AT43USB326-AC Atmel, AT43USB326-AC Datasheet - Page 74

• Manufacturer Part Number: AT43USB326-AC
• Description: IC USB KEYBOARD CTRLR HUB 48LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB326-AC

• Applications: Keyboard Controller
• Core Processor: AVR
• Program Memory Type: Mask ROM (16 kB)
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: USB
• 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: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Global Resume
Remote Wake-up,
Downstream Ports
Remote Wake-up,
Embedded Function
74
AT43USB326
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.
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.
2. Resume signaling detected
3. Propagate signaling downstream
4. Enable oscillator
5. Set RSM bit → interrupt
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 →
detected
interrupt
Hardware
Hardware
Hardware
1.External event activates INT0/INT1
1.Host resumes signaling
6. Reset RSM and GBL SUSP bits
7. Restore GPIO states if required
8. Clear UOVCER bit 2
9. Enable peripheral activity
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
Firmware
Firmware
Firmware
3313D–USB–04/06