USB4604 Datasheet, PDF (57/62 Pages) SMSC Corporation – USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

USB 2.0 HSIC Hi-Speed 4-Port Hub Controller
Datasheet
SYMBOL
t_fc
t_ceh
t_clq
t_dh
t_os
t_oh
t_ov
t_cel
t_ceh
Table 9.11 SPI Timing Values (60 MHz Operation)
DESCRIPTION
Clock frequency
Chip enable (SPI_CE_EN) high time
Clock to input data
Input data hold time
Output setup time
Output hold time
Clock to output valid
Chip enable (SPI_CE_EN) low to first clock
Last clock to chip enable (SPI_CE_EN) high
MIN
TYP
50
0
5
5
4
12
12
MAX
60
9
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
9.6
Clock Specifications
The device can accept either a 24 MHz crystal or a 24 MHz single-ended clock oscillator input. If the
single-ended clock oscillator method is implemented, XTAL1 should be left unconnected and REFCLK
should be driven with a clock that adheres to the specifications outlined in Section 9.6.2, "External
Reference Clock (REFCLK)".
9.6.1 Oscillator/Crystal
It is recommended that a crystal utilizing matching parallel load capacitors be used for the crystal
input/output signals (XTAL1I/XTAL2). See Table 9.12 for the recommended crystal specifications.
Table 9.12 Crystal Specifications
PARAMETER
SYMBOL
MIN
NOM
MAX
UNITS NOTES
Crystal Cut
Crystal Oscillation Mode
Crystal Calibration Mode
Frequency
Total Allowable PPM Budget
Operating Temperature Range
F_fund
AT, typ
Fundamental Mode
Parallel Resonant Mode
-
24.000
-
-
-
+/-350
Note 9.10
-
Note 9.11
MHz
PPM
o_C
Note 9.10 0^oC for commercial version, -40^oC for industrial version.
Note 9.11 +70^oC for commercial version, +85^oC for industrial version.
 2014 Microchip Technology Inc.
DS00001716A-page 57