Texas Instruments WL1835MODCOM8A User Manual
WL1835MODCOM8A WLAN MIMO and BT
Module Evaluation Board for TI Sitara™
Platform
User's Guide
Literature Number: SWRU359A
September 2013 –Revised October 2013
Contents
Preface ....................................................................................................................................... 3
1 Introduction ........................................................................................................................ 4
1.1 Features .................................................................................................................. 4
1.2 Applications .............................................................................................................. 5
1.3 TI Module Key Benefits ................................................................................................. 5
2 Board Pin Assignment ......................................................................................................... 6
2.1 Pin Descriptions ......................................................................................................... 7
3 Electrical Characteristics ..................................................................................................... 9
4 Antenna Characteristics ....................................................................................................... 9
4.1 VSWR ..................................................................................................................... 9
4.2 Efficiency ................................................................................................................ 10
5 Antenna Characteristics ..................................................................................................... 10
5.1 Radio Pattern ........................................................................................................... 10
6 Circuit Design ................................................................................................................... 14
6.1 Schematic ............................................................................................................... 14
6.2 Bill of Materials (BOM) ................................................................................................ 15
7 Layout Guidelines ............................................................................................................. 16
7.1 Board Layout ........................................................................................................... 16
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Table of Contents SWRU359A–September 2013–Revised October 2013
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About This Manual
This user's guide describes how to use the TI WL1835MODCOM8A board to evaluate the performance of
the TI WL1835MODGA module.
Related Documentation From Texas Instruments
• TI WiLink8 Single-Band Combo Module – Wi-Fi, BT, and BLE (SWRS152)
• WiLink 8 Wiki: http://www.ti.com/wilink8wiki
If You Need Assistance
The primary sources of WL1835MODGA information are the device-specific data sheets and user’s
guides. For the most up-to-date version of the user’s guide and data sheets, go to
http://www.ti.com/product/wl1835mod.
Warning
The WL1835MODCOM8A board is tested to comply with ETSI/R&TTE over temperatures from 0 to
+70°C. The WL1835MODCOM8A board is FCC and IC certified.
This board should not be modified to operate in other frequency bands other than what they are designed
for.
FCC/IC Regulatory compliance (WL1835MODCOM8A board only)
FCC Part 15 Class A Compliant
IC ICES-003 Class A Compliant
Preface
SWRU359A–September 2013–Revised October 2013
Read This First
SWRU359A–September 2013–Revised October 2013 Preface
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Copyright © 2013, Texas Instruments Incorporated
WL1835MODCOM8A WLAN MIMO and BT Module
1 Introduction
The WL1835MODCOM8A device is a WiFi®MIMO, Bluetooth®, and Bluetooth Low Energy (BLE) module
board with the TI WL1835MODGA module. WL1835MODGA is built-in TI WL1835 IEEE 802.11 b/g/n and
Bluetooth 4.0 solutions to provide the best WiFi and Bluetooth coexistence interoperability and power-
saving technologies from TI.
User's Guide
SWRU359A–September 2013–Revised October 2013
Evaluation Board for TI Sitara™ Platform
1.1 Features
• WLAN, Bluetooth, BLE on a module board
• 100-pin board card
• Dimension 76.0 mm(L) x 31.0 mm(W)
• WLAN 2.4 GHz SISO (20- and 40-MHz channels), 2.4-GHz MIMO (20-MHz channels)
• Support for BLE dual mode
• Seamless integration with TI Sitara and other application processors
• Design for TI AM335X general-purpose EVM
• WLAN and Bluetooth, BLE cores are software and hardware compatible with prior WL127x, WL128x
and CC256x offerings, for smooth migration to device.
• Shared HCI transport for Bluetooth and BLE over UART and SDIO for WLAN.
• WiFi / Bluetooth single antenna co-existence
• Built-in chip antenna
• Optional U.FL RF connector for external 2.4-GHz band antenna
• Direct connection to battery using external switching mode power supply supporting 4.8-V to 2.9-V
operation
• VIO in the 1.8-V domain
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WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A– September 2013 – Revised October 2013
Sitara™ Platform
Figure 1. WL1835MODCOM8A Top View
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1.2 Applications
• Internet of Things Multimedia
• Home Electronics
• Home Appliances and White Goods
• Industrial and Home Automation
• Smart Gateway and Metering
• Video Conferencing
• Video Camera and Security
1.3 TI Module Key Benefits
• Reduces Design Overhead: Single WiLink8™ Module Scales Across Wi-Fi and Bluetooth.
• WLAN High Throughput: 80 Mbps (TCP), 100 Mbps (UDP)
• Bluetooth 4.0 + BLE (Smart Ready)
• WiFi-Bluetooth Single Antenna Coexistence
• Low Power (30–50% Less than Previous Generation)
• Available as Easy-to-Use FCC, ETSI, and Telec Certified Module
• Lower Manufacturing Costs, Saving Board Space and Minimizing RF Expertise
• AM335x Linux®and Android™ Reference Platform Accelerates Customer Development and Time to
Market
Introduction
SWRU359A–September 2013–Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI
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Sitara™ Platform
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Board Pin Assignment
2 Board Pin Assignment
www.ti.com
Figure 2. Board Top View
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WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A– September 2013 – Revised October 2013
Sitara™ Platform
Figure 3. Board Bottom View
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2.1 Pin Descriptions
No. Name Type Description
1 SLOW_CLK I Slow clock input
2 GND G Ground
3 GND G Ground
4 WL_EN I WLAN Enable
5 VBAT P Power supply input
6 GND G Ground
7 VBAT P Power supply input
8 VIO P Power supply input for I/O pin
9 GND G Ground
10 N.C. No connection
11 WL_RS232_TX O WLAN tool RS232 output
12 N.C. No connection
13 WL_RS232_RX I WLAN tool RS232 input
14 N.C. No connection
15 WL_UART_DBG O WLAN Logger output
16 N.C. No connection
17 N.C. No connection
18 GND G Ground
19 GND G Ground
20 SDIO_CLK I WLAN SDIO clock
21 N.C. No connection
22 GND G Ground
23 N.C. No connection
24 SDIO_CMD I/O WLAN SDIO command
25 N.C. No connection
26 SDIO_D0 I/O WLAN SDIO data bit 0
27 N.C. No connection
28 SDIO_D1 I/O WLAN SDIO data bit 1
29 N.C. No connection
30 SDIO_D2 I/O WLAN SDIO data bit 2
31 N.C. No connection
32 SDIO_D3 I/O WLAN SDIO data bit 3
33 N.C. No connection
34 WLAN_IRQ O WLAN SDIO interrupt out
35 N.C. No connection
36 N.C. No connection
37 GND G Ground
38 N.C. No connection
39 N.C. No connection
40 N.C. No connection
41 N.C. No connection
42 GND G Ground
43 N.C. No connection
44 N.C. No connection
45 N.C. No connection
46 N.C. No connection
47 GND G Ground
Board Pin Assignment
SWRU359A–September 2013–Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI
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