XRS10L620 Datasheet, PDF (45/49 Pages) Exar Corporation – PCI-X to 2-SATA/1-PATA Host Controller

connector.
XRS10L620 Rev 1.00
9. Separate analog power island on top layer for VDDA1,VDDA2,VDDA3, etc… via used to connect to the ferrite bead
should be placed close to device power pins.
10. It is recommended that Analog power supplies VDDA should be isolated from the core VDD1.8V power plane through a
noise suppression ferrite bead, which should provide 30dB or more attenuation for frequency less than 650 MHz.
11. Put decoupling capacitors with value of both 0.1uF and 0.01uF after ferrite bead. Place all decoupling capacitors as close
to the device pins as possible.
12. A Ground plane should be on layer 2, the Ground plane should be solid underneath the high speed differential pairs to
provide good return path.
13. Put enough Ground stitches throughout the board.
14. Each digital ground pin (GND) must have solid connection with PCB GND plane by at least 2 vias or other traces with
it.
15. Signals should avoid crossing the split power planes. If have to, add some bypass capacitors across the split planes. For
example, if some signals across 1.8V and 3.3V planes on the adjacent layer, then put a 0.1uF capacitor connecting 1.8V
and 3.3V near the signals.
9. Electrical Characteristics
Specifications are for Commercial Temperature range, 0°C to +70°C, unless otherwise specified.
9.1 Absolute Maximum Ratings
Symbol
Parameter
Ratings
Unit
VDD33
I/O Supply Voltage
3.7
V
VDD18
Core Supply Voltage
1.98
V
VDDA Analog Supply Voltage
1.98
V
Vin
Input Voltage
-0.3 ~ VDD33+0.3
V
Tstg
Storage Temperature
-55 ~ 125
°C
HBM
ESD capability – HBM
2000
V
MM
ESD capability - MM
200
V
9.2 Typical Operating Condition
Parameter
Min. Typ. Max. Unit
Operating Temperature -10
70 °C
Digital IO (VDD33)
3.14 3.3 3.63 V
Digital Core (VDD18)
1.75 1.8 1.98 V
SATA PHY (VDDA)
1.75 1.8 1.98 V
Note
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1/20/2009