Fn-Link 3131A-S User manual

Fn-Link
3131A-S
User's Manual
WIFI Module

3131A-S
FN-LINK TECHNOLOGY LIMITED 1 Proprietary & Confidential Information
Revision History
Version Date Description Draft Approved
1.0 2017-06-01 First release Colin Ming William Tan
1.1 2017-06-22 Modified input voltage range Colin Ming William Tan
1.1 2017-06-22 Added 32.768K clock input
requesting Colin Ming William Tan
1.2 2017-07-14 Modified Pin13、39、40 function Colin Ming William Tan
1.3 2017-08-04 Modified SDIO specification
description Colin Ming William Tan

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CONTENTS
1. Introduction ..................................................................................................................... 1
2. Features ........................................................................................................................... 2
3. General Specification ..................................................................................................... 2
3.1 General Specification ................................................................................................. 2
4. WiFi RF Specification ..................................................................................................... 3
4.1 2.4GHz RF Specification............................................................................................ 3
5. Power Consumption ....................................................................................................... 5
6. Pin Assignments ............................................................................................................. 6
6.1 Pin Outline ................................................................................................................. 6
6.2 Pin Definition ............................................................................................................. 6
7. Dimensions ...................................................................................................................... 8
7.1 Physical Dimensions ................................................................................................. 8
7.2 Module Physical Dimensions ..................................................................................... 9
7.3 Layout Recommendation ......................................................................................... 10
8. Host Interface Timing Diagram .................................................................................... 11
8.1 SDIO Pin Description ............................................................................................... 11
8.2 SDIO Default Mode Timing Diagram ....................................................................... 11
8.3 SDIO High Speed Mode Timing Diagram ................................................................ 12
8.4 SDIO Bus Timing Specifications in SDR Modes ...................................................... 13
9.Reference Design ........................................................................................................... 14
10.Recommended Reflow Profile .................................................................................... 15
11. Packing Information .................................................................................................... 16

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1. Introduction
3131A-S is a small size and low profile of WiFi module, board size is 12mm*12mm
with module thickness of 1.7mm. It can be easily manufactured on SMT process and
highly suitable for tablet PC, ultra book, mobile device and consumer products. It
providesSDIO interface for WiFi. The WiFi throughput can go up to 150Mbps in theory
by using 1x1 802.11b/g/n SISO technology.
3131A-S uses highly integrated WiFi single chip based on advanced COMS process.
3131A-S integrates whole WiFi function blocks into a chip, such as SDIO/MPU, MAC,
BB, AFE, RFE, PA, EEPROM and LDO/SWR, except fewer passive components
remained on PCB.

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2. Features
 Operate at ISM frequency bands (2.4GHz)
 SDIO interface for WiFi
 Low power dissipation
 High transmitting power
 High receiving sensitivity
 IEEE standards support: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n.
 Enterprise level security which can apply WPA/WPA2 certification for WiFi. 
 WiFi 1 transmitter and 1 receiver allow data rates supporting up to 150 Mbps
downstream and 150 Mbps upstream PHY rates
3. General Specification
3.1 General Specification
3.1.2 Recommended Operating Rating
Min. Typ. Max. Unit
Operating Temperature -30 25 70 deg.C
VCC33 3.3 3.6 4.8 V
VDDIO - 1.8V - V
Note: Suggested power input range in 3.6V-4.5V.
Model Name 3131A-S
Product Description Support WiFi functionality
Dimension L x W x H: 12 x 12 x1.8 (typical) mm
WiFi Interface Support SDIO
Operating temperature -30°C to 70°C
Storage temperature -40°C to 125°C

