User's Manual

60-2230C
Datasheet
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
27
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Symbol Parameter Condition Min. Typ. Max. Unit
C
CARD ≦10pF (1 card)
T IH
Input hold time
C CARD ≦10pF (1 card)
DDR50 0.8 -- -- ns
CMD Output (referenced to clock rising and failing edge)
T ODLY
Output delay time during data transfer
mode
C L ≦ 30pF (1card)
DDR50 -- -- 13.7 ns
T OHLD
Output hold time
C L ≥15pF (1 card)
DDR50 1.5 -- -- ns
DAT[3:0] Input (referenced to clock rising and failing edges)
T IS2X
Input setup time
C CARD ≦10pF (1 card)
DDR50 3 -- -- ns
T IH2X
Input hold time
C CARD ≦10pF (1 card)
DDR50 0.8 -- -- ns
DAT[3:0] Output (referenced to clock rising and failing edges)
T ODLY2X (max)
Output delay time during data transfer
mode
C L ≦ 25pF (1card)
DDR50 -- -- 7.0 ns
T ODLY2X (min)
Output hold time
C L ≥15pF (1 card))
DDR50 1.5 -- -- ns
11. USB S PECIFICATIONS
11.1 USB LS Driver and Receiver Parameters
Table 19:
Notes: Over full range of values specified in the Recommended Operating Conditions unless otherwise
specified.
The load is 100Ω differential for these parameters, unless other specified.
Table 15: USB LS Driver and Receiver Specifications
Symbol Parameter Min. Typ. Max. Unit
BR Baud rate - 1.5 - Mbps
BR PPM Baud rate tolerance -15000 - 15000 ppm
Driver Specifications
V OH
Output signal ended high
Defined with 1.425KΩ pull-up resistor to 3.6V
2.8 - 3.6 V
V OL
Output signal ended low
Defined with 1.425KΩ pull-up resistor to ground
0.0 - 0.3 V
V CRS Output signal crossover voltage 1.3 2.0 V