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XRT83SL28 Datasheet(PDF) 11 Page - Exar Corporation |
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XRT83SL28 Datasheet(HTML) 11 Page - Exar Corporation |
11 / 47 page xr XRT83SL28 REV. 1.0.0 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT 9 POWER AND GROUND (HOST AND HARDWARE MODES) NAME PIN TYPE DESCRIPTION TVDD7 TVDD6 TVDD5 TVDD4 TVDD3 TVDD2 TVDD1 TVDD0 79 83 98 102 30 26 11 7 PWR Transmit Analog Power Supply (3.3V ±5%) TVDD can be shared with DVDD. However, it is recommended that TVDD be isolated from the analog power supply RVDD. For best results, use an internal power plane for isolation. If an internal power plane is not available, a ferrite bead can be used. Each power supply pin should be bypassed to ground through an external 0.1 µF capacitor. RVDD2 RVDD1 127 54 PWR Receive Analog Power Supply (3.3V ±5%) RVDD should not be shared with other power supplies. It is recommended that RVDD be isolated from the digital power supply DVDD and the analog power supply TVDD. For best results, use an internal power plane for isolation. If an internal power plane is not available, a ferrite bead can be used. Each power supply pin should be bypassed to ground through an external 0.1 µF capacitor. DVDD2 DVDD1 DVDDcore 129 52 93 PWR Digital Power Supply (3.3V ±5%) DVDD should be isolated from the analog power supplies except for TVDD. For best results, use an internal power plane for isolation. If an internal power plane is not available, a ferrite bead can be used. Every two DVDD power sup- ply pins should be bypassed to ground through at least one 0.1 µF capacitor. AVDD 16 PWR Analog Power Supply (3.3V ±5%) AVDD should be isolated from the digital power supplies. For best results, use an internal power plane for isolation. If an internal power plane is not available, a ferrite bead can be used. Each power supply pin should be bypassed to ground through at least one 0.1 µF capacitor. TGND7 TGND6 TGND5 TGND4 TGND3 TGND2 TGND1 TGND0 77 85 96 104 32 24 13 5 GND Transmit Analog Ground It’s recommended that all ground pins of this device be tied together. RGND2 RGND1 126 55 GND Receive Analog Ground It’s recommended that all ground pins of this device be tied together. DGND2 DGND1 DGNDcore 128 53 88 GND Digital Ground It’s recommended that all ground pins of this device be tied together. AGND 18 GND Analog Ground It’s recommended that all ground pins of this device be tied together. |
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