STA321MPL View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA321MPL

Scalable digital microphone processor

STMicroelectronics 

Registers

STA321MP

transitions. When ZCE = 0, volume updates occur immediately. Each channel also contains

an individual channel volume bypass. If a particular channel has volume bypassed via the

CnVBP = 1 register, then only the channel volume setting for that particular channel affects

the volume setting, the master volume setting will not affect that channel. Each channel also

contains a channel mute. If CnM = 1 a soft mute is performed on that channel.

0x00

0x01

0x02

…

0x4C

…

0xFE

0xFF

MV[7:0]

Volume offset from channel value

0 dB

-0.5 dB

-1 dB

…

-38 dB

…

-127 dB

Hardware channel mute

0x00

0x01

0x02

…

0x5F

0x60

0x61

…

0xFE

0xFF

0x00 to 0x06

0x07

…

0x0F

0x10

0x11

…

0x19

0x1A to 0x1F

CnV[7:0]

CnVT[4:0]

Volume

+48 dB

+47.5 dB

+47 dB

…

+0.5 dB

0 dB

-0.5 dB

…

-79.5 dB

Hardware channel mute

+10 dB

+9 dB

…

+1 dB

0 dB

-1 dB

…

-9 dB

-10 dB

Volume

32/50

Doc ID 022647 Rev 1

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