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PDF CYW20734 Data sheet ( Hoja de datos )
| Número de pieza | CYW20734 | |
| Descripción | Single-Chip Bluetooth Transceiver | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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CYW20734
Single-Chip Bluetooth Transceiver for
Wireless Input Devices
The Cypress CYW20734 is a Bluetooth 4.1-compliant, stand-alone baseband processor with an integrated 2.4 GHz transceiver.
Manufactured using the industry's most advanced 40 nm CMOS low-power process, the CYW20734 employs the highest level of
integration to eliminate all critical external components, thereby minimizing the device's footprint and the costs associated with
implementing Bluetooth solutions.
The CYW20734 is the optimal solution for applications in wireless input devices including game controllers, remote, keyboards, and
joysticks. Built-in firmware adheres to the Bluetooth Low Energy (BLE) profile and the BLE Human Interface Device (HID) profile.
Cypress Part Numbering Scheme
Cypress is converting the acquired IoT part numbers from Broadcom to the Cypress part numbering scheme. Due to this conversion,
there is no change in form, fit, or function as a result of offering the device with Cypress part number marking. The table provides
Cypress ordering part number that matches an existing IoT part number.
Table 1. Mapping Table for Part Number between Broadcom and Cypress
Broadcom Part Number
BCM20734
BCM20734UA1KFFB3G
Cypress Part Number
CYW20734
CYW20734UA1KFFB3G
Applications
Features
■ Game controllers
■ Wireless pointing devices (mice)
■ Remote controls
■ Wireless keyboards
■ Joysticks
■ Home automation
■ Point-of-sale input devices
■ 3D glasses
■ Blood pressure monitors
■ “Find me” devices
■ Heart rate monitors
■ Proximity sensors
■ Thermometers
■ Complies with Bluetooth Core Specification version 4.1
including BR/EDR/BLE
■ BLE HID profile version 1.00 compliant
■ Bluetooth Device ID profile version 1.3 compliant
■ Supports Generic Access Profile (GAP)
■ Supports Adaptive Frequency Hopping (AFH)
■ Excellent receiver sensitivity
■ Programmable output power control
■ Integrated ARM Cortex-M3 microprocessor core
■ On-chip power-on reset (POR)
■ Support for EEPROM and serial flash interfaces
■ Integrated low dropout regulator (LDO)
■ On-chip software controlled power management unit
■ Programmable key scan matrix interface, up to 8 × 20 key-
scanning matrix
■ Three-axis quadrature signal decoder
■ PCM/I2S Interface
■ Infrared modulator
■ IR learning
■ Auxiliary ADC with up to 28 analog channels
■ One mono microphone input
■ On-chip support for serial peripheral interface (master and
slave modes)
■
Broadcom Serial
NXP I2C slaves)
Communications
interface
(compatible
with
■ Package type:
❐ 90-pin FBGA package (8.5 mm × 8.5 mm)
❐ RoHS compliant
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 002-14874 Rev. *S
• San Jose, CA 95134-1709 • 408-943-2600
Revised Tuesday, October 4, 2016
1 page  
CYW20734
1.1.3 Link Control Layer
The link control layer is part of the Bluetooth link control functions that are implemented in dedicated logic in the link control unit (LCU).
This layer consists of the command controller that takes commands from the software, and other controllers that are activated or
configured by the command controller, to perform the link control tasks. Each task is performed in a different state or substate in the
Bluetooth Link Controller.
■ Major states:
❐ Standby
❐ Connection
■ Substates:
❐ Page
❐ Page Scan
❐ Inquiry
❐ Inquiry Scan
❐ Sniff
1.1.4 Test Mode Support
The CYW20734 fully supports Bluetooth Test mode as described in Part I:1 of the Specification of the Bluetooth System Version 3.0.
This includes the transmitter tests, normal and delayed loopback tests, and reduced hopping sequence.
In addition to the standard Bluetooth Test Mode, the CYW20734 also supports enhanced testing features to simplify RF debugging
and qualification and type-approval testing. These features include:
■ Fixed frequency carrier wave (unmodulated) transmission
❐ Simplifies some type-approval measurements (Japan)
❐ Aids in transmitter performance analysis
■ Fixed frequency constant receiver mode
❐ Receiver output directed to I/O pin
❐ Allows for direct BER measurements using standard RF test equipment
❐ Facilitates spurious emissions testing for receive mode
■ Fixed frequency constant transmission
❐ 8-bit fixed pattern or PRBS-9
❐ Enables modulated signal measurements with standard RF test equipment
1.1.5 Frequency Hopping Generator
The frequency hopping sequence generator selects the correct hopping channel number based on the link controller state, Bluetooth
clock, and device address.
1.2 Microprocessor Unit
The CYW20734 microprocessor unit runs software from the link control (LC) layer up to the host controller interface (HCI). The
microprocessor is based on the Cortex-M3 32-bit RISC processor with embedded ICE-RT debug and JTAG interface units. The
microprocessor also includes 848 KB of ROM memory for program storage and boot ROM, 352 KB of RAM for data scratch-pad, and
patch RAM code.
The internal boot ROM provides flexibility during power-on reset to enable the same device to be used in various configurations. At
power-up, the lower layer protocol stack is executed from the internal ROM.
External patches can be applied to the ROM-based firmware to provide flexibility for bug fixes and features additions. These patches
can be downloaded using external NVRAM. The device can also support the integration of user applications and profiles using an
external serial flash memory.
Document Number: 002-14874 Rev. *S
Page 5 of 51
5 Page 
CYW20734
Table 5 shows the recommended crystal specifications.
Table 5. Reference Crystal Electrical Specifications
Parameter
Nominal frequency
Oscillation mode
Frequency tolerance
Tolerance stability over temp
Equivalent series resistance
Load capacitance
Operating temperature range
Storage temperature range
Drive level
Aging
Shunt capacitance
Conditions
–
–
@25°C
@0°C to +70°C
–
–
–
–
–
–
–
Minimum
–
–
–
–
–
0
–40
–
–
–
Typical
24.000
Fundamental
±10
±10
–
12
–
–
–
–
–
Maximum
–
–
–
50
–
+70
+125
200
±10
2
Unit
MHz
–
ppm
ppm
pF
°C
°C
μW
ppm/year
pF
1.6.2 HID Peripheral Block
The peripheral blocks of the CYW20734 all run from a single 128 kHz low-power RC oscillator. The oscillator can be turned on at the
request of any of the peripherals. If the peripheral is not enabled, it shall not assert its clock request line.
The keyboard scanner is a special case, in that it may drop its clock request line even when enabled, and then reassert the clock
request line if a keypress is detected.
1.6.3 32 kHz Crystal Oscillator
Figure 4 shows the 32 kHz XTAL oscillator with external components and Table 6 lists the oscillator’s characteristics. It is a standard
Pierce oscillator using a comparator with hysteresis on the output to create a single-ended digital output. The hysteresis was added
to eliminate any chatter when the input is around the threshold of the comparator and is ~100 mV. This circuit can be operated with
a 32 kHz or 32.768 kHz crystal oscillator or be driven with a clock input at similar frequency. The default component values are: R1
= 10 MΩ and C1 = C2 = ~10 pF. The values of C1 and C2 are used to fine-tune the oscillator.
Figure 4. 32 kHz Oscillator Block Diagram
C2
R1
C1
32.768 kHz
XTAL
Document Number: 002-14874 Rev. *S
Page 11 of 51
11 Page | ||
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| PDF Descargar | [ Datasheet CYW20734.PDF ] | |
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