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4. WiFi RF Specification
4.1 2.4GHz RF Specification
Feature Description
Operating Frequency 2.412～2.462GHz
Standards
WiFi:
IEEE 802.11b, IEEE 802.11g, IEEE 802.11n,
IEEE 802.11d, IEEE 802.11e, IEEE 802.11h,
IEEE 802.11i
Modulation
WiFi:
802.11b: DSSS(1M,2Mbps), CCK(11, 5.5Mbps),
802.11 g/n: OFDM
PHY Data rates
WiFi:
802.11b: 11,5.5,2,1 Mbps
802.11g: 54,48,36,24,18,12,9,6 Mbps
802.11n: up to 150Mbps
Transmit Output Power
WiFi:
802.11b 18.5 dBm
802.11g 16.5 dBm
802.11n 15.5 dBm (MCS 7_HT20)
14.5 dBm (MCS 7_HT40)
EVM
802.11b /1Mbps : EVM≦-10dB
802.11b /11Mbps : EVM≦-10dB
802.11g /6Mbps : EVM≦-5dB
802.11g /54Mbps : EVM≦-25dB
802.11n /6.5Mbps : EVM≦-5dB
802.11n /65Mbps : EVM≦-28dB
802.11n /13.5Mbps : EVM≦-5dB
802.11n /135Mbps : EVM≦-28dB
Receiver Sensitivity
(WiFi)
802.11b@10% PER
1Mbps ≦-98dBm
2Mbps≦ -94dBm
5.5Mbps≦ -93dBm
11Mbps ≦-90dBm Max input level≥-8
802.11g@10% PER
6Mbps ≦-94dBm
9Mbps ≦ -92dBm
≦
≦
≦
≦

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12Mbps≦ -91dBm
18Mbps≦ -89dBm
24Mbps≦ -86dBm
36Mbps≦ -82dBm
48Mbps ≦-78dBm
54Mbps ≦-77dBm Max input level≥-20
802.11n@10% PER
HT20_MCS 0 ≦-93dBm HT40_MCS 0≦-90
HT20_MCS 1≦ -90dBm HT40_MCS 1≦-87
HT20_MCS 2 ≦-88dBm HT40_MCS 2≦-85
HT20_MCS 3 ≦-85dBm HT40_MCS 3≦-82
HT20_MCS 4 ≦-82dBm HT40_MCS 4≦-79
HT20_MCS 5 ≦-78dBm HT40_MCS 5≦-75
HT20_MCS 6 ≦-76dBm HT40_MCS 6≦-73
HT20_MCS 7 ≦-75dBm HT40_MCS 7≦-71
Max input level≥-20
Operating Channel
WiFi 2.4GHz:
11: (Ch. 1-11) – United States
13: (Ch. 1-13) – Europe
Media Access Control WiFi: CSMA/CA with ACK
Antenna
Network Architecture
Ad-hoc mode (Peer-to-Peer )
Infrastructure mode
Software AP
WiFi Direct
Security WPA, WPA-PSK, WPA2, WPA2-PSK, WEP 64bit & 128bit,
IEEE 802.11x, IEEE 802.11i
OS Supported Android /Linux
Host Interface SDIO2.0
Operating Voltage 3.3-4.8V Vdc, 1.8V I/O supply voltage
Dimension Typical 12*12*1.8 mm
See page 18

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5. Power Consumption
Power Consumption
(Typical by using SWR)
TX Mode: (Throughput mode) 230mA (MCS7/BW40/16dBm)
RX Mode: (Throughput mode) 66mA (MCS7/BW40/-60dBm)
Associated Idle power saving with DTIM=3 0.38mA
Deep Sleep: 0.04mA

