Data Sheet

HSBT3007 module_datasheet

CONFIDENTIAL Version2.0– Jul. 13

HANSONG ( NANJING) TECHNOLOGY CO.,LTD

3 Interfaces

3.1 USB Interface

HSBT3007 has a full-speed (12 Mbps) USB interface for communicating with other compatible

digital devices.

The USB interface on HSBT3007 acts as a USB peripheral, responding to requests from a

master host controller.

HSBT3007 contains internal USB termination resistors and requires no external resistors.

HSBT3007 supports the Universal Serial Bus Specification, Revision v2.0 (USB v2.0

Specification), supports USB standard charger detection, and fully supports the USB Battery

Charging Specification v1.2.

As well as describing USB basics and architecture, the application note describes:

■ Power distribution for high and low bus-powered configurations

■ Power distribution for self-powered configuration, which includes USB VBUS monitoring

■ USB enumeration

■ Electrical design guidelines for the power supply and data lines, as well as PCB tracks and

the effects of ferrite beads

■ USB suspend support

■ Battery charging from USB, which describes dead battery provision, charge currents,

charging in suspend modes, and USB VBUS voltage consideration

■ USB termination when interface is not in use

■ Internal modules, certification, and non-specification compliant operation

3.2 UART Interface

HSBT3007 has a UART serial interface that provides a simple mechanism for communicating

with other serial devices using the RS232 protocol, including for test and debug. The UART

interface is multiplexed with PIOs and other functions, and hardware flow control is optional.

When HSBT3007 is connected to another digital device, UART_RX and UART_TX transfer

data between the 2 devices. The remaining 2 signals, UART_CTS and UART_RTS, implement

optional RS232 hardware flow control where both are active low indicators.

UART configuration parameters, such as baud rate and packet format, are set using the

HSBT3007 firmware.

HANSONG