User's Manual

WiBear11n Data Sheet
Version 1.18
Copyright © 2013 lesswire AG www.lesswire.com Page 14 of 20
Reference Design
Overview
Reference design shows how to connect a WiBear11n module to the host controller. WLAN and Bluetooth
(BT3.0 HS + EDR) may be connected to the host simultaneously over the SDIO bus. The layout is equipped
with the possibility to either use an onboard antenna or an external antenna connected via coaxial connector by
means of setting of jumper R7 or R8. Host interface voltage can also be changed by jumper J6. The ready-
made reference design is available as WiBear11n Evaluation Kit from Lesswire AG.
Schematic Diagram
C1
100nF
D3
Blue
D1
Green
D2
Orange
J2
IN
1
EN
3
GND
2
NC
4
OUT
5
U2
MCP1824T-1802E
DAT2
9
DAT3
1
CMD
2
GND
3
VDD
4
CLK
5
GND
6
DAT0
7
DAT1
8
SDIO
1 2
3 4
5 6
7 8
9 10
12
14
11
13
J1
R1
360
R2
620
C2
10uF
3V3
R3
3.6k
3V3
MAIN
J3
AUX
LED_1LED_0
3V3
1V83V3
RESET
SD_D2
SD_D3
CMD
CLK
SD_D0
SD_D1
3V3
3V3
SD_D2
SD_D3
CMD
CLK
SD_D0
SD_D1
SD_D2
SD_D3
CMD
CLK
SD_D0
SD_D1
SDIO
Assembly
Option
Description
WLAN and Bluetooth at the same antenna terminal (U1:Pin 44)
WLAN and Bluetooth at the different antenna terminals
1
2
J3
"Supply"
"WLAN" "BT"
DNP
+
R7
0
U1
WiBear11n-DF1
(U1:Pin 29 and U1:Pin 26 correspondingly) for uAP functionality
WiBear11n-SF1
RESET
WiBear11n-DF2
WiBear11n-SF2
SLP_CLK
SLP_CLK
C3
10uF
RESET
1
MR
3
GND
2
CT
4
SENSE
5
VDD
6
U3
TPS3808G30
LED_0
LED_1
1V8
J6
J4
R6
47K
CFG
CFG
A1
Dual Band
Antenna
J5
R4
10K
C4
100nF
3V3 VIO
R5
10K
RESET
1V8
3V3
VIO
J7
J8
R8
DNP
20mS Reset Pulse
C7
2.2pF
L1
6.8nH
L2
12nH
EN
1
GND
2
OUT
3
VCC
4
Y1
32.768kHz
C6
100nF
10mS Start Up Time
SD_D2
11
SD_D3
12
SD_CMD
13
SD_CLK
14
SD_D0
15
SD_D1
16
RESET
10
PD
9
3V3
4
VIO
5
1V8
6
GND
1
GND
7
SLP_CLK
19
LED_1
3
PCM_DOUT
23
PCM_CLK
22
GND
8
LED_0
2
CFG
20
PCM_SYNC
21
GND
17
ANT2
26
GND
18
PCM_DIN
24
ANT1
29
GND
25
GND
27
GND
28
GND
30
U1
WiBear11n
C5
DNP
Antenna matching components (L1, C7, L2)
values depend on antenna type,
layout, PCB material and PCB thickness
1
2
3
1
2
3
Figure 11: Evaluation Kit outlook
Figure 12: Evaluation kit schematic diagram