XRT91L34 Ver la hoja de datos (PDF) - Exar Corporation
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XRT91L34 Datasheet PDF : 38 Pages
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XRT91L34
QUAD CHANNEL MULTIRATE STS-12/3/1 AND STM-4/1/0 SONET/SDH CDR
POWER AND GROUND
REV. 1.0.1
NAME
AVDD1.8
DVDD1.8
VDD_IO
GND_IO
GND
NC
TYPE
PIN
DESCRIPTION
PWR
42, 57, 58, 104, 105,
123
1.8V Analog Core Power Supply
AVDD1.8 should be isolated from DVDD1.8 and 3.3V VDD_IO
power supplies. For best results, use a ferrite bead along with an
internal power plane separation. The AVDD1.8 power supply pins
should have bypass capacitors to the nearest ground.
PWR
51, 112
1.8V Digital Core Power Supply
DVDD1.8 should be isolated from AVDD1.8 and 3.3V VDD_IO
power supplies. For best results, use an internal power plane
separation. The DVDD1.8 power supply pins should have bypass
capacitors to the nearest ground.
PWR
5, 6, 13, 14, 19, 20, 27,
28, 65, 66, 73, 74, 87,
88, 95, 96
3.3V Input/Output Bus Power Supply
These pins require a 3.3V potential voltage for properly biasing
the Differential LVDS/Differential LVPECL and LVCMOS/LVTTL
input and output pins.
VDD_IO should be isolated from the AVDD1.8 and DVDD1.8
Core power supplies. For best results, use a ferrite bead along
with an internal power plane separation. The VDD_IO power sup-
ply pins should have bypass capacitors to the nearest ground.
GND
7, 8, 15, 16, 17, 18, 25, Ground for 3.3V VDD Input/Output Power Supplies
26, 69, 70, 77, 78, 83, It is recommended that all ground pins of this device be tied
84, 91, 92
together.
GND
43, 52, 61, 62, 100, 101, Power Supply and Thermal Ground
110, 111, 121
It is recommended that all ground pins of this device be tied
together.
1, 2, 9, 10, 23, 24, 31, No Connect
32, 97, 128
10
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