2.2.3 DMIC clock switch
Four SPST switches (ADG711) are used to switch clocks coming from the main board as an input to different DMICs on the
8CH-DMIC board.
The following table describes the clock switches.
Table 22. DMIC clock switch matrix
Part identifier
Input clock
Output clock
U13
Four input clocks:
• CLK01
• CLK01
• CLK01
• CLK01 or CLK23 [depending
upon Jumper J5 setting]
Clock for:
• DMIC0
• DMIC1
• DMIC2
J7, J8, J9, J12
U16
Four input clocks:
• CLK01
• CLK01 or CLK23 [depending
upon Jumper J5 setting]
• CLK01 or CLK23 [depending
upon Jumper J5 setting]
• CLK45 [depending upon J14
jumper setting]
Clock for:
• DMIC3
• DMIC4
J6, J11, J12
U19
Four input clocks:
• CLK45 [depending upon J14
and J15 jumpers setting]
• CLK23 [Or CLK01 depending
upon J5 jumper setting]
• CLK67 [depending upon J14
and J15 jumpers setting]
• CLK23 [Or CLK01 depending
upon J5 jumper setting]
Clock for:
• DMIC5
• DMIC6
• DMIC7
J12, J10, J13, J12
U21
Four input clocks:
• CLK23 [Or CLK01 depending
upon J5 jumper setting]
• CLK23 [Or CLK01 depending
upon J5 jumper setting]
• CLK45 [depending upon J14
and J15 jumpers setting]
• CLK67 [depending upon J14
and J15 jumpers setting]
Clock for:
• DMIC 8
• DMIC 9
• DMIC 10
J13, J6, J12
2.2.3.1 Clock configuration jumper settings
The following table describes the different clock configurations depending upon J5, J14, and J15 jumper settings.
NXP Semiconductors
Functional Description
Eight-channel DMIC Board User Manual, Rev. 2, 15 March 2022
User Guide
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