BC41B143A-DS-002PD Datasheet, PDF (42/89 Pages) List of Unclassifed Manufacturers – BlueCore 4-ROM CSP EDR Single Chip Bluetooth v2.0 + EDR System

CSR Bluetooth Software Stacks
9 CSR Bluetooth Software Stacks
BlueCore4-ROM CSP is supplied with Bluetooth v2.0 + EDR compliant stack firmware which runs on the internal
RISC microcontroller.
The BlueCore4-ROM CSP software architecture allows Bluetooth processing and the application program to be
shared in different ways between the internal RISC microcontroller and an external host processor (if any). The
upper layers of the Bluetooth stack (above HCI) can be run either on-chip or on the host processor.
9.1 BlueCore HCI Stack
HCI
LM
LC
48KB RAM
Baseband
MCU
Host
USB
UART
Host I/ O
Radio
PCM I / O
Figure 9.1: BlueCore HCI Stack
In the implementation shown in Figure 9.1 the internal processor runs the Bluetooth stack up to the Host
Controller Interface (HCI). The Host processor must provide all upper layers including the application.
9.1.1 Key Features of the HCI Stack – Standard Bluetooth Functionality
Bluetooth v2.0 + EDR mandatory functionality
! EDR, 2Mbps payload data rate
! EDR, 3Mbps payload data rate
! Support 2-DH1, 2-DH3, 2-DH5, 3-DH1, 3-DH3 and 3-DH5 packet types
! Support 2-EV3, 2-EV5, 3-EV3 and 3-EV5 packet types
Bluetooth v1.2 mandatory functionality:
! Adaptive Frequency Hopping (AFH), including classifier
! Faster connection – enhanced inquiry scan (immediate FHS response)
! LMP improvements
! Parameter ranges
! Support of AUX1 packet type
BC41B143A-ds-002Pd
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