User Manual

Bluetooth Audio Module BTM-68D
Shenzhen TTK Technology CO.,LTD
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11.15
10 PIO[5]
PIO port
Programmable input/output line
11 1V8
1.8V POWER
Positive supply for 1.8V regulated output
12 GND
GND Ground
13 GND GND
ground
14 PIO[4]
PIO port
Programmable input/output line
15 RST# Reset
L
og
ic low res
et
16 MOSI SPI interface
SPI data i
nput
17 CLK SPI interface
SPI Clo
ck
18 CSB SPI interface
Chi
p
select for SPI
19 MISO SPI interface
SPI data out
put
20 GND GND
Ground
21 LED[0]
Status
LED driv
er
22 LED[1] Status
LED driv
er
23 VREG
POWER ON/OFF
Moudle
po
wer on/off active hi
gh
24
BAT_IN Power Input
Lithium ion/polymer battery positive terminal.
25 5V+ 5V-charger
Lithium ion/polymer battery charger input
26 MIC_BIAS
MIC power Microphone bias
27 MIC+
MIC input Microphone input
28 AGND
AGND Analogue ground
29 L-
L- Speaker output, channel L negative
30 L+
L+ Speaker output, channel L positive
31 R- R-
Speaker output, channel R negative
32 R+ R+
Speaker output, channel R positive