PDF 9DBU0441 Data sheet ( Hoja de datos )

Número de pieza	9DBU0441
Descripción	4 O/P 1.5V PCIe Gen1-2-3 ZDB/FOB
Fabricantes	IDT
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No Preview Available ! 4 O/P 1.5V PCIe Gen1-2-3 ZDB/FOB w/Zo=100ohms 9DBU0441 DATASHEET Description The 9DBU0441 is a member of IDT's 1.5V Ultra-Low-Power (ULP) PCIe family. It has integrated output terminations providing Zo=100 for direct connection to 100 transmission lines. The device has 4 output enables for clock management, and 3 selectable SMBus addresses. Recommended Application 1.5V PCIe Gen1-2-3 Zero-Delay/Fan-out Buffer (ZDB/FOB) Output Features • 4 – 1-167MHz Low-Power (LP) HCSL DIF pairs w/ZO=100 Key Specifications • DIF cycle-to-cycle jitter <50ps • DIF output-to-output skew <75ps • DIF phase jitter is PCIe Gen1-2-3 compliant • DIF bypass mode additive phase jitter is <300fs rms for PCIe Gen3 • DIF bypass mode additive phase jitter <350fs rms for 12k-20MHz Block Diagram Features/Benefits • Direct connection to 100 transmission lines; saves 16 resistors compared to standard HCSL outputs • 45mW typical power consumption in PLL mode; eliminates thermal concerns • Spread Spectrum (SS) compatible; allows SS for EMI reduction • OE# pins; support DIF power management • HCSL-compatible differential input; can be driven by common clock sources • SMBus-selectable features; optimize signal integrity to application • slew rate for each output • differential output amplitude • Pin/software selectable PLL bandwidth and PLL Bypass; optimize PLL to application • Outputs blocked until PLL is locked; clean system start-up • Device contains default configuration; SMBus interface not required for device control • 3.3V tolerant SMBus interface works with legacy controllers • Three selectable SMBus addresses; multiple devices can easily share an SMBus segment • Space saving 32-pin 5x5mm VFQFPN; minimal board space vOE(3:0)# 4 CLK_IN CLK_IN# vSADR ^vHIBW_BYPM_LOBW# ^CKPWRGD_PD# SDATA_3.3 SCLK_3.3 SS- Compatible PLL CONTROL LOGIC DIF3 DIF2 DIF1 DIF0 9DBU0441 REVISION C 04/22/15 1 ©2015 Integrated Device Technology, Inc. 1 page 9DBU0441 DATASHEET Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the 9DBU0441. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. PARAMETER SYMBOL CONDITIONS Supply Voltage VDDx Input Voltage VIN Input High Voltage, SMBus VIHSMB Storage Temperature Ts SMBus clock and data pins Junction Temperature Tj Input ESD protection ESD prot Human Body Model 1Guaranteed by design and characterization, not 100% tested in production. 2 Operation under these conditions is neither implied nor guaranteed. 3 Not to exceed 2.0V. MIN -0.5 -0.5 -65 2000 TYP MAX 2 VDD+0.5 3.3 150 125 UNITS NOTES V 1,2 V 1,3 V1 °C 1 °C 1 V1 Electrical Characteristics–Clock Input Parameters TA = TAMB, Supply Voltages per normal operation conditions, See Test Loads for Loading Conditions PARAMETER SYMBOL CONDITIONS MIN Input Common Mode Voltage - DIF_IN VCOM Common Mode Input Voltage 200 Input Swing - DIF_IN Input Slew Rate - DIF_IN VSWING dv/dt Differential value Measured differentially 300 0.4 Input Leakage Current IIN VIN = VDD , VIN = GND Input Duty Cycle dtin Measurement from differential wavefrom Input Jitter - Cycle to Cycle JDIFIn Differential Measurement 1 Guaranteed by design and characterization, not 100% tested in production. 2 Slew rate measured through +/-75mV window centered around differential zero -5 45 0 TYP 50 MAX 725 1450 8 5 55 150 UNITS NOTES mV 1 mV V/ns uA % ps 1 1,2 1 1 REVISION C 04/22/15 5 4 O/P 1.5V PCIE GEN1-2-3 ZDB/FOB W/ZO=100OHMS 5 Page 9DBU0441 DATASHEET SMBus Table: Output Enable Register 1 Byte 0 Name Control Function Type 0 Bit 7 Reserved Bit 6 DIF OE3 Output Enable RW Low/Low Bit 5 DIF OE2 Output Enable RW Low/Low Bit 4 Reserved Bit 3 DIF OE1 Output Enable RW Low/Low Bit 2 Reserved Bit 1 DIF OE0 Output Enable RW Low/Low Bit 0 Reserved 1. A low on these bits will overide the OE# pin and force the differential output Low/Low 1 Enabled Enabled Enabled Enabled Default 1 1 1 1 1 1 1 1 SMBus Table: PLL Operating Mode and Output Amplitude Control Register Byte 1 Name Control Function Type 0 1 Bit 7 Bit 6 PLLMODERB1 PLLMODERB0 PLL Mode Readback Bit 1 PLL Mode Readback Bit 0 R R See PLL Operating Mode Table Bit 5 PLLMODE_SWCNTRL Enable SW control of PLL Mode RW Values in B1[7:6] Values in B1[4:3] set PLL Mode set PLL Mode Bit 4 Bit 3 PLLMODE1 PLLMODE0 PLL Mode Control Bit 1 PLL Mode Control Bit 0 RW1 RW1 See PLL Operating Mode Table Bit 2 Reserved Bit 1 Bit 0 AMPLITUDE 1 AMPLITUDE 0 Controls Output Amplitude RW RW 00 = 0.55V 10= 0.75V 01 = 0.65V 11 = 0.85V 1. B1[5] must be set to a 1 for these bits to have any effect on the part. Default Latch Latch 0 0 0 1 1 0 SMBus Table: DIF Slew Rate Control Register Byte 2 Name Control Function Bit 7 Reserved Bit 6 SLEWRATESEL DIF3 Slew Rate Selection Bit 5 SLEWRATESEL DIF2 Slew Rate Selection Bit 4 Reserved Bit 3 SLEWRATESEL DIF1 Slew Rate Selection Bit 2 Reserved Bit 1 SLEWRATESEL DIF0 Slew Rate Selection Bit 0 Reserved Type RW RW RW RW 0 Slow Setting Slow Setting Slow Setting Slow Setting 1 Fast Setting Fast Setting Fast Setting Fast Setting Default 1 1 1 1 1 1 1 1 SMBus Table: Frequency Select Control Register Byte 3 Name Control Function Bit 7 Reserved Bit 6 Reserved Bit 5 Reserved Bit 4 Reserved Bit 3 Reserved Bit 2 Bit 1 Bit 0 SLEWRATESEL FB Reserved Reserved Adjust Slew Rate of FB Type RW 0 Slow Setting 1 Fast Setting Default 1 1 0 0 0 1 1 1 Byte 4 is Reserved and reads back 'hFF REVISION C 04/22/15 11 4 O/P 1.5V PCIE GEN1-2-3 ZDB/FOB W/ZO=100OHMS 11 Page

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