Module Descriptions
MOTOROLA
Bluetooth Accelerator (BTA)
16-7
16.3.1.3 Bluetooth Pipeline Processor
The Bluetooth core contains a Bluetooth pipeline in which all low-level processing is handled in dedicated
hardware. The pipeline units are controlled by the sequencer, however each unit contains an additional,
small controller to perform its function independently. The units communicate via a dedicated serial wire.
The control is handled by a request/acknowledge scheme when data is available. The pipeline contains the
following four units:
•
HEC/CRC generator and checker
•
Encryption and decryption engine
•
Whitening and de-whitening logic
•
FEC coding and decoding
The four units process incoming or outgoing Bluetooth packets. Figure 16-3 shows the format of a
Bluetooth packet.
Table 16-3. Bluetooth Core Interrupts
Interrupt Type
Frequency
Description
BTsys
SysTick
3.2 kHz (fixed)
SysTick is the main Bluetooth heartbeat. The phrase depends
on whether the NativeClk (when unit is the master) or
EstimatedClk (when unit is the slave) is used.
EndOfHeader (EOH)
800 Hz (max)
EOH interrupts are issued after a header has been decoded
during receive of certain types of packets. For ID, NULL and
POLL packets, no interrupt is generated. For HVx and FHS
packets, an interrupt is generated after the packet header
(because packet length is fixed). For DMx, DHx, AUX and DV
packets, an interrupt is generated after the payload header has
been decoded. This interrupt is maskable via the COMMAND
Register.
EndOfFrame (EOF)
1.6 kHz (max)
Generated after any received or transmitted frame. This interrupt
is maskable via the COMMAND Register.
BTtim
BT timer
–
User programmable Bluetooth application-specific timer.
BTwui
BT wakeup 2
–
Interrupt that occurs during the wakeup sequence. The interrupt
is generated when the PLL is enabled and when it has stabilized.
BT wakeup 3
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...