STM32WBA62CG datasheet(69/185 Pages) STMICROELECTRONICS

69 / 185 page

DS14736 Rev 1

69/185

STM32WBA6xxx

Functional overview

–

Up to 16 interrupt plus isochronous transfer requests in the periodic hardware

queue

–

Up to 16 control plus bulk transfer requests in the nonperiodic hardware queue

•

Management of a shared Rx FIFO, a periodic Tx FIFO and a nonperiodic Tx FIFO for

efficient usage of the USB data RAM

Peripheral-mode features:

•

1 bidirectional control endpoint0

•

8 IN endpoints (EPs) configurable to support bulk, interrupt or isochronous transfers

•

8 OUT endpoints configurable to support bulk, interrupt or isochronous transfers

•

Management of a shared Rx FIFO and a Tx-OUT FIFO for efficient usage of the USB

data RAM

•

Management of up to 9 dedicated Tx-IN FIFOs (one for each active IN EP) to put less

load on the application

•

Support for the soft disconnect feature

3.36

Development support

3.36.1

Serial-wire/JTAG debug port (SWJ-DP)

The Arm SWJ-DP interface is embedded and is a combined JTAG and serial-wire debug

port that enables either a serial wire debug or a JTAG probe to be connected to the target.

Debug is performed using two pins only instead of five required by the JTAG (JTAG pins can

be re-used as GPIO with alternate function): the JTAG TMS and TCK pins are shared with

SWDIO and SWCLK, respectively, and a specific sequence on the TMS pin is used to

switch between JTAG-DP and SW-DP.

3.36.2

Embedded Trace Macrocell (ETM)

The Arm embedded trace macrocell (ETM) provides a greater visibility of the instruction and

data flow inside the CPU core by streaming compressed data at a very high rate from the

device through a small number of ETM pins to an external hardware trace port analyzer

(TPA) device.

Real-time instruction and data flow activity is recorded and then formatted for display on the

host computer that runs the debugger software. PTA hardware is commercially available

from common development tools vendors.

The ETM operates with third party debugger software tools.

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