ICS9FG1200DF-1LFT IDT, Integrated Device Technology Inc, ICS9FG1200DF-1LFT Datasheet

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ICS9FG1200DF-1LFT

Manufacturer Part Number
ICS9FG1200DF-1LFT
Description
IC FREQUENCY GENERATOR 56-SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Frequency Generatorr
Datasheet

Specifications of ICS9FG1200DF-1LFT

Input
Clock
Output
Differential
Frequency - Max
400MHz
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-SSOP
Frequency-max
400MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
9FG1200DF-1LFT
Frequency Gearing Clock for CPU, PCIe Gen1, Gen2
& FBD
Description
ICS9FG1200D-1 follows the Intel DB1200GS Differential Buffer
Specification. This buffer provides 12 output clocks for CPU Host
Bus, PCIe Gen2, or Fully Buffered DIMM applications. The outputs
are configured with two groups. Both groups (DIF 9:0) and (DIF
11:10) can be equal to or have a gear ratio to the input clock. A
differential CPU clock from a CK410B+ main clock generator,
such as the ICS932S421, drives the ICS9FG1200D-1. The
ICS9FG1200D-1 can provide outputs up to 400MHz.
Key Specifications
Functional Block Diagram
IDT
®
DIF output cycle-to-cycle jitter < 50ps
DIF output-to-output skew < 100ps across all outputs in 1:1
mode
56-pin SSOP/TSSOP package
RoHS compliant packaging
Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD
CLK_IN
CLK_IN#
HIGH_BW#
FS_A_410
VTT_PWRGD#/PD
SMB_A0
SMB_A1
SMB_A2_PLLBYP#
SMBDAT
SMBCLK
OE#
OE(9:0)#
10
CONTROL
LOGIC
GEARING PLL
COMPATIBLE
COMPATIBLE
SPREAD
SPREAD
1:1 PLL
1
Features/Benefits
Drives 2 channels of 4 FBDIMMs (total of 8 FBDIMMs)
Power up default is all outputs in 1:1 mode
DIF_(9:0) can be “gear-shifted” from the input CPU Host
Clock
DIF_(11:10) can be “gear-shifted” from the input CPU
Host Clock
Spread spectrum compatible
Supports output clock frequencies up to 400 MHz
8 Selectable SMBus addresses
SMBus address determines PLL or Bypass mode
LOGIC
LOGIC
STOP
STOP
10
2
IREF
DIF(11:10)
ICS9FG1200D-1
DIF(9:0)
DATASHEET
1138C 02/08/10

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ICS9FG1200DF-1LFT Summary of contents

Page 1

Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Description ICS9FG1200D-1 follows the Intel DB1200GS Differential Buffer Specification. This buffer provides 12 output clocks for CPU Host Bus, PCIe Gen2, or Fully Buffered DIMM applications. The outputs are configured ...

Page 2

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Pin Configuration Power Groups Pin Number VDD GND 56 55 11,22,38,50 12,23,37,49 Functionality at Power Up (PLL Mode) CLK_IN (CPU FSB) 1 FS_A_410 MHz 1 100 <= CLK_IN < ...

Page 3

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Pin Description PIN # PIN NAME 1 HIGH_BW# 2 CLK_IN 3 CLK_IN# 4 SMB_A0 5 OE0# 6 DIF_0 7 DIF_0# 8 OE1# 9 DIF_1 10 DIF_1# 11 VDD 12 ...

Page 4

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Pin Description (continued) PIN # PIN NAME 29 SMBCLK 30 SMB_A2_PLLBYP# 31 OE6# 32 DIF_6# 33 DIF_6 34 OE7# 35 DIF_7# 36 DIF_7 37 GND 38 VDD 39 DIF_8# ...

Page 5

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD 9FG1200-1 Programmable Gear Ratios CLK_IN Geared DIF (CPU FSB) Outputs MHz MHz M 100.00 133.33 3 100.00 166.67 3 100.00 200.00 1 100.00 266.67 3 100.00 333.33 3 100.00 ...

