E-STLC2416 STMicroelectronics, E-STLC2416 Datasheet - Page 29

• Manufacturer Part Number: E-STLC2416
• Manufacturer: STMicroelectronics

Specifications of E-STLC2416

• Lead Free Status / Rohs Status: Compliant

Interfaces
7.2.1
7.2.2
28/37
One application is a combination of a Bluetooth device with an AGILENT optical mouse
sensor to build a Bluetooth Mouse. The AGILENT device has an SPI interface with one bi-
directional data port.
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 address.
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 9.
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 10. 32-bit SPI
To support this application, the data size is 32 bits. The 32 bits support is implemented for
both transmit and receive.
Feature description: Agilent mode
Feature description: 32-bit SPI
Bluetooth
reception
STLC2416
Agilent mode
SPI slave mode 32 bits
spi_rxd
spi_txd
spi_clk
spi_frm
STLC2416
32 spi_clk
16 spi_clk
spi_txd
spi_r xd
spi_frm
spi_clk
SPI master mode 32 bits
STw5094A CODEC
spi_clk
Agilent ADNS-2030
spi_io
stereo headset
E-STLC2416