BC41B143A-DS-001PE Datasheet, PDF (44/102 Pages) List of Unclassifed Manufacturers – BlueCpre 4-ROM Single Chip Bluetooth v2.0 System with EDR

CSR Bluetooth Software Stacks
! Co-operative existence with 802.11b/g chipsets. The device can be optionally configured to support
a number of different co-existence schemes including:
! TDMA – Bluetooth and WLAN avoid transmitting at the same time.
! FDMA – Bluetooth avoids transmitting within the WLAN channel
! Combination TDMA and FDMA – Bluetooth avoids transmitting in the WLAN channel only when
WLAN is active.
! Please refer to separate documentation for full details of the co-existence schemes that CSR
supports.
Note:
Always refer to the Firmware Release Note for the specific functionality of a particular build.
8.2 BlueCore RFCOMM Stack
RFCOMM
SDP
L2CAP
HCI
LM
LC
48KB RAM
Baseband
MCU
Host
USB
UART
Host I/O
Radio
PCM I/O
Figure 8.2: BlueCore RFCOMM Stack
In the version of the firmware, shown in Figure 8.2 the upper layers of the Bluetooth stack up to RFCOMM are
run on-chip. This reduces host-side software and hardware requirements at the expense of some of the power
and flexibility of the HCI only stack.
BC41B143A-ds-001Pe
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Production Information
© Cambridge Silicon Radio Limited 2005
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