Renesas RA6 Series Engineering Manual

Renesas VUI Reference Solution VOICE-RA6E1 Engineering Manual
VOICE-RA6E1 Engineering Manual Rev.1.0 Page
10
of 14
June 2022
8.3 Microphones
This board includes a pair of analog MEMS microphones (M2 & M3, ZillTek ZTS6053). These 2 analog
microphone signals are amplified by Renesas READ2302GSP OPAMP, then fed to RA6E1 ADC channels 0
& 1. A pair of digital I2S MEMS microphone (M1 & M4, ZillTek ZTS6672) is also provided, which is
connected to RA6E1 SPI0 & SPI1 channels separately. The physical distance between each 2 microphones
is 50mm to support beamforming applications.
Table 6. Analog MEMS Microphone left channel (M2) Port Assignments
MCU Port
MEMS microphone Pin
P000
1 – OUT
2 – GND
3 – GND
4 – GND
5 – VDD
Table 7. Analog MEMS Microphone right channel (M3) Port Assignments
MCU Port
MEMS microphone Pin
P001
1 – OUT
2 – GND
3 – GND
4 – GND
5 – VDD
Table 8. Digital I2S MEMS Microphone left channel (M1) Port Assignments
MCU Port
SPI0 Signal
MEMS microphone Pin
P205
SSLA0
1 – LRC (Word Select)
GND – for Select as left channel
2 – SELECT
GND
3 – GND
P111
RSPCK0
4 – BCLK
3.3V
5 – VDD
P109
MOSI0
6 – DATA
7 – CONFIG
Table 9. Digital I2S MEMS Microphone right channel (M4) Port Assignments
MCU Port
SPI1 Signal
MEMS microphone Pin
P103
SSLB0
1 – LRC (Word Select)
VDD – for Select as right channel
2 – SELECT
GND
3 – GND
P102
RSPCK1
4 – BCLK
3.3V
5 – VDD
P101
MOSI1
6 – DATA
7 – CONFIG
The Digital I2S MEMS Microphone right channel is multiplexed with QSPI Flash. To use the Digital
Microphone, please short pins 2-3 on J12~J14.
8.4 Audio out
A stereo headphone jack is connected to the MCU DAC. The DAC signals are connected through an
OPAMP. The device is Renesas READ2302GSP, in ultra-small 8 pins TSSOP packages.
Table 10. Headphone Jack Pin Assignments
MCU Port
Audio out Signal
Headphone Jack Pin
P014 (DA0)
VOUT1
1 (Sleeve)
VOUT2
2 (Mono signal)
VOUT2
3 (Mono signal)

Renesas RA6 Series Specifications

General

Brand	Renesas
Model	RA6 Series
Category	Motherboard
Language	English