Hardware
2016 Microchip Technology Inc.
Advance Information
DS70005274A - Page 19
Table 2-2
details the signals and button connections of the SW46/SW47 switch to the
BM64 module and the external MCU/DSP.
2.1.4
LEDs
The functions of three LEDs are listed as follows:
• LED1 – Indicates the Bluetooth connection status (UI configuration dependent)
• LED2 – Indicates the Bluetooth connection status (UI configuration dependent)
• LED3 – Charging indication LED (default setting is disabled)
TABLE 2-2:
SWITCH SW46/SW47 DETAILS
Mode
SW46/SW47 Switch position
Pin Definition
On-board MCU
(PIC18F85J10) and DSP
audio amplifier (YDA174)
signals connection to the
BM63 module (default)
SW46
1: ON (NFC trigger to MCU)
2: OFF (TXIND to MCU)
3: ON (RST_N to MCU)
4: ON (HCI_TXD to MCU)
5: ON (HCI_RXD to MCU)
6: ON (MFB controlled by
MCU)
SW47
1: ON (DT0 to DSP)
2: ON (SCLK0 to DSP)
3: ON (RFS0 to DSP)
4: ON (NC)
External MCU and DSP
audio amplifier connection
SW46
1: OFF (NFC trigger)
2: OFF (TXIND)
3: OFF (RST_N)
4: OFF (HCI_TXD)
5: OFF (HCI_RXD)
6: OFF (MFB)
SW47
1: OFF (DT0)
2: OFF (SCLK0)
3: OFF (RFS0)
4: OFF (NC)
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