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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 |
| 文件頁數(shù)： | 97/115頁 |
| 文件大?。?/td> | 722K |
| 代理商： | AT43USB320A-AC |
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97
AT43USB320A
1443E–USB–4/04
rupt to the microcontroller. The microcontroller starts executing where it left off and services
the interrupt. As part of the ISR, the firmware clears the GLB SUSP bit.
At completion of RESUME signaling, the USB hardware sets the Port Suspend Status Change
bits of the Hub Port Status Change Registers.
Selective Suspend
and Resume
See “Hub Port Control Register – HPCON” on page 89.
Suspend and Resume
Process
Global Suspend
The Host stops sending packets, the hardware detects this as global suspend signaling and
stops all downstream signaling. Finally, the hardware asserts the GLB_SUSP interrupt.
Global Resume
The Host resumes signaling, the hardware detects this as global resume and propagates this
signaling to all downstream ports. Finally, the hardware enables the oscillator and asserts the
RSM interrupt.
Hardware
Firmware
1.Host stops sending packets
2.
Global suspend signaling detected
3.
Stop downstream signaling
Set GBL SUS bit
→
interrupt
4.
5.
Shut down any peripheral activity
6.
Set Sleep Enable and Sleep Mode bits
of MCUCR
Set GPIO to low power state if required
7.
8.
Set UOVCER bit 2
9.
Execute SLEEP instruction
10. SLEEP bit detected
11. Shut off oscillator
Hardware
Firmware
1.Host resumes signaling
2.
Resume signaling detected
3.
Propagate signaling downstream
4.
Enable oscillator
Set RSM bit
→
interrupt
5.
6.
Reset RSM and GBL SUSP bits
7.
Restore GPIO states if required
8.
Clear UOVCER bit 2
9.
Enable peripheral activity
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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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