Hi-Speed USB Device PHY with UTMI Interface

Datasheet

Figure 8.8 Device Attach Behavior

Table 8.10 Attach and Reset Timing Values

TIMING

 

 

 

PARAMETER

DESCRIPTION

 

VALUE

 

 

 

 

T0

Vbus Valid.

0 (reference)

 

 

 

 

 

T1

Maximum time from Vbus valid to when the device

T0 + 100ms

< T1

 

must signal attach.

 

 

 

 

 

 

T2

Debounce interval. The device now enters the HS

T1 + 100ms

< T2

(HS Reset T0)

Detection Handshake protocol.

 

 

 

 

 

 

Revision 1.5 (11-15-07)

40

SMSC USB3280

 

DATASHEET