Microchip Technology BM83 EVB - USB Connectivity; Switches and Push Buttons; Leds

3.1.2 USB Connectivity
The USB ports for BM83 EVB are:
• Micro-B USB port (J600 UART USB) – USB signals are converted to UART by the serial converter MCP2200,
which is connected to BM83 module.
• Micro-B USB port (J200 BT_USB) – USB signals are directly connected to the BM83 module.
• Type A USB port (P400- MCU_USB) – USB signals are directly connected to host MCU ( PIC32MX450F256L).
Note: To locate these USB ports available on the BM83 EVB, refer to Figure 2-1.
3.1.3 Switches and Push Buttons
The functions of the switches and push buttons on the BM83 EVB are:
• S400 – Switch to select between on-board PIC32 MCU or external Plug-in Module (PIM)
• SW200 – Power switch to switch between 5V_DC and 5V_USB
• SW300 – Mode selection switch for configuring BM83 module into Application mode or Test mode
• SW400 – Microcontroller to Bluetooth control switch
• SW401 – Reset button for the host MCU (MCU_RESET)
• SW402 – Microcontroller to Bluetooth control switch
• SW403 – Microcontroller to Bluetooth control switch
• SW700 – Reset button for BM83 module (RST_N)
• SW701 – Multifunction button (MFB)
• SW702 – Increase volume (VOL_UP)
• SW703 – Enter into pairing mode (PAIRING)
• SW704 – Play or pause the audio playback (PLAY/PAUSE)
• SW705 – Decrease volume (VOL_DN)
• SW707 – Skip the audio track forward (FWD)
• SW708 – Skip the audio track backward (REV)
• SW711 – Select button (SEL), turns on the system and puts the system into Pairing mode during Host MCU
mode application demonstration
Note: To locate these switches and push buttons available on the BM83 EVB, refer to Figure 3-2.
The following table provides the settings of mode selection switch (SW300) for configuring the BM83 module in
various operating modes.
Table 3-1. Mode Selection Switch (SW300) Details
Mode Pin Description
Test mode SW300 is placed in ON (P3_4: Low) position
Application mode SW300 is placed in OFF (P3_4: Floating) position
3.1.4 LEDs
All the on-board LEDs are categorized into three main types:
• Power LEDs:
– Red (D600 and D202)
– Green (D209 and D203)
• LEDs driven by the BM83 module:
– Red (D301)
– Blue (D300)
• Host MCU (PIC32) related LEDs:
– Green (D401-D407 )
– Green (D411)
Note: To locate these LEDs available on the BM83 EVB, refer to Figure 3-2.
BM83 EVB
Hardware
© 2019 Microchip Technology Inc.
User Guide
DS50002902A-page 12