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VSC7173

Data Sheet

Revision 4.1

May 23, 2005

Confidential

Figure 8. Timing Waveform for Port Switching

Table 10. Port Switch Timing

Symbol

Parameter

Minimum

Maximum

Unit

Condition

Pulse width of the port selection pins

(PORTSEL0, PORTSEL1).

4.0

ns

Separation between rising edge transitions of the

port selection pins.

5.0

ns

Edge-sensitive operation

Switch time. The time required to make the other

host port active following an active edge

transition of the port selection pins.

5.0

ns

Applies to both level and

edge-sensitive operations

PORTSEL0

Active Host Port

(Port 0 or Port 1)

PORTSEL1

* Edge sensitive sideband operation shown in timing diagram.

t

PSS

t

PSS

t

SW

t

SW

t

SW

t

PW

PORTSEL0,

PORTSEL1

t

PW

Note: Edge-sensitive operation shown.