Renesas RA4 Series Installation and operation manual

Rev.1.0 June 2022

Renesas Advanced (RA) Family

RA4 Series

User’ s Manual

www.renesas.com

All information contained in these materials, including products and product specifications, represents

information on the product at the time of publication and is subject to change by Renesas Electronics

Corp. without notice. Please review the latest information published by Renesas Electronics Corp.

through various means, including the Renesas Electronics Corp. website (http://www.renesas.com).

VOICE-RA4E1 Engineering Manual

Renesas VUI Reference Solution

Engineering Manual

 VOICE-RA4E1 Engineering Manual 
VOICE-RA4E1 Engineering Manual Rev.1.0 Page 
1
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June 2022 
Renesas VUI Reference Solution 
VOICE-RA4E1 Engineering Manual 
Contents 
Overview .................................................................................................................................3 
Kit Contents.............................................................................................................................3 
Kit Ordering Information...........................................................................................................3 
Kit Peripheral Features............................................................................................................4 
MCU Feature Support..............................................................................................................4 
Kit Architecture........................................................................................................................6 
1 System Block Diagram............................................................................................................................6 
2 Jumper Settings ......................................................................................................................................7 
2.1 Traditional Pin Header Jumpers............................................................................................................7 
2.2 Copper Jumpers....................................................................................................................................7 
MCU Port Mapping..................................................................................................................8 
Implementation Details............................................................................................................9 
1 QSPI NOR flash ......................................................................................................................................9 
2 PMOD......................................................................................................................................................9 
3 Microphones..........................................................................................................................................10 
4 Audio out ...............................................................................................................................................10 
5 LEDs......................................................................................................................................................10 
6 Buttons ..................................................................................................................................................11 
7 Debug....................................................................................................................................................11 
8 Power ....................................................................................................................................................13 
9 USB .......................................................................................................................................................13 
Certifications..........................................................................................................................14 
Revision History............................................................................................................................14 
 

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Figures 
Figure 1. VOICE-RA4E1 Kit Contents............................................................................................................... 3 
Figure 2. System Block Diagram....................................................................................................................... 6 
Figure 3. Copper Jumpers................................................................................................................................. 7 
Figure 4. PMOD connector................................................................................................................................ 9 
Figure 5. VOICE-RA4E1 Power Block Diagram.............................................................................................. 13 
 
Tables 
Table 1. Default Jumper Settings ..................................................................................................................... 7 
Table 2. Default Copper Jumper Settings ........................................................................................................ 8 
Table 3. MCU Port Assignments ...................................................................................................................... 8 
Table 4. QSPI Flash Port Assignments............................................................................................................ 9 
Table 5. PMOD Port Assignments (J15) ........................................................................................................... 9 
Table 6. Analog MEMS Microphone left channel (M2) Port Assignments ...................................................... 10 
Table 7. Analog MEMS Microphone right channel (M3) Port Assignments.................................................... 10 
Table 8. Digital I2S MEMS Microphone left channel (M1) Port Assignments ................................................. 10 
Table 10. Headphone Jack Pin Assignments.................................................................................................. 10 
Table 11. User LED Port Assignments............................................................................................................ 10 
Table 12. User Button Port Assignment (S1) .................................................................................................. 11 
Table 13. Jumper Connection Summary for Different Debug ......................................................................... 11 
Table 14. Debug USB Connector.................................................................................................................... 11 
Table 15. 10-pin JTAG/SWD Connector (J8)................................................................................................ 12 
Table 16. 20-pin JTAG/SWD Connector (J9)................................................................................................ 12 
Table 17. Debug Port Signal Assignments...................................................................................................... 12 
Table 18. USB Full Speed / USB Type-C Signal Assignments (J1)................................................................ 13 
 
 

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1. Overview

VOICE-RA4E1 is an edge voice recognition evaluation kit designed to be used by Ecosystem Partners,

Application Engineers, Field Application Engineers, and for Business Development opportunities. The

primary purpose is to evaluate the functionality of projects developed by Ecosystem Partners, and to

facilitate the development of additional partner projects. The kit design to use the RA4E1 MCU with QFN

48pin package as the core logic device, with QSPI flash, OPAMP and power devices chosen from the

Renesas product portfolio.

2. Kit Contents

The following components are included in the kit:

1. VOICE-RA4E1 board

2. Micro USB device cable (type-A male to micro-B male)

Figure 1. VOICE-RA4E1 Kit Contents

3. Kit Ordering Information

VOICE-RA4E1 kit orderable part number: TW001-VUIA4E1POCZ

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4. Kit Peripheral Features

Following is a list of the specific features that have been implemented:

•QSPI: One QSPI flash memory device, Dialog AT25SF641B-MHB-T, 64M-bit (8MB).

•PMOD: 1 Digilent PMOD connectors, supporting UART, SPI and I2C configurations.

•Microphones: 1 I2S MEMS digital microphones and 2 MEMS analog microphones, distance between

each pair of microphones is 50mm which is suitable for beamforming applications.

•Audio out: One stereo audio headphone jack supporting mono output on both channels.

