10 Applications, Implementation, and Layout
Note
Information in the following applications sections is not part of the TI component specification,
and TI does not warrant its accuracy or completeness. TI’s customers are responsible for
determining suitability of components for their purposes, as well as validating and testing their design
implementation to confirm system functionality.
10.1 Application Information
10.1.1 Typical Application – WL1835MODGB Reference Design
shows the TI WL1835MODGB reference design.
The value of antenna matching components
is for WL1835MODCOM8B
The value of antenna matching components
is for WL1835MODCOM8B
WLAN/BT Enable Control.
Connect to Host GPIO.
For Debug only
Connect to Host HCI Interface.
Connect to Host BT PCM Bus.
Connect to Host SDIO Interface.
For Debug only
For Debug only
For Debug only
For Debug only
ANT1- WL_2.4_IO2/BT
ANT2- WL_2.4_IO1
WL_IRQ_1V8
WL_SDIO_D3_1V8
WL_SDIO_CLK_1V8
WL_SDIO_D2_1V8
WL_SDIO_D1_1V8
WL_SDIO_D0_1V8
WL_SDIO_CMD_1V8
BT_HCI_RTS_1V8
BT_HCI_CTS_1V8
BT_AUD_CLK
BT_AUD_IN
BT_AUD_OUT
BT_AUD_FSYNC
WL_RS232_TX_1V8
WL_RS232_RX_1V8
BT_HCI_TX_1V8
BT_HCI_RX_1V8
BT_EN
WLAN_EN
SLOW_CLK
VBAT_IN
VIO_IN
VIO_IN
VIO_IN
C4
0.1uF
0402
TP6
J6
U.FL-R-SMT(10)
U.FL
1
2
3
U1
WL1835MODGB
E-13.4X13.3-N100_0.75-TOP
G
P
IO
9
3
G
P
IO
1
2
5
G
P
IO
1
1
2
G
P
IO
1
0
4
GND
17
V
IO
3
8
V
B
A
T
4
7
E
X
T_32K
36
BT_AUD_FSYNC
58
BT_AUD_IN
56
BT_AUD_OUT
57
BT_AUD_CLK
60
W
L
_
S
D
IO
_
D
2
1
2
W
L
_
S
D
IO
_
C
L
K
8
W
L
_
S
D
IO
_
D
3
1
3
W
L
_
S
D
IO
_
D
0
1
0
W
L
_
S
D
IO
_
D
1
1
1
W
L
_
S
D
IO
_
C
M
D
6
BT_HCI_RTS
50
BT_HCI_RX
53
BT_HCI_TX
52
BT_HCI_CTS
51
G
N
D
1
6
GPIO_4
25
GPIO_2
26
GPIO_1
27
B
T
_
E
N
_
S
O
C
4
1
W
L
A
N
_
IR
Q
1
4
W
L
A
N
_
E
N
_
S
O
C
4
0
B
T
_
U
A
R
T
_
D
B
G
4
3
W
L
_
U
A
R
T
_
D
B
G
4
2
GND
G13
GND
G14
GND
G15
GND
G16
GND
G9
GND
G10
G
N
D
4
8
GND
G11
GND
G12
V
B
A
T
4
6
GND
28
GND
G1
GND
G2
GND
G3
GND
G4
GND
G5
GND
G6
GND
G7
GND
G8
RF_ANT1
32
GND
64
G
N
D
1
GND
20
RESERVED1
21
RESERVED2
22
G
N
D
3
7
GND
19
RESERVED3
62
GND
G17
GND
G18
GND
G19
GND
G20
GND
G21
GND
G22
GND
G23
GND
G24
GND
G25
GND
G26
GND
G27
GND
G28
GND
G29
GND
G30
GND
G31
GND
G32
GND
G33
GND
G34
GND
G35
GND
23
GND
59
G
N
D
3
4
GND
29
G
N
D
7
RF_ANT2
18
GND
49
G
N
D
9
GND
31
G
N
D
3
5
G
N
D
1
5
GND
55
G
N
D
4
5
G
N
D
4
4
GND
30
GND
24
GND
63
GND
61
G
N
D
3
9
G
N
D
3
3
GND
54
GND
G36
OSC1
1V8 / 32.768kHz
OSC-3.2X2.5
EN
1
VCC
4
OUT
3
GND
2
R20
NU
RES1005
TP10
TP7
TP2
TP13
TP5
TP8
C12
NU
0402
C5
10pF
0402
ANT2
ANT016008LCD2442MA1
ANT-N3-1.6X0.8MM-B
5G
B
2
FEED
A
2.4G
B
1
C11
1.2pF
0402
C7
NU_10pF
0402
TP4
C1
1uF
0402
L1
1.1nH
0402
C3
0.1uF
0402
TP3
C6
10pF
0402
TP11
J5
U.FL-R-SMT(10)
U.FL
1
2
3
C9
2.2pF
0402
C10
NU_0.3pF
0402
R6
0R
0402
ANT1
ANT016008LCD2442MA1
ANT-N3-1.6X0.8MM-A
5G
B
2
FEED
A
2.4G
B
1
C13
8pF
0402
C8
NU_10pF
0402
L2
1.5nH
0402
TP12
C2
10uF
0603
TP1
C14
4pF
0402
Figure 10-1. TI Module Reference Schematics
WL1801MOD, WL1805MOD, WL1831MOD, WL1835MOD
SWRS152N – JUNE 2013 – REVISED APRIL 2021
32
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