FINAL
JULY 2004
CP3BT26 Reprogrammable Connectivity Processor with
Bluetooth®, USB, and CAN Interfaces
1.0 General Description
The CP3BT26 connectivity processor combines high perfor- advanced power-saving modes achieve new design points
mance with the massive integration needed for embedded in the trade-off between battery size and operating time for
Bluetooth applications. A powerful RISC core with on-chip handheld and portable applications.
SRAM and Flash memory provides high computing band-
In addition to providing the features needed for the next gen-
width, hardware communications peripherals provide high-
eration of embedded Bluetooth products, the CP3BT26 is
I/O bandwidth, and an external bus provides system ex-
backed up by the software resources designers need for
pandability.
rapid time-to-market, including an operating system, Blue-
On-chip communications peripherals include: Bluetooth tooth protocol stack implementation, peripheral drivers, ref-
Lower Link Controller, Universal Serial Bus (USB) 1.1 node, erence designs, and an integrated development
CAN, Microwire/Plus, SPI, ACCESS.bus, quad UART, 12-bit environment. Combined with a Bluetooth radio transceiver
A/D converter, and Advanced Audio Interface (AAI). Addi- such as National’s LMX5252, the CP3BT26 provides a com-
tional on-chip peripherals include Random Number Gener- plete Bluetooth system solution.
ator (RNG), DMA controller, CVSD/PCM conversion
National Semiconductor offers a complete and industry-
module, Timing and Watchdog Unit, Versatile Timer Unit,
proven application development environment for CP3BT26
Multi-Function Timer, and Multi-Input Wake-Up (MIWU)
applications, including the IAR Embedded Workbench,
iSYSTEM winIDEA and iC3000 Active Emulator, Bluetooth
unit.
Bluetooth hand-held devices can be both smaller and lower Development Board, Bluetooth Protocol Stack, and Applica-
in cost for maximum consumer appeal. The low voltage and tion Software.
Block Diagram
Clock Generator
12 MHz and 32 kHz
Oscillator
PLL and Clock
Generator
Power-on-Reset
Bluetooth Lower
Link Controller
1K Byte
Sequencer RAM
256K Bytes
Flash
Program
Memory
RF Interface
Serial
Debug
Interface
8K Bytes
Flash
Data
32K Bytes
Static
RAM
CR16C
CPU Core
CAN 2.0B
Controller
Protocol
Core
4.5K Bytes
Data RAM
CPU Core Bus
Random
Number
Generator
Timing and
Watchdog
Unit
Interrupt
Control
Unit
Power
Manage-
ment
Peripheral
Bus
Controller
Bus
Interface
Unit
DMA
Controller
CVSD/PCM
Converter
Peripheral Bus
ACCESS
.bus
Audio
Interface
Microwiire/
SPI
Versatile
Timer Unit
Muti-Func-
tion Timer
Multi-Input
Wake-Up
8-Channel
12-bit ADC
GPIO
Quad UART
USB
DS202
Bluetooth is a registered trademark of Bluetooth SIG, Inc. and is used under license by National Semiconductor.
TRI-STATE is a registered trademark of National Semiconductor Corporation.
©2004 National Semiconductor Corporation
www.national.com