•LEDs: Five LEDs, D2 (Red), D3 (Green) and D4 (Blue) configurable by user, D5 (Blue) as a 3.3V power

indicator, D8(Green) as a JLOB (J-LINK on board) indicator.

•Buttons: One RESET button (S2), and one USER button (S1).

•Debug: J-Link On-Board debug interface, supporting JTAG or SWD debug port.

•USB: Micro USB-B (J6) for power input and J-Link On-Board function, USB-C (J1) for power input and

RA4E1 USB Full Speed port as a USB device.

•Form Factor: 7.5 x 6 cm

5. MCU Feature Support

The RA4E1 MCU supports a full array of peripheral functions. The published features of the MCU are listed

below. Features highlighted in BOLD text are directly supported by the kit hardware for voice applications.

•Arm Cortex-M33 Core with Floating Point Unit (FPU)

•Armv8-M architecture with DSP instruction set

•Maximum operating frequency: 100 MHz

•Support for 4-GB address space

•On-chip debugging system: JTAG, SWD

•Boundary scan and Arm Memory Protection Unit (Arm MPU)

•Memory

•Up to 512KB code flash memory

•8-KB data flash memory (100,000 program/erase cycles minimum)

•Up to 128KB SRAM

•1KB Standby SRAM

•Flash Cache (FCACHE)

•Memory Protection Units (MPU)

•Memory Mirror Function (MMF)

•128-bit unique ID

•Connectivity

•USB 2.0 Full-Speed (USBFS) module

•On-chip transceiver with voltage regulator

•Serial Communications Interface (SCI) with FIFO × 4

•Serial Peripheral Interface (SPI) × 1

•I2C bus interface (IIC) × 1

•Quad Serial Peripheral Interface (QSPI)

•Analog

•7 channel 12-bit A/D Converter (ADC12) with sample-and-hold circuits

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•12-bit D/A Converter (DAC12) × 1

•Timers

•General PWM Timer 32-bit (GPT32) × 2

•General PWM Timer 16-bit (GPT16) × 2

•Asynchronous General-Purpose Timer (AGT) × 5

•Safety

•FACI command protection by FENTRYR register

•Flash memory is protected by FWEPROR register

•The user area is protected by the block protect setting

•Error is detected when unintended commands or prohibited settings occur. The FACI command is

not accepted after an error detection.

•The start-up area select function allows customer to safely update the boot firmware. The size of the

start-up area is 8 KB.

•System and Power Management

•Low power modes

•Battery backup function (VBATT)

•Realtime Clock (RTC) with calendar and VBATT support

•Event Link Controller (ELC)

•Data Transfer Controller (DTC)

•DMA Controller (DMAC) × 8

•Power-on reset

•Low Voltage Detection (LVD) with voltage settings

•Watchdog Timer (WDT)

•Independent Watchdog Timer (IWDT)

•Security and Encryption

•ARMv8-M TrustZone security

•Device lifecycle management

•Debug access level

•Key injection

•Secure pin multiplexing

•Secure Crypto Engine 9 (SCE9)

•Symmetric algorithms: AES

•Asymmetric algorithms: RSA, ECC, and DSA

•Hash-value generation: SHA224, SHA256, GHASH

•128-bit unique ID.

•Multiple Clock Sources

●Main clock oscillator (MOSC) (8 to 24 MHz)

●Sub-clock oscillator (SOSC) (32.768 kHz)

●High-speed on-chip oscillator (HOCO) (16/18/20 MHz)

●Middle-speed on-chip oscillator (MOCO) (8 MHz)

●Low-speed on-chip oscillator (LOCO) (32.768 kHz)

●IWDT-dedicated on-chip oscillator (15 kHz)

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●Clock trim function for HOCO/MOCO/LOCO

•General-Purpose I/O Ports

•5V tolerance, open drain, input pull-up, switchable driving ability

•Operating Voltage

•VCC: 2.7 to 3.6 V

6. Kit Architecture

6.1 System Block Diagram

Figure 2. System Block Diagram

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6.2 Jumper Settings

Two types of jumpers are provided on the VOICE-RA4E1 board.

1. Traditional pin header jumpers copper jumpers

2. Copper jumpers (trace-cut type and solder bridge type)

6.2.1 Traditional Pin Header Jumpers

These jumpers are traditional small pitch jumpers that require an external shunt to open/close them. The

traditional pin jumpers on the VOICE-RA4E1 board are 2.54mm pitch headers and require compatible

2.54mm shunt jumpers.

Default Jumper Configuration

The following table describes the default settings for each jumper on the VOICE-RA4E1 board. This includes

copper jumpers (Ex designation) and traditional pin jumpers (Jx designation.)

Functional details for many of the listed jumpers may be found in sections associated with each functional

area of the kits.

Table 1. Default Jumper Settings

Location

Default Open/Closed

Function

Open

USB Boot mode : Close to configures the RA4E1 MCU enter USB

boot mode, code can be download through J1 USB TYPE-C

connector.

Short

For MCU current measurement, remove this jumper wire and serial

with a current meter to measure MCU current.

Open

Short with a jumper wire to set on board debug RA4M2 MCU(U8) in

RESET for disable on board debug.

