The WiBear11n industrial universal module is
targeted for integration into different OEM
products. The module is designed for both
simultaneous and independent operation of the
following: 802.11a/b/g/n payload data rates for
Wireless Local Area Network (WLAN), Bluetooth
3.0+High Speed (HS) and Bluetooth 2.1+EDR. It
provides a complete end-to-end solution for lowpower applications. It includes an integrated
MAC/Baseband processor and RF front-end
components and can connect to a host processor
through SDIO interface. The WiBear11n modules
are offered in four versions (see ordering
information and block diagram). Host drivers for
common operating systems such as Linux and
Windows 7 are available. The modules are radio
type approved for Europe (CE), US (FCC) and
Industry Canada (IC) (pending).
Figure 1: Physical outlook
Applications
• WLAN and Bluetooth networks
• Audio/video devices and accessories
• Access to laptops, mobile phones etc.
• Automotive and industrial networking
• Home / building automation
Key Features
• Standards: IEEE 802.11a/b/g/n/e/i/h/d/k/r/w
• WLAN 802.11a/b/g/n station and micro access point operation (up to 8 clients supported)
• Support of Wi-Fi direct mode
• 802.11n 1x1 SISO
• 802.11 PHY data rates up to 72 Mbps (20 MHz channel) and up to 150 Mbps (40 MHz channel)
• Hardware 64- and 128-bit encryption AES engine performance
• Embedded security supplicant
• WAPI encryption is supported by hardware
• Background scan mode
• Bluetooth 3.0 + HS (High Speed)
• Bluetooth 2.1 + EDR (backward compatibility)
• Wide temperature operation range -40ºC to +85ºC
• Compact 14.8mm x 14.8mm footprint, surface mounting
WiBear11n-SF1 Single band WLAN (802.11 b/g/n, 2.4 GHz only) and Bluetooth module. Module has one
joint antenna connector for WLAN and Bluetooth operation (see block diagram).
WiBear11n-SF1/-DF1 is recommended for cost effective AP solution, AP without or rare
Bluetooth traffic or cost effective station with one system antenna.
WiBear11n-SF2 Single band WLAN (802.11 b/g/n, 2.5 GHz only) and Bluetooth module. Module has
separated antenna connectors for WLAN and Bluetooth operation (see block diagram).
Overall performance (throughput) is maximized for AP mode with simultaneous Bluetooth
traffic. Two system antennas are required (one for WLAN and one for Bluetooth) with 30
dB or better isolation between antennas (orthogonal oriented antennas with more than
50…60 mm. distance between). May be recommended for higher performance of AP.
WiBear11n-DF1 Dual band WLAN (802.11 a/b/g/n, 2.5 and 5 GHz) and Bluetooth module with one joint
antenna connector for WLAN and Bluetooth. Similar to WiBear11n-SF1.
WiBear11n-DF2 Dual band WLAN (802.11 a/b/g/n, 2.5 and 5 GHz) and Bluetooth module which has
separated antenna connectors for WLAN and Bluetooth. Similar to WiBear11n-SF2.
Note: For maximum throughput during simultaneous WLAN (AP) and Bluetooth operation, the Bluetooth
Coexistence Arbiter (BCA) settings should be optimized by the host system software.
