AT43USB326 datasheet(74/102 Pages) ATMEL

74 / 102 page

AT43USB326

3313D–USB–04/06

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.

Remote Wake-up,

Downstream Ports

The hardware detects a connect/disconnect/port resume and propagates resume signaling

upstream. Finally, the hardware enables the oscillator and asserts the RSM interrupt.

Remote Wake-up,

Embedded Function

The hardware detects an INT0/INT1 and propagates resume signaling upstream. Finally, the

hardware enables the oscillator and asserts the RSM and FRWUP interrupts.

Hardware

Firmware

1.Host resumes signaling

Resume signaling detected

Propagate signaling downstream

Enable oscillator

Set RSM bit

→ interrupt

Reset RSM and GBL SUSP bits

Restore GPIO states if required

Clear UOVCER bit 2

Enable peripheral activity

Hardware

Firmware

Connect/disconnect/port resume

detected

Propagate resume signaling

Enable Oscillator

Set RSM bit

→ interrupt

Reset RSM and GBL SUSP bits

Restore GPIO states if required

Clear UOVCER bit 2

Enable peripheral activity

Hardware

Firmware

1.External event activates INT0/INT1

Propagate resume signaling

Enable Oscillator

Set RSM and FRMWUP bits

→

interrupt

Clear GLB SUSP, RSM, FRMWUP bits

Restore GPIO states if required

Clear UOVCER bit 2

Enable peripheral activity

AT43USB326 датащи(PDF) 74 Page - ATMEL Corporation

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