Ubiquiti QCA9994 Guide d'application

QCA9994 Dual-Band 4x4 with 4 SS MIMO

802.11a/n/ac WLAN SoC

Device Specification

1Introduction

1.1 General description

The QCA9994 with Qualcomm

VIVE

802.11ac technology is a highly integrated wireless local area

network (WLAN) system-on-chip (SoC) for 5 GHz 802.11ac. The QCA9994 is a synthesizer WLAN ra-

dio with 160 MHz and 80+80 MHz support. It includes a CPU and memory for WLAN media access

layer (MAC) and physical layer (PHY) management and provides host offload of other high-level net-

working tasks. It enables high-performance 4x4 MIMO with 4 spatial streams for wireless applications

demanding the highest robust link quality and maximum throughput and range, plus 4 spatial stream

MU-MIMO. The QCA9994 integrates a multi-protocol MAC, PHY, analog-to-digital/digital-to-analog

converters (ADC/DAC), 4x4 MIMO radio transceivers, and PCIE interface in an all-CMOS device for

low power consumption and small form-factor applications.

The QCA9994 implements half-duplex OFDM, supporting 1.733 Gbps for 802.11ac 160/80+80/80 MHz

channel operation in 5 GHz mode, and IEEE 802.11a/n/ac data rates. Additional features include 802.11ac

explicit transmit beamforming (TxBF), 802.11 compatible implicit TxBF, multi-user MIMO (MU-

MIMO), Dynamic Bandwidth Switching, Per Packet Switching between 4SS/80 MHz and 2SS/160/80+80

MHz, Maximal Likelihood (ML) decoding, Low-Density Parity Check (LDPC), Maximal Ratio Combin-

ing (MRC), Space Time Block Code (STBC), and On-Chip OneTime Programmable (OTP) memory to

eliminate the need for an external flash and to further reduce the external component count and BOM cost.

The QCA9994 supports 802.11 wireless MAC protocol, 802.11i security, Wi-Fi offload, error recovery,

and 802.11e quality of service (QoS).

The QCA9994 supports up to four simultaneous spatial streams integrating four Tx and four Rx chains for

high throughput and extended coverage. Tx chains combine PHY in-phase (I) and quadrature (Q) signals,

convert them to the desired frequency, and drive the RF signal through external power amplifiers (PAs). Rx

chains receive from antennas through external LNAs. The frequency synthesizer supports 1-MHz steps to

match frequencies defined by IEEE 802.11a/b/g/n/ac specifications. The QCA9994 supports frame data

transfer to and from the host using a PCIE interface that supports interrupt generation and reporting and

status reporting. Other external interfaces include EEPROM and GPIOs.

QCA9994 Dual-Band 4x4 with 4 SS MIMO 802.11ac/abgn WLAN SoC Device Specification Introduction

1.2 Features

General



4x4 SU-/MU-MIMO technology improves effective throughput and range over existing 802.11a/n/

products



Support for up to four spatial streams



Support for 48-MHz crystal



156-pin, 12 mm x 12 mm DRQFN package



Package footprint compatible with QCA9980/QCA9990

WLAN



Dual-synthesizer WLAN radio with 160 MHz and 80+80 MHz support



Supports 20/40/80/160/80+80 MHz at 5 GHz



Supports up to 256 QAM



Data rates of up to 1.733 Gbps in 802.11ac 80 MHz channels using reduced (short) guard interval (GI)



Multi-user MIMO (MU-MIMO) beamformer



802.11ac explicit transmit beamforming (TxBF) and legacy implicit TxBF for both beamformer and

beamformee



TCP and UDP checksum offload



Dynamic bandwidth switching



Per-packet switching between 4SS/80 MHz, 2SS/160 or 80+80 MHz



Dynamic frequency selection (DFS) in required 5-GHz bands when used as an AP



Maximal likelihood (ML) decoding



Supports spatial multiplexing, cyclic-delay diversity (CDD), low-density parity check (LDPC),

maximal ratio combining (MRC), Space Time Block Code (STBC)



AMSDU and AMPDU frame aggregation



802.11e-compatible bursting



Digital predistortion



Support for locationing (RSSI and RTT-based, 802.11REVmc compliant)

Supported Standards



802.11a/n/ac



Support for IEEE 802.11d, e, h, i, j, k, r, u, v time stamp, w, and z standards

CPU/Memory



Integrated CPU for Wi-Fi offload with memory



On-chip OTP memory

Safety Notices

1. Read, follow, and keep these instructions.

2. Heed all warnings.

3. Only use attachments/accessories specified by the manufacturer.

WARNING: Do not use this product in location that can

be submerged by water.

WARNING: Avoid using this product during an electrical

storm. There may be a remote risk of electric shock from

lightning.

Electrical Safety Information

1. Compliance is required with respect to voltage, frequency, and current

requirements indicated on the manufacturer’s label. Connection to a

different power source than those specified may result in improper

operation, damage to the equipment or pose a fire hazard if the

limitations are not followed.

2. There are no operator serviceable parts inside this equipment. Service

should be provided only by a qualified service technician.

3. This equipment is provided with a detachable power cord which has

an integral safety ground wire intended for connection to a grounded

safety outlet.

a. Do not substitute the power cord with one that is not the provided

approved type. Never use an adapter plug to connect to a 2-wire

outlet as this will defeat the continuity of the grounding wire.

b. The equipment requires the use of the ground wire as a part of the

safety certification, modification or misuse can provide a shock

hazard that can result in serious injury or death.

c. Contact a qualified electrician or the manufacturer if there

are questions about the installation prior to connecting the

equipment.

d. Protective earthing is provided by Listed AC adapter. Building

installation shall provide appropriate short-circuit backup

protection.

e. Protective bonding must be installed in accordance with local

national wiring rules and regulations.

