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
2Table of Contents SWRU359A–September 2013–Revised October 2013
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Preface
SWRU359A– September 2013 –Revised October 2013
Read This First
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
3
SWRU359A–September 2013–Revised October 2013 Preface
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User's Guide
SWRU359A– September 2013 –Revised October 2013
WL1835MODCOM8A WLAN MIMO and BT Module
Evaluation Board for TI Sitara™ Platform
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.
Figure 1. WL1835MODCOM8A Top View
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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www.ti.com Introduction
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
5
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Board Pin Assignment www.ti.com
2 Board Pin Assignment
Figure 2. Board Top View
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
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Board Pin Assignment www.ti.com
No. Name Type Description
48 N.C. No connection
49 N.C. No connection
50 N.C. No connection
51 N.C. No connection
52 PCM_IF_CLK I/O Bluetooth PCM clock input or output
53 N.C. No connection
54 PCM_IF_FSYNC I/O Bluetooth PCM frame sync input or output
55 N.C. No connection
56 PCM_IF_DIN I Bluetooth PCM data input
57 N.C. No connection
58 PCM_IF_DOUT O Bluetooth PCM data output
59 N.C. No connection
60 GND G Ground
61 N.C. No connection
62 N.C. No connection
63 GND G Ground
64 GND G Ground
65 N.C. No connection
66 BT_UART_IF_TX O Bluetooth HCI UART transmit output
67 N.C. No connection
68 BT_UART_IF_RX I Bluetooth HCI UART receive input
69 N.C. No connection
70 BT_UART_IF_CTS I Bluetooth HCI UART Clear to Send input
71 N.C. No connection
72 BT_UART_IF_RTS O Bluetooth HCI UART Request to Send output
73 N.C. No connection
74 BT_FUNC1 O BT_HOST_WAKE_UP Signal to wake up the host from Bluetooth
75 N.C. No connection
76 BT_UART_DEBUG O Bluetooth Logger UART output
77 GND G Ground
78 GPIO9 I/O General-purpose I/O
79 N.C. No connection
80 N.C. No connection
81 N.C. No connection
82 N.C. No connection
83 GND G Ground
84 N.C. No connection
85 N.C. No connection
86 N.C. No connection
87 GND G Ground
88 N.C. No connection
89 BT_EN I Bluetooth Enable
90 N.C. No connection
91 N.C. No connection
92 GND G Ground
93 BT_FUNC2 I BT_WAKE_UP Bluetooth wakeup from host
94 N.C. No connection
95 GND G Ground
96 GPIO11 I/O General-purpose I/O
8WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013
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No. Name Type Description
97 GND G Ground
98 GPIO12 I/O General-purpose I/O
99 N.C. General-purpose I/O
100 GPIO10 I/O General-purpose I/O
3 Electrical Characteristics
Refer to the detailed data in the WL1835MODGA data sheet for electrical characteristics.
4 Antenna Characteristics
4.1 VSWR
Figure 4 shows the antenna VSWR.
Figure 4. Antenna VSWR
9
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Antenna Characteristics www.ti.com
4.2 Efficiency
Figure 5 shows the antenna efficiency.
Figure 5. Antenna Efficiency
5 Antenna Characteristics
5.1 Radio Pattern
Figure 6 shows the radio pattern of the WL1835MODCOM8A device.
Figure 6.
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