sta2416 STMicroelectronics, sta2416 Datasheet - Page 31

• Manufacturer Part Number: sta2416
• Description: Bluetooth?? Baseband With Integrated Flash
• Manufacturer: STMicroelectronics

STA2416
6.5
6.6
6.7
Figure 11. USB interface
The USB device registers and FIFOs are memory mapped. The USB driver will use these
registers to access the USB interface. The equivalent exists for the HCI communication over
UART.
For transmission to the host, the USB and Serial Drivers interface with the hardware via a
set of registers and FIFOs, while in the other direction, the hardware may trigger the drivers
through a set of interrupts (identified by the RTOS, and directed to the appropriate driver
routines).
JTAG interface
The JTAG interface is compliant with the JTAG IEEE Standard 1149.1. Its allows both the
boundary scan of the digital pins and the debug of the ARM7TDMI
connected with the standard ARM7
RF interface
The STA2416 radio interface is compatible to BlueRF (unidirectional RxMode2 for data and
unidirectional serial interface for control).
PCM voice interface
The voice interface is a direct PCM interface to connect to a standard codec (for example,
STA529) including internal decimator and interpolator filters. The data can be linear PCM
(13 to 16-bit), µ-law (8-bit) or A-law (8-bit). By default the codec interface is configured as
master. The encoding on the air interface is programmable to be CVSD, A-law or µ-law.
The PCM block is able to manage the PCM bus with up to three timeslots.
In master mode, PCM clock and data can operate at 2 MHz or at 2.048 MHz to allow
interfacing of standard codecs.
REGISTERS
DEVICE
FIFOs
USB
USB TRANSPORT LAYER
USB DRIVER
®
IRQ
IRQ
development tools.
STA2416 HW
HCI
UART TRANSPORT LAYER
SERIAL DRIVER
RTOS
®
REGISTERS
application when
DEVICE
FIFOs
UART
Interfaces
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