9DB1200C IDT [Integrated Device Technology], 9DB1200C Datasheet

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9DB1200C

Manufacturer Part Number
9DB1200C
Description
Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM
Manufacturer
IDT [Integrated Device Technology]
Datasheet

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Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI,
and FBDIMM
Description
DB1200 Rev 2.0 Intel Yellow Cover Device
General Description
The ICS9DB1200 is an Intel DB1200 Differential Buffer
Specification device. This buffer provides 12 differential clocks
at frequencies ranging from 100MHz to 400 MHz. The
ICS9DB1200 is driven by a differential output from a CK410B+
or CK509B main clock generator.
Output Features
Functional Block Diagram
IDT
®
Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM
12 - 0.7V current-mode differential output pairs.
Supports zero delay buffer mode and fanout mode.
Bandwidth programming available.
100-400 MHz operation in PLL mode
33-400 MHz operation in Bypass mode
SRC_IN
SRC_IN#
FS(2:0)
HIGH_BW#
BYPASS#/PLL
VTTPWRGD#/PD
ADR_SEL
SMBDAT
SMBCLK
OE_(11:0)#
12
CONTROL
LOGIC
COMPATIBLE
SPREAD
PLL
1
Features/Benefits
Key Specifications
M
U
X
3 selectable SMBus addresses for easy system expansion
Spread spectrum modulation tolerant, 0 to -0.5% down
spread and +/- 0.25% center spread
Supports undriven differential outputs in Power Down Mode
for power management.
Output cycle-cycle jitter < 50ps.
Output to output skew: 50ps
Phase jitter: PCIe Gen2 < 3.1ps rms
Phase jitter: QPI < 0.5ps rms
64-pin TSSOP Package
Available in RoHS compliant packaging
12
IREF
DIF(11:0))
9DB1200C
DATASHEET
1414F—06/30/10

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9DB1200C Summary of contents

Page 1

... Output cycle-cycle jitter < 50ps. • Output to output skew: 50ps • Phase jitter: PCIe Gen2 < 3.1ps rms • Phase jitter: QPI < 0.5ps rms • 64-pin TSSOP Package • Available in RoHS compliant packaging SPREAD COMPATIBLE PLL CONTROL LOGIC 1 DATASHEET 9DB1200C 12 DIF(11:0)) IREF 1414F—06/30/10 ...

Page 2

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Pin Configuration Frequency Select Table B0b2 B0b1 B0b0 (2:0) are 3.3V tolerant low-threshold inputs. L Please see VIL_FS and VIH_FS specifications in the Input/Supply/Common Output Parameters Table for correct values ...

Page 3

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Pin Description PIN # PIN NAME 1 VDD 2 DIF_IN 3 DIF_IN# 4 GND 5 OE0# 6 DIF_0 7 DIF_0# 8 VDD 9 GND 10 OE1# 11 DIF_1 12 DIF_1# 13 OE2# 14 DIF_2 15 DIF_2# 16 GND 17 VDD 18 OE3# 19 DIF_3 20 DIF_3# 21 OE4# 22 DIF_4 23 DIF_4# 24 VDD 25 GND ...

Page 4

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Pin Description PIN # PIN NAME 33 SMBDAT 34 FS1 35 BYPASS#/PLL 36 VTTPWRGD#/PD 37 DIF_6# 38 DIF_6 39 OE6# 40 GND 41 VDD 42 DIF_7# 43 DIF_7 44 OE7# 45 DIF_8# 46 DIF_8 47 OE8# 48 VDD 49 GND 50 DIF_9# 51 DIF_9 52 OE9# 53 DIF_10# 54 DIF_10 55 OE10# ...

Page 5

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Absolute Max Symbol Parameter VDDA 3.3V Core Supply Voltage VDD 3.3V Logic Supply Voltage V Input Low Voltage IL V Input High Voltage IH Ts Storage Temperature Tambient Ambient Operating Temp Tcase Case Temperature Input ESD protection ...

Page 6

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Electrical Characteristics - Clock Input Parameters 70°C; Supply Voltage V = 3.3 V +/- PARAMETER SYMBOL Input High Voltage - V IHDIF DIF_IN Input Low Voltage - V ILDIF DIF_IN Input Common Mode V COM Voltage - DIF_IN Input Amplitude - DIF_IN ...

Page 7

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Electrical Characteristics - Phase Jitter PARAMETER SYMBOL Jitter, Phase tjphase Notes on Phase Jitter: 1 See http://www.pcisig.com for complete specs. Guaranteed by design and characterization, not tested in production. 2 Device driven by 932S421BGLF or equivalent 3 BER of 1E-9 4 Measured at 133MHz using CSI_133_MHZ_6_4BG_12UI template in Intel supplied Clock Jitter Tool ...

Page 8

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM 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 Differential Routing L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max ...

Page 9

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM 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 = R1 R2a = R2b = R2 Figure 3 L1 L1' HCSL Output Buffer Cable Connected AC Coupled Application (figure 4) Component R5a, R5b ...

Page 10

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM General SMBus serial interface information for the 9DB1200C How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address DC • ICS clock will acknowledge • Controller (host) sends the begining byte location = N • ...

Page 11

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM SMBus Table: Frequency Select Register Byte 0 Pin # Name Bit 7 - HIGH_BW# Bit 6 - BYPASS#/PLL Bit 5 - Reserved Bit 4 - Reserved Bit 3 - Reserved Bit 2 - FS2 Bit 1 - FS1 Bit 0 - FS0 SMBus Table: Output Control Register ...

Page 12

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM SMBus Table: Output Enable Readback Byte 4 Pin # Name - Reserved Bit 7 Bit 6 - Reserved Bit 5 - Reserved Bit 4 - Reserved Bit 3 58,59 OE11# Bit 2 53,54 OE10# Bit 1 50,51 OE9# Bit 0 45,46 OE8# Note: For an output to be enabled, BOTH the Output Enable Bit and the OE# pin must be enabled. ...

Page 13

... Ordering Information Part / Order Number Shipping Packaging 9DB1200CGLF 9DB1200CGLFT Tape and Reel “LF” after the package code denotes the Pb-Free configuration, RoHS compliant. Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM ® IDT c SYMBOL L VARIATIONS ...

Page 14

... Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM Revision History Rev. Issue Date Description 1. Updated SMBus Serial Interface Information. A 12/18/2007 2. Release to Final. B 4/7/2008 Added Input Clock Parameters 1. Updated Phase Jitter Numbers 2. Added PLL BW and jitter peaking specs 3. Added input to output delay specs ...

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