MICROCHIP TECHNOLOGY INC. BM23SPKXYC2A 사용자 설명서
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
1
I/O
P0_0
IO pin, default pull-high input (Note 1)
1. Slide Switch Detector, active low.
2. UART TX_IND, active low.
1. Slide Switch Detector, active low.
2. UART TX_IND, active low.
2
I
EAN
Embedded ROM/External Flash enable
H: Embedded; L: External Flash
H: Embedded; L: External Flash
3
I
P3_0
IO pin, default pull-high input (Note 1)
Line-in Detector (default), active low.
Line-in Detector (default), active low.
4
I
P2_0
IO pin, default pull-high input
System Configuration,
H: Application L: Baseband(IBDK Mode)
System Configuration,
H: Application L: Baseband(IBDK Mode)
5
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
1. NFC detection pin, active low.
2. Out_Ind_0
3. Slide Switch Detector, active low.
4. Buzzer Signal Output
6
I/O
P0_4
IO pin, default pull-high input. (Note 1)
1. NFC detection pin, active low.
2. Out_Ind_0
1. NFC detection pin, active low.
2. Out_Ind_0
7
O
SPKR
R-channel analog headphone output
8
O
AOHPM
Headphone common mode output/sense input.