Texas Instruments WL1835MODCOM8A Manuale utente

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

SWRU359A–September 2013–Revised October 2013 Preface

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

4WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A–September 2013–Revised October 2013

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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

SWRU359A–September 2013–Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI

Sitara™ Platform

Board Pin Assignment

www.ti.com

2 Board Pin Assignment

Figure 2. Board Top View

Figure 3. Board Bottom View

6WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A–September 2013–Revised October 2013

Sitara™ Platform Submit Documentation Feedback

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Board Pin Assignment

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

SWRU359A–September 2013–Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI

Sitara™ Platform

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Board Pin Assignment

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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

Sitara™ Platform Submit Documentation Feedback

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Electrical Characteristics

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

SWRU359A–September 2013–Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI

Sitara™ Platform

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.

10 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A–September 2013–Revised October 2013

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