9DB1904BKLF IDT [Integrated Device Technology], 9DB1904BKLF Datasheet
9DB1904BKLF
Related parts for 9DB1904BKLF
9DB1904BKLF Summary of contents
Page 1
... IREF 1 GNDA 2 VDDA 3 5 DIF_0 6 DIF_1 8 9DB1904BKLF GND 10 VDD 11 DIF_2 12 DIF_3 14 DIF_4 Power up default is all outputs in 1:1 mode/No SMBus programming Spread spectrum compatible/EMI reductions ...
Page 2
Output Differential Buffer for PCIe Gen2 and QPI Pin Description PIN # PIN NAME PIN TYPE 1 IREF 2 GNDA 3 VDDA 4 HIGH_BW# 5 100M_133M#_LV 6 DIF_0 7 DIF_0# 8 DIF_1 9 DIF_1# 10 GND 11 VDD ...
Page 3
Output Differential Buffer for PCIe Gen2 and QPI Pin Description (continued) PIN # PIN NAME PIN TYPE 37 OE9# 38 DIF_9 OUT 39 DIF_9# OUT 40 OE10# 41 DIF_10 OUT 42 DIF_10# OUT 43 OE11# 44 DIF_11 OUT ...
Page 4
Output Differential Buffer for PCIe Gen2 and QPI Functional Block Diagram OE(17_18)# 13 OE(15_16)# OE(14:5)#, OE_01234# CLK_IN CLK_IN# HIGH_BW# 100M_133M#_LV CKPWRGD_PD# SMB_A0 SMB_A1 SMB_A2_PLLBYP# SMBDAT SMBCLK Power Groups Pin Number VDD GND 3 2 11,27,47,63 10,28,46,64 9DB1904 Frequency ...
Page 5
Output Differential Buffer for PCIe Gen2 and QPI Electrical Characteristics - Absolute Maximum Ratings PARAMETER SYMBOL 3.3V Core Supply Voltage VDDA 3.3V Logic Supply Voltage VDD Input Low Voltage V IL Input High Voltage V IH Input High ...
Page 6
Output Differential Buffer for PCIe Gen2 and QPI Electrical Characteristics - Input/Supply/Common Parameters Supply Voltage VDD/VDDA = 3.3 V +/-5%, See Test Loads for Loading Conditions COM; PARAMETER SYMBOL Ambient Operating T COM Temperature Input ...
Page 7
Output Differential Buffer for PCIe Gen2 and QPI Electrical Characteristics - DIF 0.7V Current Mode Differential Outputs Supply Voltage VDD/VDDA = 3.3 V +/-5%, See Test Loads for Loading Conditions COM; PARAMETER SYMBOL Slew rate ...
Page 8
Output Differential Buffer for PCIe Gen2 and QPI Electrical Characteristics - Output Duty Cycle, Jitter, Skew and PLL Characterisitics Supply Voltage VDD = 3.3 V +/-5% COM; PARAMETER SYMBOL PLL Bandwidth BW PLL Jitter Peaking ...
Page 9
Output Differential Buffer for PCIe Gen2 and QPI Electrical Characteristics - Phase Jitter Parameters Supply Voltage VDD/VDDA = 3.3 V +/-5%, See Test Loads for Loading Conditions COM; PARAMETER SYMBOL t jphPCIeG1 t jphPCIeG2 Phase ...
Page 10
Output Differential Buffer for PCIe Gen2 and QPI Common Recommendations for Differential Routing L1 length, route as non-coupled 50ohm trace L2 length, route as non-coupled 50ohm trace L3 length, route as non-coupled 50ohm trace Rs Rt Down Device ...
Page 11
Output Differential Buffer for PCIe Gen2 and QPI Alternative Termination for LVDS and other Common Differential Signals (figure 3) Vdiff Vp-p Vcm 0.45v 0.22v 1.08 0.58 0.28 0.6 0.80 0.40 0.6 0.60 0.3 1.2 R1a = R1b = ...
Page 12
Output Differential Buffer for PCIe Gen2 and QPI SMB_A(2:0) = 000 SMB Adr: D0 9DB1904 SMB_A(2:0) = 001 SMB Adr: D2 9DB1904 SMB_A(2:0) = 010 SMB Adr: D4 9DB1904 SMB_A(2:0) = 011 SMB Adr: D6 9DB1904 SMB_A(2:0) = ...
Page 13
Output Differential Buffer for PCIe Gen2 and QPI General SMBus serial interface information for the 9DB1904B How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D4 • IDT clock will ...
Page 14
Output Differential Buffer for PCIe Gen2 and QPI SMBusTable: Reserved Register Byte 0 Pin # Name Bit 7 - Bit Bit 5 Bit 4 - Bit 3 - Bit Bit 1 Bit ...
Page 15
Output Differential Buffer for PCIe Gen2 and QPI SMBusTable: Output Enable Readback Register Byte 4 Pin # Name 69 Readback - OE17_18# Input Bit 7 Bit 6 60 Readback - OE15_16# Input Bit 5 Bit 4 54 Readback ...
Page 16
Output Differential Buffer for PCIe Gen2 and QPI SMBusTable: Control Pin Readback Register Byte 8 Pin # Name 5 Readback -100M_133M#_LV Bit 7 Bit 6 Bit 5 DIF_18 Bit 4 Bit 3 DIF_17 DIF_16 Bit 2 Bit 1 ...
Page 17
... Ordering Information Part / Order Number Shipping Packaging 9DB1904BKLF 9DB1904BKLFT Tape and Reel "LF" suffix to the part number are the Pb-Free configuration, RoHS compliant. "B" is the device revision designator (will not correlate with the datasheet revision). 19 Output Differential Buffer for PCIe Gen2 and QPI ® ...
Page 18
Output Differential Buffer for PCIe Gen2 and QPI Revision History Rev. Issue Date Description 0.1 7/1/2009 Initial release 0.2 7/8/2009 Updated revision ID in Byte 5 Updated electrical characteristics tables. A 9/21/2010 Added Test loads and terminations Corrected ...