16-16
MC9328MX1 Reference Manual
MOTOROLA
Bluetooth Accelerator (BTA)
Figure 16-6. Timing of the RF Module Control Signals for the MC13180 Radio
SiliconWave Radio (4 Wire SPI)
The SiliconWave radio is programmed via a four-wire serial programming interface (SPI) comprised of the
SPI_TXD, SPI_RXD, SPI_CLK, /SPI_SS. The definition of the signal direction is with reference to the
Radio.
The BTA supports byte SPI reads from and writes to the radio. The SiliconWave radio registers are
accessed via register addresses. The BTA uses “burst” writes to the SiliconWave radio by requiring that
only the first of up to eight consecutive register addresses be specified.
Data is written to the SiliconWave radio as follows:
1. Write up to eight bytes to the SPI_WORD0 through SPI_WORD3 registers. The data is
automatically buffered by the BTA and is not written to the radio until the address is specified
in step 2.
2. Write the address of the first register to the SPI_WRITE_ADDR register. Once the address
has been written, the BTA writes the buffered data word(s) to the SiWave radio one word at
a time. The radio increments the address of the radio register by one after each write.
The mapping of the data written to the SPI_WORD0 through SPI_WORD3 registers in the programming
sequence illustrated in Figure 16-7.
SPI_Data
SPI_Clk
SPI_En
Software
writes to BTA
RxTx_En
Tx_Data
Frame_Synch
Rx_Data
Time B
SysTick
Can be tristated, depending
on the
register
RF_Control
Bluetooth packet data
EOF/AAO/
Idle Mode
SysTick
SysTick
Can be tristated, depending
on the
register
RF_Control
Time B
EOF/AAO/
Idle Mode
Bluetooth packet data
Software
writes to BTA
Idle
Tx
Idle
Rx
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 ...