BM83 datasheet(43/74 Pages) MICROCHIP

Part #	BM83

Description	BM83 Bluetooth짰 Stereo Audio Module Data Sheet

PDF	74 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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43 / 74 page

Figure 6-5. Timing Sequence of Power-ON (NACK)

BAT_IN

SYS_PWR

1 ms

Power-

on/initial

idle

Power-on

MCU state

PWR (MFB)

BK_OUT/LDO31_VO

400 ms

RST_N

MCU sends UART command

UART

Command

NACK

Power-on ACK

ACK

BM83 response UART state

Set “Power-on Directly” boot

10 ms

20 ms

Retry, if ACK is not received

200 ms

any

Wait

Maximum: 5 times (1s)

Figure 6-6. Reset Timing Sequence in No Response From Module to Host MCU

PWR (MFB)

MCU sends

UART command

UART

Command

UART

Command

BM83 UART

If no

response

Reset

5000 ms

If the BM83 module does not respond to the host MCU’s UART command, the MCU re-sends the UART command. If

the BM83 module does not respond within 5 secs, the MCU forces the system to reset.

BM83

Application Information

Preliminary Datasheet

DS70005402A-page 43

BM83 Datasheet(PDF) 43 Page - Microchip Technology

BM83 Datasheet(HTML) 43 Page - Microchip Technology

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