ICS932S421CFLF IDT, Integrated Device Technology Inc, ICS932S421CFLF Datasheet

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ICS932S421CFLF

Manufacturer Part Number
ICS932S421CFLF
Description
IC PCIE GEN2 MAIN CLOCK 56-SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Generatorr
Datasheet

Specifications of ICS932S421CFLF

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
Output
-
Input
-
Other names
932S421CFLF
Recommended Application:
PCIe Gen 2 & QPI compliant CK410B+ clock for Intel-based
servers
Output Features:
Features/Benefits:
Pin Configuration
1460E—08/25/09
4 - 0.7V current-mode differential CPU pairs
5 - 0.7V current-mode differential SRC pair
4 - PCI (33MHz)
3 - PCICLK_F, (33MHz) free-running
1 - 48MHz
2 - REF, 14.318MHz
Supports spread spectrum modulation, 0 to -0.5%
down spread
Uses external 14.318MHz crystal and external load
capacitors for low ppm synthesis error
CPU clocks independent of SRC/PCI clocks
D2/D3 SMBus address
Increased CPU amplitude at higher speeds compared
to 932S421B
Integrated
Circuit
Systems, Inc.
PCIe Gen 2 and QPI Clock for Intel-based Servers
PCICLK_F0 9
PCICLK_F1 10
PCICLK_F2 11
SRCCLKC0 17
SRCCLKC1 18
SRCCLKC2 22
SRCCLKC3 23
SRCCLKC4 27
SRCCLKT0 16
SRCCLKT1 19
SRCCLKT2 21
SRCCLKT3 24
SRCCLKT4 26
GNDSRC 20
PCICLK0 3
PCICLK1 4
PCICLK2 5
PCICLK3 6
VDDSRC 15
VDDSRC 25
VDDSRC 28
56-pin SSOP & TSSOP
GNDPCI 2
GNDPCI 7
VDDPCI 1
VDDPCI 8
GND48 14
VDD48 12
48MHz 13
Key Specifications:
Functionality
FS_C
1. FS_B and FS_C are three-level inputs. Please see V
the Input/Supply/Common Output Parameters Table for correct values.
Also refer to the Test Clarification Table.
2. FS_A is a low-threshold input. Please see the V
specifications in the Input/Supply/Common Output Parameters Table for correct values.
0
0
0
0
1
1
1
1
PCIe Gen 2 compliant SRC outputs
QPI & FBD 2 compliant CPU clocks
CPU cycle-cycle jitter: < 50ps
SRC cycle-cycle jitter: < 125ps
PCI cycle-cycle jitter: < 500ps
CPU output skew: < 50ps
SRC output skew: < 250ps
± 100ppm frequency accuracy on all outputs
1
56 FS_C/TEST_SEL
55 REF0
54 REF1
53 VDDREF
52 X1
51 X2
50 GNDREF
49 FS_B/TEST_MODE
48 FS_A
47 VDDCPU
46 CPUCLKT0
45 CPUCLKC0
44 VDDCPU
43 CPUCLKT1
42 CPUCLKC1
41 GNDCPU
40 CPUCLKT2
39 CPUCLKC2
38 VDDCPU
37 CPUCLKT3
36 CPUCLKC3
35 VDDA
34 GNDA
33 IREF
32 NC
31 Vtt_PwrGd#/PD
30 SDATA
29 SCLK
FS_B
0
0
1
1
0
0
1
1
1
FS_A
0
1
0
1
0
1
0
1
2
Reserved
266.67
133.33
200.00
166.67
333.33
100.00
400.00
CPU
MHz
100.00
SRC
MHz
IL_FS
and V
IL_FS
ICS932S421C
33.33
MHz
PCI
and V
IH_FS
IH_FS
14.32
MHz
REF
specifications in
48.00
MHz
U
SB

Related parts for ICS932S421CFLF

ICS932S421CFLF Summary of contents

Page 1

Integrated Circuit Systems, Inc. PCIe Gen 2 and QPI Clock for Intel-based Servers Recommended Application: PCIe Gen 2 & QPI compliant CK410B+ clock for Intel-based servers Output Features: • 0.7V current-mode differential CPU pairs • 0.7V ...