J16

open

Short with jumper wire to route I2C SDA signal to J15 PMOD

connector pin 4.

6.2.2 Copper Jumpers

Copper jumpers are of two types, designated trace-cut and solder-bridge.

A trace-cut jumper is provided with a narrow copper trace connecting its pads. The silk screen overlay

printing around a trace-cut jumper is a solid box. To isolate the pads, cut the trace between pads adjacent to

each pad, then remove the connecting copper foil either mechanically or with the assistance of heat. Once

the etched copper trace is removed, the trace-cut jumper is turned into a solder-bridge jumper for any later

changes.

A solder-bridge jumper is provided with two isolated pads that may be joined together by one of three

methods:

⚫Solder may be applied to both pads to develop a bulge on each and the bulges joined by touching a

soldering iron across the two pads.

⚫A small wire may be placed across the two pads and soldered in place.

⚫A SMT resistor, size 0805, 0603, or 0402, may be placed across the two pads and soldered in place. A

zero-ohm resistor shorts the pads together.

For any copper jumper, the connection is considered closed if there is an electrical connection between the

pads (default for trace-cut jumpers.) The connection is considered open if there is no electrical connection

between the pads (default for the solder-bridge jumpers.)

Figure 3. Copper Jumpers

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Table 2. Default Copper Jumper Settings

Location

Default Open/Closed

Function

Closed

WS output to I2S digital microphone

Closed

SSL input for SPI0

Closed

SCK output to I2S digital microphone

Closed

SCK input for SPI0

Closed

MOSI for I2S digital microphone left channel

Closed

ADC0, Analog microphone left channel

Closed

ADC1, Analog microphone right channel

Closed

DA out to OPAMP, audio out

Closed

P201/MD signal, cut it then the J8, J9 can be debug out function

7. MCU Port Mapping

Here are the port and pin assignments for the kit.

Table 3. MCU Port Assignments

Port

Assigned Function(s)

P000

Analog microphone, left channel

P001

Analog microphone, right channel

P002

Test point 4 (TP4)

P013

Test point 7 (TP7)

P014

Audio out DAC

P015

Test point 8 (TP8)

P100

If configure as QSPI, it is QSPI CLK signal for QSPI flash.

If configure as PMOD, it can be RXD/SCL/MISO signal.

P101

If configure as QSPI, it is QSPI DQ1 signal for QSPI flash.

If configure as PMOD, it can be TXD/SDA/MOSI signal.

P102

If configure as QSPI, it is QSPI DQ0 signal for QSPI flash.

If configure as PMOD, it can be NC/NC/SCK signal.

P103

If configure as PMOD, it can be CTS_RTS/NC/SS signal.

P104

GPT1 output for SCK to I2S D-MIC

P108

Debug, SWDIO for SWD or TMS for JTAG

P109

MOSI for I2S digital microphone left channel, when debug, it is TDO for JTAG

P110

Debug, TDI for JTAG, or PMOD GPIO3

P111

SPICLK input

P112

SPI SS input

P200

NMI, pull-high with 10K

P201/MD

Boot Mode, The MCU enter SCI and USB boot mode if the MD pin is held low on release

the reset signal, it is for download code to MCU flash memory.

or PMOD GPIO1

P206

PMOD GPIO2

P207

QSPI_CS# for QSPI flash

P212/EXTAL

LED3, user LED, blue color

P213/XTAL

LED2, user LED, green color

P300

Debug, SWCLK for SWD or TCK for JTAG

P301

WS output to I2S digital microphone

P302

PMOD, can be GPIO or IRQ5

P402

User switch(S1), also IRQ4

P407

USB VBUS, USB cable connection monitor pin

P408

JLOB VCOM TXD

P409

JLOB VCOM RXD

P500

LED1, user LED, red color

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8. Implementation Details

8.1 QSPI NOR flash

There is one QSPI NOR Flash on board. The device is Dialog AT25SF641B-MHB-T, 64 Mbit (8 Mbyte) in a

8-pad Ultra-Thin DFN (5 x 6 x 0.6mm) package. The QSPI port of RA4E1 is configured as Fast Read Dual

I/O mode on this kit.

Table 4. QSPI Flash Port Assignments

MCU Port

QSPI Signal

QSPI Pin

P100

CLK

P207

Chip Select

P102

DQ0

P101

DQ1

8.2 PMOD

One PMOD type 2A/3A/6A connectors (2x6 pin, dual row, right angle socket) is included. If the RA4E1 SCI0

has been configured as Simple I2C, please insert a jumper on header J16 to route SDA signal to PMOD

connector pin 4 for meet PMOD 6A pin definition.

Table 5. PMOD Port Assignments (J15)

MCU Port

PMOD Type

2A Signal

(SPI)

PMOD Type

3A Signal

(UART)

PMOD Type

6A Signal

(I2C)

PMOD connector Pin

P103

CTS_RTS

P101

MOSI

TXD

P100

MISO

RXD

SCL

P102

SCK

SDA(P101)

GND

+3.3V

P302

INT

P303

GPIO

P304

GPIO

P208

GPIO

GND

+3.3V

Figure 4. PMOD connector

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