TX

2x CAN

Interface

User Interface

User, nRST,

WKUP Button

RGB LEDS

JLINK

CDC/JTAG

FTDI DBGU

4x PDM

Microphone

Secure Element

ATECC608B

SAMA7G54-EK

Function Blocks

and its subsidiaries

User Guide DS50003273A-page 8

3.1 Power Supply Topology and Power Distribution

This section describes the implementation and circuitry that ensure adequate voltage stability for all the devices on

the board and a correct power-up sequence for the MPU. The power-up and power-down sequences indicated in the

SAMA7G5 Series data sheet must be respected for a reliable operation of the device.

3.1.1 Input Power Options

The SAMA7G54-EK board can be powered through:

• An external AC to DC +5V wall adapter connected via a 2.1 mm center-positive plug into the power jack of the

board (J1); the recommended output capacity of the power adapter is 2A

• USB port A (J7)

3.1.1.1 Wall Adapter Input

The 5V_EXT from the wall adapter is protected through a pair of Schottky/Zener diodes (D1 and D2) that limit the

input voltage to 5.1V.

The following figure shows the wall adapter input power supply topology.

Figure 3-2. Wall Adapter Input Power Schematic

2.1mm

EJ508A

GND

5V_EXT

External 5V Input Power and Input Power protection

10uF

25V

1206

5V_DC

GNDGND

TP LOOP Black TH

TP2

GND

10uF

25V

1206

GND

PMEG3030EP

5.1V

MMSZ4689ET1G

3.1.1.2 USB Supply Input

The USB-powered operation comes from the USB device port connected to a PC or a 5 VDC supply. The USB

supply is enough to power the board in most applications. It is important to note that when the USB supply is used,

the USB port has limited power. If a USB host port is required for the application, it is recommended to use the

external DC supply or a more capable micro USB external power supply.

The following figure shows the USB input power supply topology.

SAMA7G54-EK

Function Blocks

and its subsidiaries

User Guide DS50003273A-page 9

Figure 3-3. USB Input Power Schematic

USBA_N

USBA_P

20pF

50V

0402

C194

20k

0402

R188

GNDGND

USBA_VBUSDETECT_PD11

GND_USBA

USBA_VBUS_5V

FLG 2

GND

4NC 5

OUT 6

OUT 8

USB Power Switch

MIC2025-1YM

U16

USBA_VBUS_5V

USBA_OVCUR_PC7

USBA_EN_5V_PB2

5V_MAIN VDD_3V3

GND

10uF

25V

1206

C195

10uF

25V

1206

C197

0475890001

5 0

ID D+ D- +5VGND

Mini-B Receptacle

USB Micro-AB type connector to the USBA port (HOST/DEVICE)

0.1uF

10V

0402

C198

100uF

10V

1210

C200

22uF

10V

1206

C199

0.1uF

10V

0402

C196

10k

0402

R189

10k

0402

R187

10k

0402

R186

120R

BLM18PG121SN1D

FB9

120R

BLM18PG121SN1D

FB10

DIFF90

0603

R185

USB_VBUS_5V

GND

GND_USBA

90Ω±15% differential trace impedance

Routing top or bottom

Note: USB-powered operation eliminates the need for additional wires and batteries. It is the preferred mode of

operation for any project that requires only a 5V source at up to 500 mA.

3.1.1.3 Automatic Power Switch

The switch between the two powering options is made by four transistors that ensure the separation between the two

when both are plugged. The switch prioritizes powering from the wall adapter to maximize power transfer.

The following figure shows the automatic power switch topology.

Figure 3-4. Automatic Power Switch Schematic

0603

LTST-C191KRKT

0603

GND

5V_MAIN5V_DC

SIA923AEDJ-T1-GE3

Q1A

8 4

SIA923AEDJ-T1-GE3

Q1B

SIA923AEDJ-T1-GE3

Q2A

8 4

SIA923AEDJ-T1-GE3

Q2B

GND

GNDGND

External Power Switch

0.1uF

10V

0402

0.1uF

10V

0402

C14

100k

0402

100k

0402

100uF

10V

1210

22uF

10V

1206

0.1uF

10V

0402

C10

10uF

25V

1206

C13

GND

120R

BLM18PG121SN1D

FB1

USB_VBUS_5V

TP4

SAMA7G54-EK

Function Blocks

and its subsidiaries

User Guide DS50003273A-page 10

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