STLC2416 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STLC2416' PDF : 27 Pages View PDF
STLC2416
When spi_io from ADNS_2030 is driving, spi_rxd should be active, while spi_txd is set as a tri-state high
impedance input.
For a read operation, the Bluetooth spi_txd is put in high impedance state after the reception of the ad-
dress.
Note that this feature works independently of the SPI mode, supporting other combinations.
In this case, the devices are connected as described in the figure below.
Figure 7.
STLC2416
spi_clk
spi_frm
spi_txd
spi_rxd
Agilent ADNS-2030
spi_clk
spi_io
8.2.2 Feature description: 32 bit SPI
One application is a Bluetooth stereo headset. In this application, the audio samples are received from the
emitter through the air using the Bluetooth baseband with ACL packets. The samples are decoded by the
embedded ARM CPU (the samples were encoded, for compression, in SBC or MP3 format) and then sent
to a stereo codec though the SPI interface. The application is described in the figure below.
Figure 8.
Bluetooth
reception
STLC2416
SPI slave mode 32 bits
spi_txd
spi_r xd
spi_frm
spi_clk
32 spi_clk
16 spi_clk
STw5094A CODEC
SPI master mode 32 bits
stereo headset
To support this application, the data size is 32 bits. The 32 bits support is implemented for both transmit
and receive.
8.3 I2C Interface
Used to access I2C peripherals.
The interface is a fast master I2C; it has full control of the interface at all times. I2C slave functionality is
not supported.
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