Cypress Semiconductor Perform CY7C1513KV18 Manual do Utilizador descarregar pdf (Página 3)

CYWUSB6934

CYWUSB6932

Document Number : 38-16007 Rev. *L Page 3 of 34

Applications

■ PC human interface devices (HIDs)

❐ Mice

❐ Keyboards

❐ Joysticks

■ Peripheral gaming devices

❐ Game controllers

❐ Console keyboards

■ General

❐ Presenter tools

❐ Remote controls

❐ Consumer electronics

❐ Barcode scanners

❐ POS peripherals

❐ Toys

Applications Support

The CYWUSB6932/CYWUSB6934 ICs are supported by the

CY3632 WirelessUSB Development Kit. The development kit

provides all of the materials and documents needed to cut the

cord on wired applications such as:

1. Two radio modules that connect directly to two prototyping

platform boards

2. Comprehensive WirelessUSB protocol code examples

3. A WirelessUSB Listener tool

4. All of the associated schematics, gerber files, and bill of

materials.

The CY4632 WirelessUSB LS keyboard mouse reference

design provides a production-worthy example of a wireless

mouse and keyboard system.

The CY3633 WirelessUSB LS gaming development kit provides

support for designing a wireless gamepad for the major gaming

consoles and is offered as an accessory to the CY3632

WirelessUSB development kit.

Functional Overview

The CYWUSB6932/CYWUSB6934 ICs provide a complete

WirelessUSB LS SPI to antenna radio modem. The SoC is

designed to implement wireless devices operating in the

worldwide 2.4-GHz ISM frequency band (2.400 GHz to

2.4835 GHz). It is intended for systems compliant with

world-wide regulations covered by ETSI EN 301 489-1 V1.4.1,

ETSI EN 300 328-1 V1.3.1 (European countries); FCC CFR 47

Part 15 (USA and Industry Canada) and ARIB STD-T66 (Japan).

The CYWUSB6934 IC contains a 2.4-GHz radio transceiver, a

GFSK modem and a dual DSSS reconfigurable baseband. The

CYWUSB6932 IC contains a 2.4-GHz radio transmit-only, a

GFSK modem and a DSSS baseband. The radio and baseband

are both code- and frequency-agile. Forty-nine spreading codes

selected for optimal performance (Gold codes) are supported

across 78 1-MHz channels yielding a theoretical spectral

capacity of 3822 channels. Both ICs support a range of up to 10

meters or more.

2.4-GHz Radio

The receiver and transmitter are a single-conversion low-Inter-

mediate Frequency (low-IF) architecture with fully integrated IF

channel matched filters to achieve high performance in the

presence of interference. An integrated Power Amplifier (PA)

provides an output power control range of 30 dB in seven steps.

Both the receiver and transmitter integrated Voltage Controlled

Oscillator (VCO) and synthesizer have the agility to cover the

complete 2.4-GHz GFSK radio transmitter ISM band. The

synthesizer provides the frequency-hopping local oscillator for

the transmitter and receiver. The VCO loop filter is also

integrated on-chip.

GFSK Modem

The transmitter uses a DSP-based vector modulator to convert

the 1-MHz chips to an accurate GFSK carrier.

The receiver uses a fully integrated Frequency Modulator (FM)

detector with automatic data slicer to demodulate the GFSK

signal.

Dual DSSS Baseband

Data is converted to DSSS chips by a digital spreader.

De-spreading is performed by an oversampled correlator. The

DSSS baseband cancels spurious noise and assembles

properly correlated data bytes.

The DSSS baseband has three operating modes: 64 chips/bit

Single Channel, 32 chips/bit Single Channel, and 32 chips/bit

Single Channel Dual Data Rate (DDR).

64 Chips/Bit Single Channel

The baseband supports a single data stream operating at 15.625

kbits/sec. The advantage of selecting this mode is its ability to

tolerate a noisy environment. This is because the 15.625

kbits/sec data stream utilizes the longest PN Code resulting in

the highest probability for recovering packets over the air. This

mode can also be selected for systems requiring data transmis-

sions over longer ranges.

32 Chips/Bit Single Channel

The baseband supports a single data stream operating at 31.25

kbits/sec.

32 Chips/Bit Single Channel Dual Data Rate (DDR)

The baseband spreads bits in pairs and supports a single data

stream operating at 62.5 kbits/sec.

Table 1. Internal PA Output Power Step Table

PA Setting Typical Output Power (dBm)

6 –2.4

5 –5.6

4 –9.7

3 –16.4

2 –20.8

1 –24.8

0 –29.0

Not Recommended for New Designs

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