Limited Warranty

UBIQUITI NETWORKS, Inc (“UBIQUITI NETWORKS”) warrants that the

product(s) furnished hereunder (the “Product(s)”) shall be free from defects

in material and workmanship for a period of one (1) year from the date

of shipment by UBIQUITI NETWORKS under normal use and operation.

UBIQUITI NETWORKS’ sole and exclusive obligation and liability under

the foregoing warranty shall be for UBIQUITI NETWORKS, at its discretion,

to repair or replace any Product that fails to conform to the above

warranty during the above warranty period. The expense of removal and

reinstallation of any Product is not included in this warranty. The warranty

period of any repaired or replaced Product shall not extend beyond its

original term.

Warranty Conditions

The above warranty does not apply if the Product:

(I) has been modified and/or altered, or an addition made thereto,

except by Ubiquiti Networks, or Ubiquiti Networks’ authorized

representatives, or as approved by Ubiquiti Networks in writing;

(II) has been painted, rebranded or physically modified in any way;

(III) has been damaged due to errors or defects in cabling;

(IV) has been subjected to misuse, abuse, negligence, abnormal

physical, electromagnetic or electrical stress, including lightning

strikes, or accident;

(V) has been damaged or impaired as a result of using third party

firmware;

(VI) has no original Ubiquiti MAC label, or is missing any other original

Ubiquiti label(s); or

(VII) has not been received by Ubiquiti within 30 days of issuance of

the RMA.

In addition, the above warranty shall apply only if: the product has been

properly installed and used at all times in accordance, and in all material

respects, with the applicable Product documentation; all Ethernet cabling

runs use CAT5 (or above), and for outdoor installations, shielded Ethernet

cabling is used, and for indoor installations, indoor cabling requirements

are followed.

Returns

No Products will be accepted for replacement or repair without obtaining

a Return Materials Authorization (RMA) number from UBIQUITI NETWORKS

during the warranty period, and the Products being received at UBIQUITI

NETWORKS’ facility freight prepaid in accordance with the RMA process of

UBIQUITI NETWORKS. Products returned without an RMA number will not

be processed and will be returned freight collect or subject to disposal.

Information on the RMA process and obtaining an RMA number can be

found at: www.ubnt.com/support/warranty.

Disclaimer

EXCEPT FOR ANY EXPRESS WARRANTIES PROVIDED HEREIN, UBIQUITI

NETWORKS, ITS AFFILIATES, AND ITS AND THEIR THIRD PARTY DATA,

SERVICE, SOFTWARE AND HARDWARE PROVIDERS HEREBY DISCLAIM

AND MAKE NO OTHER REPRESENTATION OR WARRANTY OF ANY KIND,

EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO,

REPRESENTATIONS, GUARANTEES, OR WARRANTIES OF MERCHANTABILITY,

ACCURACY, QUALITY OF SERVICE OR RESULTS, AVAILABILITY,

SATISFACTORY QUALITY, LACK OF VIRUSES, QUIET ENJOYMENT, FITNESS

FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT AND ANY

WARRANTIES ARISING FROM ANY COURSE OF DEALING, USAGE OR

TRADE PRACTICE IN CONNECTION WITH SUCH PRODUCTS AND SERVICES.

BUYER ACKNOWLEDGES THAT NEITHER UBIQUITI NETWORKS NOR

ITS THIRD PARTY PROVIDERS CONTROL BUYER’S EQUIPMENT OR THE

TRANSFER OF DATA OVER COMMUNICATIONS FACILITIES, INCLUDING

THE INTERNET, AND THAT THE PRODUCTS AND SERVICES MAY BE

SUBJECT TO LIMITATIONS, INTERRUPTIONS, DELAYS, CANCELLATIONS

AND OTHER PROBLEMS INHERENT IN THE USE OF COMMUNICATIONS

FACILITIES. UBIQUITI NETWORKS, ITS AFFILIATES AND ITS AND THEIR THIRD

PARTY PROVIDERS ARE NOT RESPONSIBLE FOR ANY INTERRUPTIONS,

DELAYS, CANCELLATIONS, DELIVERY FAILURES, DATA LOSS, CONTENT

CORRUPTION, PACKET LOSS, OR OTHER DAMAGE RESULTING FROM ANY

OF THE FOREGOING. In addition, UBIQUITI NETWORKS does not warrant

that the operation of the Products will be error-free or that operation will

be uninterrupted. In no event shall UBIQUITI NETWORKS be responsible

for damages or claims of any nature or description relating to system

performance, including coverage, buyer’s selection of products (including

the Products) for buyer’s application and/or failure of products (including

the Products) to meet government or regulatory requirements.

Limitation of Liability

EXCEPT TO THE EXTENT PROHIBITED BY LOCAL LAW, IN NO EVENT WILL

UBIQUITI OR ITS SUBSIDIARIES, AFFILIATES OR SUPPLIERS BE LIABLE FOR

DIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL OR OTHER DAMAGES

(INCLUDING LOST PROFIT, LOST DATA, OR DOWNTIME COSTS), ARISING

OUT OF THE USE, INABILITY TO USE, OR THE RESULTS OF USE OF THE

PRODUCT, WHETHER BASED IN WARRANTY, CONTRACT, TORT OR OTHER

LEGAL THEORY, AND WHETHER OR NOT ADVISED OF THE POSSIBILITY OF

SUCH DAMAGES.

the Ubiquiti U logo, the Ubiquiti beam logo, airMAX, airOS, InnerFeed,

PowerBeam, and TOUGHCable are trademarks or registered trademarks of

Ubiquiti Networks, Inc. in the United States and in other countries. All other

trademarks are the property of their respective owners. AI070815

www.ubnt.com

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