User's Manual

Table Of Contents
ELECTRICAL DATA S3C2450X RISC MICROPROCESSOR
29-30
Table 29-19. USB Full Speed Output Buffer Electrical Characteristics
(VDDi = 1.3V± 0.05V (400MHz), VDDi = 1.2 V± 0.05V (533MHz), T
A
= -40 to 85°C, VDDA33x = 3.3V ± 0.3V)
Parameter Symbol Condition Min Max Unit
Driver Characteristics
Transition Time
Rise Time
Fall Time
T
R
T
F
CL = 50pF
CL = 50pF
4.0
4.0
20
20
ns
Rise/Fall Time Matching T
RFM
(TR / TF ) 90 110 %
Output Signal Crossover
Voltage
V
CRS
1.3 2.0 V
Drive Output Resistance Z
DRV
Steady state drive 28 43 ohm
Table 29-20. USB High Speed Output Buffer Electrical Characteristics
(VDDi = 1.3V± 0.05V (400MHz), VDDi = 1.2 V± 0.05V (533MHz), T
A
= -40 to 85°C, VDDA33x = 3.3V ± 0.3V)
Parameter Symbol Condition Min Max Unit
Driver Characteristics
Transition Time
Rising Time
Falling Time
T
R
T
F
500
500
ps
ps
Drive Output Resistance Z
DRV
Steady state drive 40.5 49.5 ohm
Table 29-21. High Speed SDMMC Interface Transmit/Receive Timing Constants
(VDDi = 1.3V± 0.05V (400MHz), VDDi = 1.2 V± 0.05V (533MHz), T
A
= -40 to 85°C, VDD_SD = 3.3V ± 0.3V)
Parameter Symbol Min Typ. Max Unit
SD Command output Delay time
t
SDCD
0.4 - 4.0 ns
SD Command input Setup time
t
SDCS
5.0 - - ns
SD Command input Hold time
t
SDCH
2.0 - - ns
SD Data output Delay time
t
SDDD
0.4 - 4.0 ns
SD Data input Setup time
t
SDDS
5.0 - - ns
SD Data input Hold time
t
SDDH
2.0 - - ns