Ultra Fast USB 2.0 Multi-Slot Flash Media Controller

Datasheet

Note 7.9 The assignment of each Integrated Card Power FET to a designated Card Connector is controlled by both firmware and the specific board implementation. Firmware will default to the settings listed in Table 10.1, “USB2250/50i/51/51i GPIO Usage (ROM Rev 0x00),” on page 35.

Note 7.10 The 3.3V supply should be at least at 75% of its operating condition before the 1.8V supply is allowed to ramp up.

7.4Capacitance

TA = 25°C; fc = 1MHz; VDD, VDDP = 1.8V

Table 7.1 Pin Capacitance

 

 

 

LIMITS

 

 

 

 

 

 

 

 

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

TEST CONDITION

 

 

 

 

 

 

 

Clock Input Capacitance

CXTAL

 

 

2

pF

All pins (except USB pins

 

 

 

 

 

 

and pins under test) are tied

 

 

 

 

 

 

to AC ground.

 

 

 

 

 

 

 

Input Capacitance

CIN

 

 

10

pF

 

Output Capacitance

COUT

 

 

20

pF

 

Revision 1.1 (05-29-08)

32

SMSC USB2250/50i/51/51i

DATASHEET