Page 6

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD 9FG1200-1 1:1 PLL Programming Byte 8, Byte 8, Byte 8, bit 2 bit 1 bit 0 FSC FSB FS_A_410 ...

Page 7

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Absolute Maximum Ratings PARAMETER SYMBOL 3.3V Core Supply Voltage VDD_A 3.3V Logic Supply Voltage VDD_In Storage Temperature Ambient Operating Temp Tambient Case Temperature Tcase Input ESD protection ESD prot ...

Page 8

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Electrical Characteristics - DIF 0.7V Current Mode Differential Pair 70° 3.3 V +/-5 PARAMETER SYMBOL Current Source Output Impedance ...

Page 9

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Electrical Characteristics - Skew and Differential Jitter Parameters 70°C; Supply Voltage V = 3.3 V +/- Group Parameter t CLK_IN, DIF[x:0] SPO_PLL t ...

Page 10

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Electrical Characteristics - Phase Jitter PARAMETER SYMBOL t jphPCIe1 t jphPCIe2Lo Jitter, Phase t jphPCIe2Hi t jphFBD1_3.2G t jphFBD1_4.8G Notes on Phase Jitter: 1 See http://www.pcisig.com for complete specs. ...

Page 11

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD ® IDT 9FG1200 SMBus Address Mapping when using CK410B+ and DB400/800 SMB_A(2:0) = 000 SMB Adr: D0 9FG1200 (DB1200G) ...

Page 12

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD General SMBus serial interface information for the 9FG1200D-1 How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D0 • ICS clock ...

Page 13

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD SMBusTable: Gear Ratio Select Register Byte 0 Pin # Name DIF(9:0) Group of 10 gear ratio enable Bit 7 DIF(11:10) Group of 2 gear ratio enable Bit 6 - ...

Page 14

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD SMBusTable: Output Enable Readback Register Byte 4 Pin # Name 46 Bit 7 Bit 6 1 Bit 5 30 Readback - SMB_A2_PLLBYP# In Bit 4 Bit 3 Bit 2 ...

Page 15

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD SMBusTable: 1:1 PLL Frequency Selection Byte 8 Pin # Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 - Bit 2 - Bit 1 - Bit 0 ...

Page 16

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD SMBus Table: Gear PLL Frequency Control Register Byte 12 Pin # Name Bit 7 - Gear PLL N Div7 Bit 6 - Gear PLL N Div6 Bit 5 - ...

Page 17

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD SMBusTable: Reserved Register Byte 16 Pin # Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBus Table: 1:1 PLL Frequency ...

Page 18

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD SMBusTable: Reserved Register Byte 20 Pin # Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBusTable: Test Byte Register Byte ...

Page 19

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Common Recommendations for Differential Routing L1 length, Route as non-coupled 50 ohm trace. L2 length, Route as non-coupled 50 ohm trace. L3 length, Route as non-coupled 50 ohm trace. ...

Page 20

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Alternative termination for LVDS and other common differential signals. Vdiff Vp-p Vcm 0.45 v 0.22v 1.08 0.58 0.6 0.28 0.80 0.40 0.6 0.60 0.3 1.2 R1a = R1b = ...

Page 21

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD INDEX INDEX AREA AREA 45° SEATING SEATING b PLANE PLANE .10 (.004) C .10 (.004) C Frequency Gearing ...

Page 22

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD INDEX INDEX AREA AREA aaa Ordering Information Part / Order Number Shipping Packaging 9FG1200DF-1LF 9FG1200DF-1LFT Tape ...

Page 23

ICS9FG1200D-1 Frequency Gearing Clock for CPU, PCIe Gen1, Gen2 & FBD Revision History A 12/11/2007 Final Release. B 1/21/2009 Update Skew and Phase Jitter tables. C 2/8/2010 Updated part ordering information Innovate with IDT and accelerate your future networks. Contact: ...

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