The   QCA9531 Module of the specification

1.    Product Overview

1.1    General Description

The module_QCA9531 is a complete,small form factor 802.11a/b/g/n Wi-Fi Solution optimized for low

power, low-cost, and highly integrated AP and consumer electronic devices,the module integrates all Wi-Fi

functionality in a package friendly to low-cost PCB design, requiring only a external 3.3V power supply .

The module based on the single chip QCA9531 which integrates an 802.11n 2x2. MIMO MAC/BB/ radio

with internal PA and LNA. It supports 802.11n operations up to 144 Mbps for 20 MHz and 300 Mbps for 40

MHz,and 802.11b/g data rates.

The module support AP mode and client mode at the same time , and include mass service

application software to reduce the research and design work of customer.

1.2    Applications

Smart home network equipment

1,Wireless WIFI device

2,Router

3,Others

1.3    Features

1,PCI Express 1.1 Root Complex interface

2,One USB 2.0 interface

3,Four IEEE 802.3 Ethernet LAN interface

4,One low-speed UART (115 Kbps) and multiple GPIO pins for general purpose I/O

5,Built in two way 2.4GHz wireless RF transceiver antenna, fully integrated RF Front-End including

PAs and LNAs

6,Requiring only a external 3.3V power supply

7,512M16bit Random access memory

8,16Mb SPI Flash

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1.4     Photo of the module

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2.    Module Hardware Overview

2.1    Block Diagram

The general Hardware architecture is shown below Figure:

Module Block Diagram

2.2    Pin Assignment

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2.3

Pin Description

The  MODULE_QCA9531 pins  have  many  function  ,including  a  x1  PCI-E  channels,  a  USB2.0

interface, a JTAG debug interface, four IEEE 802.3 Ethernet LAN interface, and other GPIOs. And the

tables below are the description.

Pin NO. Pin name    I/O  Description

Raemark

1    GND

G

2    GPIO1

3    GPIO4

4    GPIO0

5    GPIO2

6    GPIO3

7    GND

TDI

LED_link4

I/O  TCK

JTAG

TDO

TMS

G

8    P4_RX+

9    P4_RX-

10   P4_TX+

11   P4_TX-

12   GND

Ethernet port 4 receive pair, can be

I

grounded if not used

P4

P0

P1

P2

P3

Ethernet port 4 transmit pair, can be

left open if not used

O

G

O

13   P0_TX+

14   P0_TX-

15   P0_RX+

16   P0_RX-

17   GND

Ethernet port 2 transmit pair, can be

left open if not used

Ethernet port 2 receive pair, can be

grounded if not used

I

G

I

18   P1_RX+

19   P1_RX-

20   P1_TX+

21   P1_TX-

22   GND

Ethernet port 1 receive pair, can be

grounded if not used

Ethernet port 1 transmit pair, can be

left open if not used

O

G

O

23   P2_TX+

24   P2_TX-

25   P2_RX+

26   P2_RX-

27   GND

Ethernet port 2 transmit pair, can be

left open if not used

Ethernet port 2 receive pair, can be

grounded if not used

I

G

I

28   P3_RX+

29   P3_RX-

30   P3_TX+

31   P3_TX-

Ethernet port 3 receive pair, can be

grounded if not used

Ethernet port 3 transmit pair, can be

left open if not used

O

4

5

3.    Electrical Characteristics

Absolute Maximum Rating

Parameter

Symbol

Min

Max

3.6

Units

Power Supply Voltage

3.3V

3.3

0

-0.3

-0.3

V

V

GND

GPIO Voltage

VIH

1.2

——

1.2

0.5

-0.3

1.1

1.5

V

V

V

V

VIL

0.12

1.23

0.12

VOH

VOL

——

-0.3

Power Supply

3.3V

Current

1

0.95

1.2

10

A

GPIO Current

IIH

——    ——

uA

6

9

mA

Environment

Storage Temperature

Tstg

-40

80

260

95

°C

°C

%

Peak Reflow Soldering Temperature <10s

Humidity

Tpeak

4 .    Manufacturing Process Recommendations

When the module is welded, please note that it's heating time and heating temperature, if you

do not know how to set the corresponding parameters, please refer to the following figure, it helps to

make  the  module  get  good  welding  performance,  and  not  to  appear  unnecessary  problems.  Of

course, you can adjust according to the actual situation.

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5 .    Recommend Layout

The  following  figure  is  the  specific  shape  and  size  of  the  module,  you  can  adjust  your  PCB

package, in order to facilitate Lay_out.

6.

Reference design schematic

Please refer to the Annex: app_qca9531_20151106.pdf schematic diagram

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