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參數(shù)資料
| 型號(hào)： | AT43USB320A-AC |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Full-speed USB Microcontroller with an Embedded Hub |
| 中文描述： | 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, MS-026AED, LQFP-100 |
| 文件頁(yè)數(shù)： | 17/115頁(yè) |
| 文件大小： | 722K |
| 代理商： | AT43USB320A-AC |
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17
AT43USB320A
1443E–USB–4/04
All AT43USB320A I/O and peripherals, except for the USB hardware registers, are placed in
the I/O space. The I/O locations are accessed by the IN and OUT instructions transferring data
between the 32 general purpose working registers and the I/O space. I/O registers within the
address range $00 – $1F are directly bit-accessible using the SBI and CBI instructions. In
these registers, the value of single bits can be checked by using the SBIS and SBIC instruc-
tions. Refer to the instruction set documentations of the AVR for more details. When using the
I/O specific commands, IN and OUT, the I/O address $00 – $3F must be used. When address-
ing I/O registers as SRAM, $20 must be added to this address. All I/O register addresses
throughout this document are shown with the SRAM address in parentheses.
For compatibility with future devices, reserved bits should be written to zero if accessed.
Reserved I/O memory addresses should never be written.
USB Hub
A block diagram of the USB hardware of the AT43USB320A is shown in Figure 3. The USB
hub of the AT43USB320A has 5 downstream ports. The embedded function is permanently
attached to Port 5. Ports 1 through 4 are available as external ports. The actual number of
ports used is strictly defined by the firmware of the AT43USB320A and can vary from 0 to 4.
Because the exact configuration is defined by firmware, ports 1 to 4 may even function as per-
manently attached ports as long as the Hub Descriptor identifies them as such.
USB Function
The embedded USB function has its own device address and has a default endpoint plus 2
other programmable endpoints with 8-byte FIFOs. Endpoints 1 - 3 can be programmed as
interrupt IN or OUT or bulk IN or OUT endpoints.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT43USB321 | Full-speed USB Hub/Function Microcontroller |
| AT43USB325E-AC | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB325E-AU | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB326-AC | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB326-AU | Multimedia USB Keyboard Controller with Embedded Hub |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43USB321 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Hub/Function Microcontroller |
| AT43USB324AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER |
| AT43USB324YC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER |
| AT43USB325 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
| AT43USB325_05 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub |
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