BM20 datasheet(8/46 Pages) MICROCHIP

Part #	BM20

Description	Bluetooth짰 4.1 Stereo Audio Module

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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Stereo Module

 2015 Microchip Technology Inc.

Page 8

Preliminary Edition

BM23 pin diagram is shown in Figure 1-4. The pin descriptions are shown in Table 1-2

FIGURE 1-4: BM23 PIN DIAGRAM

TABLE 1‐2: BM23 PIN DESCRIPTION

Pin No.

Pin Type

Name

Description

1

I/O

P0_0

IO pin, default pull-high input (Note 1)

UART TX_IND

2

I/O

RFS0

I

2S interface: DAC Left/Right Clock

3

I/O

TFS0

I

2S interface: ADC Left/Right Clock

4

I/O

SLK0

I

2S interface: Bit Clock

5

I

DR0

I

2S interface: DAC Digital Left/Right Data

6

O

DT0

I

2S interface: ADC Digital Left/Right Data

7

I/O

P0_4

IO pin, default pull-high input

8

I

EAN

Embedded ROM/External Flash enable

High: ROM mode;

Low: External Flash mode

9

I

MIC1_P

Mic 1 mono differential analog positive input

10

I

MIC1_N

Mic 1 mono differential analog negative input

11

P

MIC_BIAS

Power output, microphone biasing voltage

12

P

VDDA

Power output, reserve for external cap to fine tune audio frequency

response, no need to add power to this pin

13

I

AIR

Stereo analog line in, R-channel

14

I

AIL

Stereo analog line in, L-channel

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