Redpine Signals RS-WC-201 Quick setup guide

Redpine Signals, Inc. Proprietary and Confidential.
RS-WC-201
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October 2012
Redpine Signals, Inc.
2107 N. First Street, #680
San Jose, CA 95131.
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.redpinesignals.com

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Table of Contents
RS-WC-201............................................................................... 1
1Reset Timing ................................................................................. 4
2 Circuit and Layout Guidelines ............................................... 6
3u.FL Connector Recommendations........................................ 7
4 FCC and IC Declaration......................................................... 8

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List of Figures
Figure 1: Reset Timing ................................................................................. 4
Figure 2: PCB Landing Pattern for RS-WC-201 ............................................. 5
Figure 3: Copper Etching Guidelines............................................................. 6
Figure 4: uFL Connector and External Antenna ............................................ 7

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1Reset Timing
Following diagram shows the timing requirement for Reset input in two scenarios.
A. Power up
B. Giving reset during module operation
Figure 1: Reset Timing
3.3V input
supply
20msec
A
1msec
B
Reset_n

Redpine Signals, Inc. Proprietary and Confidential.
RS-WC-201 PCB Landing Pattern
TOP VIEW
Figure 2: PCB Landing Pattern for RS-WC-201

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2 Circuit and Layout Guidelines
The following are guidelines for integrating the RS-WC-201 module into a
wireless LAN solution.
1. The module has a ground pad of size 2.7mm x 2.7mm. An
application’s layout must have a provision to include this.
a. Provide a 2.7 mm X 2.7 mm Copper pad on the Topside of the
application board. Please open the solder mask in this area so
that the Cu is exposed.
b. Provide a 2.7 mm X 2.7 mm or higher Copper pad on the
bottom side of the application board. Please open the solder
mask in this area so that the Cu is exposed.
The dimension of the ground pad is shown as 2.5mm x 2.5mm
in the datasheet. However, the landing is shown as expanded
to 2.7mm X 2.7mm in the module integration guide for it to
act as a better thermal ground pad.
c. Provide at least 12 via’s to connect these pads to the Ground
plane. It is recommended that the via’s should be at least 10
mil x 18 mil.
2. The copper on the application board should be etched out on all the
layers on the designated area shown in figure for the Landing Pattern.
This is required for the Antenna Keep out area. An example is shown
below.
Figure 3: Copper Etching Guidelines

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3 u.FL Connector Recommendations
Figure 4: uFL Connector and External Antenna
The RS-WC-201 module comes with an integrated chip antenna, and also
a u.FL connector where an external antenna can be connected. A choice
between the chip antenna and the external antenna can be made through
a software command(Below mentioned in the table). The figures show the
u.FL connector integrated on the module. The connector on the external
antenna should be pushed down to fit into the u.FL connector connected
to the module. Some reference part numbers for external antenna are
given below. This is for general guidance only, as the choice of the
antenna will depend on the application.
Manufacturer
Part No
Antenna Factor (Chip Antenna)
ANT-2.4-CHP-X
Pulse (External Antenna)
W1043
u. FL Mating Connector
External Antenna
uFL Connector (Available in the module)

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4 FCC and IC Declaration
This device complies with Part 15 of the FCC Rules.
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.
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the
interference at his own expense.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
This device complies with Industry Canada license-exempt RSS standard(s).
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 susceptibled'en compromettre le fonctionnement.
CAUTION: Any changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.
This equipment should be installed and operated with minimum distance 20 cm
between the radiator & your body.
End Product Labelling
This Module is labelled with its own FCC ID. If the FCC ID Certification Number is not
visible while installed inside another device, then the device should display the label
on it referring the enclosed module. In that case, the final end product must be
labelled in a visible area with the following:
“Contains Transmitter Module FCC ID: XF6-RSWC201”
OR
“Contains FCC ID: XF6-RSWC201”
The OEM should not provide information to the end user regarding installation or
removal of this RF module or change RF related parameters in the user manual of
the end product.
The OEM integrator is still responsible for testing their end-product for any additional
compliance requirements required with this module installed (for example, digital
device emissions, PC peripheral requirements, etc.).

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This Module is labelled with its own IC ID. If the IC ID Certification Number is not visible while installed
inside another device, then the device should display the label on it referring the enclosed module. In that
case, the final end product must be labelled in a visible area with the following:
“Contains Transmitter Module IC ID: 80407A-RSWC201”
OR
“Contains IC ID: 80407A-RSWC201”
Ce module est étiqueté avec son propre ID IC. Si le numéro de certification IC ID n'est pas visible lorsqu'il
est installé à l'intérieur d'un autre appareil, l'appareil doit afficher l'étiquette sur le module de référence ci-
joint. Dans ce cas, le produit final doit être étiqueté dans un endroit visible par le texte suivant:
“Contains Transmitter Module IC ID: 80407A-RSWC201”
OR
“Contains IC ID: 80407A-RSWC201”
énoncé de la FCC (états-Unis seulement) Cet équipement a été testé et jugé conforme aux
limites de Classe B pour un appareil numérique, en vertu de l’article 15 de la réglementation de la
FCC. Ces limites ont été instaurées our fournir une rotection raisonnable contre toute interférence
nuisible dans une installation résidentielle. Cet équipement génère, utilise et peut émettre de
l’énergie radiofréquence. S’il n’est pas installé et utilisé conformément aux instructions, il peut
provoquer des interférences sur les
communications radio. Cependant, il n’est pas garanti que des interférences ne se produiront pas
dans certaines installations. Si cet équipement cause des interférences à la reception radio ou
télévisée (ce qui peut être vérifi é en éteignant l’appareil puis en le remettant sous tension),
l’utilisateur peut enter de ésoudre en suivant une ou plusieurs des mesures ci-après : Réorienter
ou déplacer l’antenne réceptrice.
ugmenter l’espace entre l’appareil et le récepteur. Brancher l’appareil à une prise de courant
différente de celle sur laquelle le récepteur est branché. Pour obtenir de l’aide, contacter le
vendeur ou un technician radio/television expérimenté.
REMARQUE: Toute modifi cation non autorisée expressément par le fabricant responsable de la
onformité peut annuler le droit de l’utilisateur à faire fonctionner le produit.

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Document History:
Rev.
Ver.
No.
Date
Changes
1.
0.1
10, Feb 2012
Initial version.
2.
1.0
27 Mar, 2012
Merged schematics for UART and SPI
3.
2.0
8 May, 2012
Added antenna keep-out area for the module,
put in Rev 2.0 schematics. Added details
about pin settings for SPI/UART interface
selection
4.
2.1
13 Jul,2012
USB interface added
5.
2.2
17 July, 2012
Added new schematics to match the datasheet
version 1.4
6.
2.3
20 July, 2012
Changed peak current to 400mA
7.
2.4
1 Aug, 2012
Removed statement that WAKEUP is not
supported
8.
2.5
30 Aug, 2012
USB interface added
9.
2.6
5 Oct, 2012
Connections for pin 13 and 14 are changed.
Now they are connected to the MCU for
wireless firmware upgrade
Review History
Ver.
No.
Date
Reviewer
Comments
Action
2.0
01 May,
2012
Suresh
Closed version 2.0 after review
completion