AT43USB320A-AC Atmel, AT43USB320A-AC Datasheet - Page 98

• Manufacturer Part Number: AT43USB320A-AC
• Description: IC USB MCU EMBED HUB AVR 100LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB320A-AC

• Applications: USB Hub/Microcontroller
• Core Processor: AVR
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: SPI Serial, USB, UART
• Number Of I /o: 32
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Type: -

Remote Wake-up,
Downstream Ports
Remote Wake-up,
Embedded Function
Selective Suspend,
Downstream Ports
98
AT43USB320A
The hardware detects a connect/disconnect/port resume and propagates resume signaling
upstream. Finally, the hardware enables the oscillator and asserts the RSM interrupt.
The hardware detects an INT0/INT1 and propagates resume signaling upstream. Finally, the
hardware enables the oscillator and asserts the RSM and FRWUP interrupts.
1. Connect/disconnect/port resume
2. Propagate resume signaling
3. Enable Oscillator
4. Set RSM bit → interrupt
2. Propagate resume signaling
3. Enable Oscillator
4. Set RSM and FRMWUP bits →
3. Suspend or resume port per
detected
interrupt
command
Hardware
Hardware
Hardware
1.External event activates INT0/INT1
5. Reset RSM and GBL SUSP bits
6. Restore GPIO states if required
7. Clear UOVCER bit 2
8. Enable peripheral activity
5. Clear GLB SUSP, RSM, FRMWUP bits
6. Restore GPIO states if required
7. Clear UOVCER bit 2
8. Enable peripheral activity
1. Set or Clear Port Feature
2. Write HPCON[2:0] and HPADD[2:0]
PORT_SUSPEND decoded
bits
Firmware
Firmware
Firmware
1443E–USB–4/04