BM20 datasheet(5/46 Pages) MICROCHIP

5 / 46 page

Stereo Module

 2015 Microchip Technology Inc.

Page 5

Preliminary Edition

1.1 INTERFACE DESCRIPTION

BM20 pin diagram is shown in Figure 1-3. The pin descriptions are shown in Table 1-1

FIGURE 1-3: BM20 PIN DIAGRAM

TABLE 1‐1: BM20 PIN DESCRIPTION

Pin No.

Pin type

Name

Description

I/O

P0_0

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

1. Slide Switch Detector, active low.

2. UART TX_IND, active low.

EAN

Embedded ROM/External Flash enable

H: Embedded; L: External Flash

P3_0

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

Line-in Detector (default), active low.

P2_0

IO pin, default pull-high input

System Configuration,

H: Application L: Baseband(IBDK Mode)

I/O

P1_5

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

1. NFC detection pin, active low.

2. Out_Ind_0

3. Slide Switch Detector, active low.

4. Buzzer Signal Output

I/O

P0_4

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

1. NFC detection pin, active low.

2. Out_Ind_0

SPKR

R-channel analog headphone output

AOHPM

Headphone common mode output/sense input.

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