1 GND Ground Ground
2 LED_0 I/O LED output (GPIO_1 of Radio/Baseband processor), WLAN activity 1
3 LED_1 I/O LED output (GPIO_17 of Radio/Baseband processor), Bluetooth activity 1
4 3V3 Power 3.3V Power supply (3.0V...3.6V)
5 VIO Power VIO Supply (1.8V or 3.3V)
6 1V8 Power 1.8V Supply (1.7V...1.9V)
7 GND Ground Ground
8 GND Ground Ground
9 PDn I Full power down (active low), has internal pull-up to VIO pin
10 RESETn I Reset (active low), has weak internal pull-up to VIO pin
11 SD_D2 I/O SDIO Data line bit [2]
12 SD_D3 I/O SDIO Data line bit [3]
13 SD_CMD I/O SDIO Command
14 SD_CLK I SDIO Clock input
15 SD_D0 I/O SDIO Data line bit [0]
16 SD_D1 I/O SDIO Data line bit [1]
17 GND Ground Ground
18 GND Ground Ground
19 SLEEP_CLK I Clock input for external sleep clock source (32.768kHz) 2
20 CFG I/O Configuration pin 3
21 PCM_SYNC I/O GPIO_14 of Radio/Baseband processor, output if master, input if slave
22 PCM_CLK I/O GPIO_13 of Radio/Baseband processor, output if master, input if slave
23 PCM_DOUT O GPIO_12 of Radio/Baseband processor, output
24 PCM_DIN I GPIO_11 of Radio/Baseband processor, input
25 GND Ground Ground
26 ANT2 I/O, RF Bluetooth antenna for WiBear11n-SF2/-DF2 module, at WiBear-SF1/-DF1
not connected
27 GND Ground Ground
28 GND Ground Ground
29 ANT1 I/O, RF WLAN + Bluetooth antenna for WiBear11n-SF1/-DF1 module, WLAN only
antenna for WiBear11n-SF2/-DF2 module
30 GND Ground Ground
NOTES:
1
Possible to use as a LED output depend on firmware (driver) version. Regardless of the I/O supply
(1.8V or 3.3V), the supply to the actual board LED always need to use 3.3V on the other end of the
LED and works as open drain circuitry in that case. LED current limiting resistor should be used.
Maximum sink to the ground current - 10 mA.
2
Should be provided from external source in case of power save operation modes necessity. Not
required for full power mode and for automotive use (firmware & driver version 14.44). Mandatory
for all other releases with sleep mode support. Sleep clock signal requirements: frequency
32.768kHz ±250ppm, low level from 0 to 0.25V, high level from 0.8 to 2.0V, duty cycle 20-80%,
slew rate less than 100nS (10-90%).
3
Leave it unconnected when 32.768KHz Sleep Clock provided, pull down by 47K resistor for Sleep
Module supports dual-band 802.11b/g/n and 802.11a/n operation in both 2.4 GHz and 5 GHz radio bands,
respectively. Therefore the module is designed to operate in only one frequency band at time.
WiBear11n module supports a SDIO device interface that conforms to the industry standard SDIO Full-Speed
specification and allows a host controller using the SDIO bus protocol to access the WLAN and Bluetooth
functions. The module also supports High Speed mode as defined in the SDIO 1.2 specification.
The module's SDIO host interface pins are powered from the VIO voltage supply.
A module acts as the device on the SDIO bus. The SDIO interface supports SDIO modes at the full clock range
of 0 to 50 MHz which allows a maximum throughput of 200Mbps.
Output
Output
Clock
Input
Clock
Input
T
WL
T
Figure 9: SDIO Protocol Timing Diagram
T
WL
T
T
ODLY
Figure 10: SDIO Protocol Timing Diagram at High Speed Mode
Normal 0 - 25 MHz fPP Clock Frequency
High Speed 0 - 50 MHz
Normal 10 - - ns TWL Clock Low Time
High Speed 7 - - ns
Normal 10 - - ns TWH Clock High Time
High Speed 7 - - ns
Input Setup Time
ISU
Normal 5 - - ns T
High Speed 6 - - ns
Normal 5 - - ns TIH Input Hold Time
High Speed 2 - - ns
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 readymade reference design is available as WiBear11n Evaluation Kit from Lesswire AG.
