STEVAL-ISB005V1 STMicroelectronics, STEVAL-ISB005V1 Datasheet - Page 89
STEVAL-ISB005V1
Manufacturer Part Number
STEVAL-ISB005V1
Description
BOARD EVAL CHARGER ST7260/L6924D
Manufacturer
STMicroelectronics
Type
Battery Managementr
Specifications of STEVAL-ISB005V1
Main Purpose
Power Management, Battery Charger
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
L6924, ST72F63BK6M1
Primary Attributes
1 Cell- Li-Ion / Li-Pol, 5 V (USB Input)
Secondary Attributes
Powered by Wall Adaptor Also, LED Status Indicators
Input Voltage
5 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
L6924D, ST7260
Other names
497-8428
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Manufacturer
Quantity
Price
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ST7260xx
14
14.1
14.2
14.3
USB interface (USB)
Introduction
The USB Interface implements a low-speed function interface between the USB and the
ST7 microcontroller. It is a highly integrated circuit which includes the transceiver, 3.3
voltage regulator, SIE and DMA. No external components are needed apart from the
external pull-up on USBDM for low speed recognition by the USB host. The use of DMA
architecture allows the endpoint definition to be completely flexible. Endpoints can be
configured by software as in or out.
Main features
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Functional description
The block diagram in
For general information on the USB, refer to the “Universal Serial Bus Specifications”
document available at http//:www.usb.org.
Serial interface engine
The SIE (Serial Interface Engine) interfaces with the USB, via the transceiver.
The SIE processes tokens, handles data transmission/reception, and handshaking as
required by the USB standard. It also performs frame formatting, including CRC generation
and checking.
Endpoints
The Endpoint registers indicate if the microcontroller is ready to transmit/receive, and how
many bytes need to be transmitted.
DMA
When a token for a valid Endpoint is recognized by the USB interface, the related data
transfer takes place, using DMA. At the end of the transaction, an interrupt is generated.
Interrupts
By reading the Interrupt Status register, application software can know which USB event has
occurred.
USB specification version 1.1 compliant
Supports Low-Speed USB protocol
Two or three Endpoints (including default one) depending on the device (see device
feature list and register map)
CRC generation/checking, NRZI encoding/decoding and bit-stuffing
USB Suspend/Resume operations
DMA data transfers
On-chip 3.3V regulator
On-chip USB transceiver
Figure
41, gives an overview of the USB interface hardware.
USB interface (USB)
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