sta2416 STMicroelectronics, sta2416 Datasheet - Page 36

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

Class-1 power support
9
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Class-1 power support
The chip can control an external power amplifier (PA). Several signals are duplicated on
GPIOs for this purpose in order to avoid digital/analogue noise loops in the radio.
A software controlled register enables the alternative functions of GPIO[15:11, 9:6] to
generate the signals for driving an external PA in a Bluetooth
application.
Each bit enables a dedicated signal on a GPIO pin, as described in
Table 14.
The signal BRXEN is the same as the RX_ON (GPIO6) output pin. The signal NOT_RXON
is the inverted signal, provided in order to save components on the application board.
PA7 to PA0 are the power amplifier control lines. They are managed, on a connection basis,
by the baseband core. The power level programmed for a certain Bluetooth
connection is managed by the firmware, as specified in the Bluetooth SIG specification.
The WLAN signals, as described in
collocated scenario on page
The WXTRA PCM sync signals, as described in
page
Involved GPIO
31, can be flexibly configured on GPIO pins to connect multiple codecs.
GPIO11
GPIO12
GPIO13
GPIO14
GPIO15
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIOs alternative functions
No dedicated function
WLAN 1
WLAN 2
WLAN 3
WLAN 4
Can be used for plug/unplug emulation in the case of USB connectivity
Power Class 1 RX_ON
Power Class 1 NOT_RXON
Power Class 1 PA0 or PCM sync 1
Power Class 1 PA1 or PCM sync 2
Power Class 1 PA3
Power Class 1 PA4
Power Class 1 PA5
Power Class 1 PA6
Power Class 1 PA7
26, can be enabled on GIPIO pins
Section 5.12: Bluetooth®, WLAN coexisting in
Section 6.7: PCM voice interface on
Description
®
technology class-1 power
Table
14.
®
technology
STA2416