Schematic Diagram
SDIO
DAT2
DAT3
CMD
GND
VDD
CLK
GND
DAT0
DAT1
3V3
9
SD_D2
1
SD_D3
2
CMD
3
4
5
CLK
6
7
SD_D0
8
SD_D1
10uF
U2
1
IN
3
C2
EN
GND2NC
MCP1824T-1802E
OUT
1V83V3
5
C3
4
10uF
3V3
3V3
D1
GreenD2Orange
"Supply"
360
R1
"WLAN""BT"
620
3V3
D3
Blue
R2
R3
3.6k
LED_1LED_0
100nF
C6
C5
DNP
1V8
RESET
SD_D2
SD_D3
CMD
CLK
SD_D0
SD_D1
U3
SENSE5VDD
3
MR
4
CT
TPS3808G30
20mS Reset Pulse
Y1
4
32.768kHz
10mS Start Up Time
12
34
56
78
910
11
13
VCC
EN1GND
Figure 11: Evaluation Kit outlook
J1
GND
C4
100nF
12
14
3
2
3V3
3V3 VIO
6
1
2
R4
10K
1
3
C1
100nF
J4
2
LED_0
3
LED_1
11
SD_D2
12
SD_D3
13
CMD
14
CLK
15
SD_D0
16
SD_D1
9
10
RESET
19
SLP_CLK
20
CFG
3V3
VIO
3
J7
J6
R5
10K
RESET
SLP_CLK
2
R6
47K
CFG
J5
2
1V8
1
Assembly
Option
WLAN and Bluetooth at the same antenna terminal (U1:Pin 44)
1
WLAN and Bluetooth at the different antenna terminals
2
(U1:Pin 29 and U1:Pin 26 correspondingly) for uAP functionality
4
5
6
J8
21
22
23
24
SDIO
RESET
OUT
Figure 12: Evaluation kit schematic diagram
U1
LED_0
LED_1
SD_D2
SD_D3
SD_CMD
SD_CLK
SD_D0
SD_D1
PD
RESET
SLP_CLK
CFG
3V3
VIO
1V8
PCM_SYNC
PCM_CLK
PCM_DOUT
PCM_DIN
WiBear11n
Description
ANT1
ANT2
GND
GND
GND
GND
GND
GND
GND
GND
GND
A1
Dual Band
Antenna
U1
C7
2.2pF
L1
6.8nHL212nH
J3
DNP
+
R7
0
29
26
1
7
8
17
18
25
27
28
30
J2
R8
MAIN
DNP
J3
AUX
Antenna matching components (L1, C7, L2)
values depend on antenna type,
layout, PCB material and PCB thickness
The WiBear11n is a surface mount module supplied on a 6-layer FR4-type PCB with gold plated connection
pads and produced in a lead-free process with a lead-free soldering paste.
Modules rated at moisture sensitivity level 3. See moisture sensitive warning label on each shipping bag for
detailed information. After opening the dry pack, modules must be mounted within 168 hours in factory
conditions of maximum 30°C/60%RH or must be stored at less than 10%RH. Modules require baking if the
humidity indicator card shows more than 10% when read at 23±5°C or if the conditions mentioned above are
not met. Please refer to J-STD-033B standard for bake procedure.
Module is compatible with industrial reflow profile for RoHS/Pb-free solders, Sn96.5/Ag3.0/Cu0.5 solder is a
right choice. Use of "No Clean" soldering paste is strongly recommended, cleaning the populated modules is
strongly discouraged - residuals under the module cannot be easily removed with any cleaning process.
Cleaning with water can lead to capillary effects where water is absorbed into the gap between the host board
and module. The combination of soldering flux residuals and encapsulated water could lead to short circuits
between neighboring pads.
Only a single reflow soldering process is encouraged for host boards with WiBear11n modules.
The reflow profile used is dependent on the thermal mass of the entire populated PCB, heat transfer efficiency
of the oven and particular type of solder paste used. Since the profile used is process and layout dependent,
the optimum profile should be studied case by case. Recommendations below should be taken as a starting
point guide. In case of basic information necessity please refer to J-STD-020C standard.
Table 16: Recommended reflow profile
Profile feature
Ramp up rate (T
to TP) 3°C/sec max 3°C/sec max
SMAX
Minimum soak temperature (T
Maximum soak temperature (T
Sn-Pb eutectic
(Sn63/Pb37)
) 100°C 150°C
SMIN
) 150°C 200°C
SMAX
RoHS/Pb-free
(Sn96.5/Ag3.0/Cu0.5)
Soak time (ts) 60 - 120 sec 60 - 180 sec
Liquidus temperature (TL) 183°C 217°C
Time above TL (tL) 60 - 150 sec 60 - 150 sec
Peak temperature (TP) 215 - 225°C 235 - 245°C
Time within +0 / -5°C of actual TP (tp) 10 - 30 sec 20 - 40 sec
Ramp down rate 6°C/sec max 6°C/sec max
Time from 25°C to TP 6 min max 8 min max
Note: lowest value of T
and slower ramp down rate (2 - 3°C/sec) is preferred.
