- 您现在的位置：买卖IC网 > PDF目录69366 > ST72622L2T1 (STMICROELECTRONICS) 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44 PDF资料下载
参数资料
| 型号： | ST72622L2T1 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | TQFP-44 |
| 文件页数： | 115/134页 |
| 文件大小： | 815K |
| 代理商： | ST72622L2T1 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页当前第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页
ST7262
81/134
10.6 USB INTERFACE (USB)
10.6.1 Introduction
The USB Interface implements a low-speed func-
tion interface between the USB and the ST7 mi-
crocontroller. 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 config-
ured by software as in or out.
10.6.2 Main Features
s
USB Specification Version 1.1 Compliant
s
Supports Low-Speed USB Protocol
s
Two or Three Endpoints (including default one)
depending on the device (see device feature list
and register map)
s
CRC
generation/checking,
NRZI
encoding/
decoding and bit-stuffing
s
USB Suspend/Resume operations
s
DMA Data transfers
s
On-Chip 3.3V Regulator
s
On-Chip USB Transceiver
10.6.3 Functional Description
The block diagram in Figure 1, gives an overview
of the USB interface hardware.
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 transmis-
sion/reception, and handshaking as required by
the USB standard. It also performs frame format-
ting, including CRC generation and checking.
Endpoints
The Endpoint registers indicate if the microcontrol-
ler 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, applica-
tion software can know which USB event has oc-
curred.
Figure 45. USB Block Diagram
CPU
MEMORY
Transceiver
3.3V
Voltage
Regulator
SIE
ENDPOINT
DMA
INTERRUPT
Address,
and interrupts
USBDM
USBDP
USBVCC
6 MHz
REGISTERS
data buses
USBGND
1
相关PDF资料 |
PDF描述 |
|---|---|
| ST72621L4T1 | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44 |
| ST72632K2B1/XXX | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32 |
| ST72E631K4D0 | 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, PDIP32 |
| ST72633K1M1/XXX | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO34 |
| ST7263BK1M1/XXX | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO34 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST7263-EMU2 | 功能描述:仿真器/模拟器 ST7 Emulator Board RoHS:否 制造商:Blackhawk 产品:System Trace Emulators 工具用于评估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
| ST7265X-EVAL/MS | 制造商:STMicroelectronics 功能描述:ST6 EVAL BD - Bulk |
| ST7265X-EVAL/PFD | 制造商:STMicroelectronics 功能描述:USB FLASH EVAL - Bulk |
| ST7266 | 制造商:6940 功能描述:ST7266 |
| ST7267C8T1L | 制造商:STMicroelectronics 功能描述: |
发布紧急采购，3分钟左右您将得到回复。