7.14
microSD
™
card
A slot (CN13) for microSD
™
card (UHS-I supported) is available on the STM32N6570-DK board and is connected
to the SDMMC2 interface of STM32N657X0H3Q.
The uSD_Detect signal (PN12) manages the microSD
™
card detection. When a microSD
™
card is inserted into
the slot, the uSD_Detect signal level is LOW, otherwise, it is HIGH.
The SD_SEL signal (connected to PO5) manages the power selection (1.8/3.3 V).
The system reset (NRST) and PWR_SD_EN(PQ7) signals enable or disable the power switch. PWR_ON pulls up
these two signals.
7.15
Audio
STM32N6570-DK features audio characteristics such as:
• An audio codec with an SAI interface and a 3.5 mm audio jack connector (for stereo earphones and one
analog microphone)
• A digital MEMS microphone and microphone daughterboard connector
7.15.1 Audio codec
An audio codec is driven through the I2C2 interface (100 kHz). The I
2
C write/read address is 0x34/0x35.
An SAI interface transfers audio data. A dedicated I/O (Audio_INT, PB1, active LOW) is used for the IRQ interrupt.
Warning: The SAI signals are multiplexed with trace signals.
7.15.2 MEMS microphone
A digital MEMS microphone (U13) is ON on the bottom side of the STM32N6570-DK main board.
A microphone daughterboard connector (CN5) is implemented close to U13, to support the STEVAL-
MIC008A MEMS microphone daughterboard. Only two microphones (left and right channels) on these boards can
be supported due to only one data signal on CN5.
By default, U13 is connected to the data signal of SAI_PDM on the STM32N657X0H3Q microcontroller. When a
microphone
daughterboard is plugged into CN5, the data signal is switched to the microphone daughterboard
automatically (through U14).
Note that a second reserved data pin (PE12) in CN5 pin5 is multiplexed with the ARDUINO
®
connector.
7.16
Camera module
STM32N6570-DK features a CSI camera module (with ToF and IMU) (MB1854) through CN14.
Refer to B-CAMS-IMX for more details.
This camera module daughterboard provides a compelling hardware set to handle several computer vision
scenarios and use cases. It features a high-resolution 5‑Mpx CMOS RGB image sensor, an inertial motion unit,
and a ToF sensor. It can be used with any STM32 board featuring a MIPI CSI-2
®
interface with a 22‑pin FFC
connector to enable full-featured computer vision on STM32 microcontrollers and microprocessors easily.
7.17
ARDUINO
®
STM32N6570-DK features ARDUINO
®
Uno R3.
Note: The analog level limit is 1.8 V while digital I/O is up to 3.3 V in the MCU pins. Thus, to avoid any risk of
damaging the MCU pins, an amplifier is used to down the voltage level for each analog pin.
This implements two functions (analog and digital) in the ARDUINO
®
pins (A0–A5), connecting two pins (one
analog and one digital
I/O) to each ARDUINO
®
pin (A0–A5). The basic logic is shown in Figure 11.
Note: There is a possibility to get the wake
‑
up feature for D4 through SB44 (OFF by default).
UM3300
Hardware layout and configuration
UM3300 - Rev 1
page 18/49
To Next Page
