Schematic Diagram
5
4
3
2
1
6
D
C
A
B
D
C
A
B
5
4
3
2
1
6
Bluetooth module connector section
BT_LRCLK
BT_LRCLK
BT_DAT
BT_DAT
BT_BCLK
BT_BCLK
BT_RX
BT_RX
BT_TX
BT_TX
BT_RST
BT_RST
+3.3VBT
Q
780
S
-13A
1A
33-
U5T
1U3
ON
/OFF
1
G
ND
2
SSC
3
VI
N
4
V
O
UT
5
106K
C780
16V
NM
226M
C781
6.
3V
NM
R780
4.
7k
NM
103K
C782
50V
NM
TP1
TP4
TP5
TP6
TP9
TP10
TP11
T
P
17
T
P
18
T
P
19
T
P
20
T
P
21
T
P
22
T
P
24
T
P
25
TP30
TP31
TP32
TP33
TP34
TP35
TP36
TP37
TP38
TP39
TP40
TP41
TP101
TP102
TP103
TP104
TP105
TP106
TP107
BLM15PX181SN1D
L780
BLM15PX181SN1D
L781
NM
BLM15PX181SN1D
L782
50V
103K
C787
16V
104K
C786
50V
103K
C789
NM
16V
104K
C788
NM
16V
104K
C790
50V
103K
C791
50V
103K
C793
NM
16V
104K
C792
NM
R783
0
NM
16V
104K
C794
R785
22
R786
22
R787
100
R788
10k
R789
10k
NM
D780
S
E
C1403C
NM
D781
S
E
C1803C
R791
220
R790
220
NM
R792
0
TP108
TP109
TP14
L783
L784
BK1608LL241-T
L785
TP28
R784
220
R793
220
R794
220
Q781
HRM1034
NC
1
GND1
2
WAKE
3
PIO1
4
PIO2
5
PIO3
6
UART_RX
7
UART_TX
8
PIO11
9
PIO6
10
PIO7
11
PIO14
12
PIO15
13
PIO16
14
PIO17
15
GND2
16
S
DA
17
S
CL
18
WP
/P
IO1
8
19
LE
D_0
20
LE
D_1
21
P
IO5
22
V
CC_I
O
23
P
IO1
2
24
V
RE
G
O
UT
_M
V
25
R
ESET
26
GND3
27
VCHG_IN
28
BAT_IN
29
VREGOUT_HV
30
PIO4
31
MIC_CIAS
32
MIC_1P
33
MIC_1N
34
MIC_2N
35
MIX_2P
36
LINE_IN_L
37
LINE_IN_R
38
SPK_LP
39
LRVCM
40
SPK_RP
41
GND4
42
R795
0
R796
100
NM
50V
102K
C795
NM
MODEL NO. TX-SR343/444,HT-R494 SCHEMATIC DIAGRAM (PART-14) Bluetooth module Connector Section
BARF-1764
7. +3.3VBT
8. GND
6. RESET
1. UART_TX
2. UART_RX
9. SHIELD_GND
BLUETOOTH MODULE
5. LRCLK
4. DATA
3. BCLK
24.
25.
26.
R790/R791:
D780/D781:
L783-L785:
P780B Pin Layout
Reset:Hi active