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6. Pin Assignments
6.1 Pin Outline
6.2 Pin Definition
NO Name Type Description
1 GND － Ground connections
2 WL_ANT I/O RF I/O port
3 GND － Ground connections
4 NC － Floating (Don’t connected to ground)
5 NC － Floating (Don’t connected to ground)
6 Host wake device I Host Wake up WiFi, rising edge trigger
7 GPIO3 I/O Floating (Don’t connected to ground)
8 NC － Floating (Don’t connected to ground)
9 VCC P Main power voltage source input 3.3V-4.8V
10 NC － Floating (Don’t connected to ground)
11 NC － Floating (Don’t connected to ground)
12 PMU_POWRON I Enable pin for WLAN device
ON: pull high ; OFF: pull low
13 GPIO1 I/O SDIO data interrupt
14 SDIO_DATA_2 I/O SDIO data line 2
15 SDIO_DATA_3 I/O SDIO data line 3
16 SDIO_DATA_CMD I/O SDIO command line

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17 SDIO_DATA_CLK I SDIO clock line
18 SDIO_DATA_0 I/O SDIO data line 0
19 SDIO_DATA_1 I/O SDIO data line 1
20 GND － Ground connections
21 NC － Floating (Don’t connected to ground)
22 VDDIO P I/O Voltage supply input 1.8V
23 NC － Floating (Don’t connected to ground)
24 RTC_CLK I Exteral 32.768Khz clock input for Power saving
25 NC － Floating (Don’t connected to ground)
26 NC － Floating (Don’t connected to ground)
27 NC － Floating (Don’t connected to ground)
28 NC － Floating (Don’t connected to ground)
29 NC － Floating (Don’t connected to ground)
30 NC － Floating (Don’t connected to ground)
31 GND － Ground connections
32 NC － Floating (Don’t connected to ground)
33 GND － Ground connections
34 GPIO2 I/O Floating (Don’t connected to ground)
35 NC － Floating (Don’t connected to ground)
36 GND － Ground connections
37 NC － Floating (Don’t connected to ground)
38 NC － Floating (Don’t connected to ground)
39 WL_RST I WiFi reset pin, internal pull high. Low: reset enable, High:
reset disable
40 Dev_Wake_Host O WiFi wake up host, rising edge trigger for host, high level
trigger for MCU.
41 NC － Floating (Don’t connected to ground)
42 NC － Floating (Don’t connected to ground)
43 NC － Floating (Don’t connected to ground)
44 NC － Floating (Don’t connected to ground)

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7. Dimensions
7.1 Physical Dimensions
(Unit: mm)
< TOP VIEW > < Side View >
1.7±0.1

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7.2 Module Physical Dimensions
(Unit: mm)
< TOP VIEW >

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Information
7.3 Layout Recommendation
(Unit: mm)
< TOP VIEW >

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Information
8. Host Interface Timing Diagram
8.1 SDIO Pin Description
The module supports SDR12(25MHz) and SDR25(50MHz, dual rates) in addition to the
1.8V default speed(25MHz) and high speed (50 MHz). It has the ability to stop the SDIO
clock and map the interrupt signal into a GPIO pin. This ‘out-of-band’ interrupt signal notifies
the host when the WLAN device wants to turn on the SDIO interface. The ability to force the
control of the gated clocks from within the WLAN chip is also provided.
SDIO Pin Description
SD 4-Bit Mode
DATA0 Data Line 0
DATA1 Data Line 1 or Interrupt
DATA2 Data Line 2 or Read Wait
DATA3 Data Line 3
CLK Clock
CMD Command Line
8.2 SDIO Default Mode Timing Diagram

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8.3 SDIO High Speed Mode Timing Diagram

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8.4 SDIO Bus Timing Specifications in SDR Modes
Clock timing(SDR Modes)

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Information
9.Reference Design

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10. Recommended Reflow Profile
Referred to IPC/JEDEC standard.
Peak Temperature : <250°C
Number of Times : 2 times
2.5 /se℃
2.5
-
40~70 sec
250℃

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11. Packing Information
Tape and Reel Package
Using self-adhesive tape
Size of black tape: 24mm*32.6m the cover tape: 21.3mmm*32.6m
Color of plastic disc: blue
A roll of 2000pcs
NY bag size:460mm*385mm size ：350*350*35mm

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The packing case size:350*210*370mm