The purpose of this guide is to explain how to integrate the WiBear11n module into the end product. The
module has to be installed and used in accordance with the technical instructions provided by the
manufacturer. The module may only be implemented in the configuration that was authorized. Note that any
modifications of this equipment not expressly approved by the manufacturer could void the user’s authority to
operate the equipment.
European Union Regulatory Compliance
The WiBear11n module has been tested and complies with the regulatory standards EN 300 328 and EN 301
489-1/-17. W e declare that the human exposure of this module is below the SAR limits specified in the EU
recommendations 1999/519/EC.
IMPORTANT: The ‘CE’ marking must be affixed to a visible location on the OEM product, where this module is
installed in, and has to be labeled in accordance to R&TTE Directive 1999/5/EC.
FCC Compliance
This device complies with Part 15 of the FCC Rules1. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
Not authorized modification could void authority to use this equipment.
The internal / external antenna(s) used for this module must provide a separation distance of at least 20 cm
from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
NOTE: The outside of final product that contain a WiBear11n module must display in a user accessible area a
label referring to the enclosed module. This exterior label can use wording such as the following: “Contains
Transmitter Module FCC ID: PV7-WIBEAR11N-SF1”2 or “Contains FCC ID: PV7-WIBEAR11N-SF1”.
IMPORTANT: The approval type for the WiBear11n variants is a limited modular approval due to the absence
of a shielding. This requires any manufacturer of original equipment containing the WiBear11n module to ask
for an approval of their design by the manufacturer of the WiBear11n module.
IC Compliance
This device complies with Industry Canada RSS-210 (Rev. 8). Operation is subject to the following two
conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the
device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d'en compromettre le fonctionnement.
The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not
emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable
from Health Canada.
Not authorized modification could void authority to use this equipment.
1
Limited modular approval has been applied for the module variant WiBear11n-SF1, the certification process for the other
module variants is ongoing.
2
FCC and IC IDs for the WiBear11n module variants are shown in Table 18. Select the applicable ID.
The internal / external antenna(s) used for this module must provide a separation distance of at least 20 cm
from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
NOTE: The outside of final product that contain a WiBear11n module must display in a user accessible area a
label referring to the enclosed module. This exterior label can use wording such as the following: “Contains
Transmitter Module IC ID: 7738A-WB11NSF1”2 or “Contains IC ID: 7738A-WB11NSF1”.
IMPORTANT: The approval type for the WiBear11n variants is a limited modular approval due to the absence
of a shielding. Due to Industry Canada Modular Approval Requirements (Source: RSS-Gen / Issue 3 / Dec.
2010) any application which includes the WiBear11n module must be approved by the module manufacturer
(lesswire AG). The application manufacturer must provide design data for the review procedure.
Approved Antennas List
The module has been tested and approved for use with the antenna listed in the table below.
Table 17: Approved antennas list
Model Name Manufacturer and description Gain [dBi]
The module may be integrated with other antennas which the OEM installer must authorize with respective
regulatory agencies and after approval of the module manufacturer.
FCC and IC IDs
Table 18: FCC and IC IDs for WiBear11n module variants
Model FCC ID IC ID
WiBear11n-SF1 PV7-WIBEAR11N-SF1 7738A-WB11NSF1
WiBear11n-SF2 PV7-WIBEAR11N-SF2 7738A-WB11NSF2
WiBear11n-DF1 PV7-WIBEAR11N-DF1 7738A-WB11NDF1
WiBear11n-DF2 PV7-WIBEAR11N-DF2 7738A-WB11NDF2
Label
Due to the small module size, the FCC and IC IDs cannot be displayed on the label. The corresponding FCC
and IC IDs for the module variants are shown in the table above.