Dfsdm Microphones Module (Mb1299); Description; Table 26. Dfsdm Channel Connection Between Mcu, Mb1331, And Mb1299; Figure 23. Mems Beamforming Microphone Module (Mb1299) - ST STM32H7B3I-EVAL User Manual

7.2

DFSDM microphones module (MB1299)

7.2.1

Description

A DFSDM Beam Forming microphone module (MB1299) can be connected to STM32H7B3LIH6QU DFSDM
interface through CN4.
MB1299 module embeds five DFSDM MEMS microphones STMicroelectronics MP34DT01TR-M:
• One microphone for detection in the center (CLK_0, DATA_0)
• Four other microphones for beamforming (CLK_1, DATA_1, and DATA_3)
DATA_1 / CLK_1
DATA_0 / CLK_0
DATA_3 / CLK_1
MB1299 function
1. Not connected by default (Conflict with OCSPI1_DQS)
UM2662 - Rev 1
Figure 23. MEMS beamforming microphone module (MB1299)
RED LED
_____
CLK_0 and CLK_1 : data valid when clock is high
_____
CLK_1 : data valid when clock is low
Table 26. DFSDM channel connection between MCU, MB1331, and MB1299
CLK_0
DATA_0
CLK_1
DATA_1
DATA_3
VCC_LED
DETECTn
DFSDM microphones module (MB1299)
MB1299
MB1331 function
DFSDM12_CKOUT
DFSDM12_DATIN1
DFSDM12_CKOUT
DFSDM1_DATIN3
DFSDM1_DATIN5
GPIO OUTPUT
GPIO INPUT
UM2662
_____
DATA_1 / CLK_1
DATA_3 / CLK_1
MCU pin
PB0
PB12
PB0
PC7
PB6
PB8
(2)
PC5
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