4
Bluetooth Stack Microcontroller
The CSR8640 BGA uses a 16-bit RISC 80MHz MCU for low power consumption and efficient use of memory. It
contains a single-cycle multiplier and a memory protection unit for the VM accelerator, see Section 4.1.
The MCU, interrupt controller and event timer run the Bluetooth software stack and control the Bluetooth radio and
host interfaces.
4.1
VM Accelerator
CSR8640 BGA contains a VM accelerator alongside the MCU. This hardware accelerator improves the performance
of VM applications.
Advance Information
This material is subject to CSR's non-disclosure agreement
© Cambridge Silicon Radio Limited 2011
Page 27 of 110
CS-209182-DSP1
CSR8640 BGA
Data Sheet
