- 您现在的位置：买卖IC网 > PDF目录380730 > ST92163N4G0 (意法半导体) 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT PDF资料下载
参数资料
| 型号： | ST92163N4G0 |
| 厂商： | 意法半导体 |
| 英文描述： | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| 中文描述： | 16位产品全速USB微控制器16端点，20,000光盘和2K的RAM，I2C和脊髓损伤的复合设备， |
| 文件页数： | 136/224页 |
| 文件大小： | 1372K |
| 代理商： | ST92163N4G0 |
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页第135页当前第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页第189页第190页第191页第192页第193页第194页第195页第196页第197页第198页第199页第200页第201页第202页第203页第204页第205页第206页第207页第208页第209页第210页第211页第212页第213页第214页第215页第216页第217页第218页第219页第220页第221页第222页第223页第224页
136/224
ST92163 - USB PERIPHERAL (USB)
USB INTERFACE (
Cont’d
)
8.3.3.1 DMA transfer
DMA descriptors for each endpoint, located in the
ST9 register file, indicate where the related mem-
ory buffer is located in RAM, how large the allocat-
ed bufferis and how many bytes must be transmit-
ted. Whena data transfer takes place, the USB-FS
buffering data loaded in an internal 8 byte long
FIFO buffer, and performing Burst-DMA transfers
as appropriate. Then, if needed, the proper hand-
shake answeris generated orexpected, according
to the direction of the transfer. At the end of the
transaction, an interrupt is generated: using status
registers and different interrupt vectors, the micro-
controller can determine which endpoint was
served, which type of transaction took place, if er-
rors occurred (bit stuffing, format, CRC, protocol,
missing ACK, over/underrun, etc...).
8.3.3.2 Structure and usage of DMA buffers
Each endpoint has two DMA buffers (onefor trans-
mission and the other for reception) whose size
may be up to 1023 bytes each. They can be
placed anywhere in memory (internally or exter-
nally).
For each endpoint, eight Register File locations
are used:
ADDRn_TH
and
ADDRn_TL
: These registers
point to the starting address of the memory buffer
containing thedata to be transmitted byendpoint n
at the next IN token addressed to it.
COUNTn_TL and COUNTn_TH
: These registers
contain the number of bytes to be transmitted by
endpoint n at the next IN token addressed to it.
ADDRn_RL and ADDRn_RH
: These registers
point to the starting address of the memory buffer
which will contain the data received by endpoint n
at the next OUT/SETUP token addressed to it.
COUNTn_RL and COUNTn_RH:
These registers
contain the allocated buffer size for endpoint n re-
ception, setting the maximum number of bytes the
related endpoint can receive with the next OUT/
SETUP transaction.
Other register locations related to unsupported
transfer directions or unused endpoints, are avail-
able to the user. Isochronous endpoints have a
special way of handling DMA buffers.
The relationship between register file locations
and memory buffer areas is depicted in Figure 70.
Each DMA buffer is used starting from the bottom,
either during reception or transmission.
The USB interface never changes the contents of
memory locations adjacent to the DMA memory
buffers; even if a packet bigger than the allocated
buffer length is received (buffer overrun condition)
the data will be copied in memory only up to the
last available location.
相关PDF资料 |
PDF描述 |
|---|---|
| ST92163N4G0V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163R4G0V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163R4T1V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92E163R4T1V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92T163R4T1V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST92163N4G0E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G0L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G0V | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
发布紧急采购，3分钟左右您将得到回复。