Page 2

Integrated Circuit Systems, Inc. Pin Description Pin # PIN NAME 1 VDDPCI 2 GNDPCI 3 PCICLK0 4 PCICLK1 5 PCICLK2 6 PCICLK3 7 GNDPCI 8 VDDPCI 9 PCICLK_F0 10 PCICLK_F1 11 PCICLK_F2 12 VDD48 13 48MHz 14 GND48 15 VDDSRC ...

Page 3

Integrated Circuit Systems, Inc. Pin Description (Continued) Pin # PIN NAME 29 SCLK 30 SDATA 31 Vtt_PwrGd#/ IREF 34 GNDA 35 VDDA 36 CPUCLKC3 37 CPUCLKT3 38 VDDCPU 39 CPUCLKC2 40 CPUCLKT2 41 GNDCPU 42 CPUCLKC1 43 ...

Page 4

Integrated Circuit Systems, Inc. General Description The ICS932S421C is a main clock synthesizer for CK410B+ generation Intel server platforms. The ICS932S421C is driven with a 14.318MHz crystal. It generates CPU outputs up to 400MHz and PCI-Express clocks at 100 or ...

Page 5

Integrated Circuit Systems, Inc. Single-ended Output Terminations ICS932S421C SEPP Output Buffer (Single Ended Push Pull) SEPP Output Buffer (Single Ended Push Pull) The singled-ended outputs of the ICS 932S421C default to a drive strength of 2 loads. The REF clocks ...

Page 6

Integrated Circuit Systems, Inc. Absolute Maximum Rating PARAMETER SYMBOL 3.3V Core Supply Voltage VDD_A 3.3V Logic Input Supply VDD_In Voltage Storage Temperature Ts Ambient Operating Temp Tambient Case Temperature Tcase Input ESD protection HBM ESD prot 1 Guaranteed by design ...

Page 7

Integrated Circuit Systems, Inc. Electrical Characteristics - CPU 0.7V Current Mode Differential Pair PARAMETER SYMBOL Current Source Output Zo Impedance Voltage High VHigh Voltage Low VLow Max Voltage Vovs Min Voltage Vuds Crossing Voltage (abs) Vx(abs) Crossing Voltage (var) d-Vx ...

Page 8

Integrated Circuit Systems, Inc. Electrical Characteristics - PCICLK/PCICLK_F PARAMETER SYMBOL Long Accuracy ppm Clock period T period Absolute Clock period T pabs Clock period w/spread T periodSS Absolute Clock period T pabsSS w/spread Clock High Time T HIGH Clock Low ...

Page 9

Integrated Circuit Systems, Inc. Electrical Characteristics - USB48MHz PARAMETER SYMBOL Long Accuracy ppm Clock period T period Absolute Clock period T pabs Output Impedance R DSP Output High Voltage V OH Clock High Time T HIGH Clock Low Time T ...

Page 10

Integrated Circuit Systems, Inc. Electrical Characteristics - REF PARAMETER SYMBOL Long Accuracy ppm Clock period T period Absolute Clock period T pabs Clock High Time T HIGH Clock Low Time T LOW Output High Voltage V OH Output Low Voltage ...

Page 11

Integrated Circuit Systems, Inc. Differential Clock AC Tolerances CPU PPM tolerance 100 Cycle to Cycle Jitter 50 Spread -0.50% Clock Periods - Differential Outputs with Spread Spectrum Disabled 1 Clock Center SSC ON Freq. -c2c jitter Short-Term MHz AbsPer Min ...

Page 12

Integrated Circuit Systems, Inc. General SMBus serial interface information for the ICS932S421C How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D2 • ICS clock will acknowledge • Controller (host) sends the ...

Page 13

Integrated Circuit Systems, Inc. SMBus Table: Output Enable Register Byte 0 Pin # NA SRCCLK7 Enable Bit 7 NA SRCCLK6 Enable Bit 6 NA SRCCLK5 Enable Bit 5 26,27 SRCCLK4 Enable Bit 4 23,24 SRCCLK3 Enable Bit 3 21,22 SRCCLK2 ...

Page 14

Integrated Circuit Systems, Inc. SMBus Table: Stop and Power Down Mode Drive Control Register Byte 4 Pin # CPUCLK3 PD Drive Bit 7 36,37 CPUCLK2 PD Drive Bit 6 39,40 CPUCLK1 PD Drive Bit 5 42,43 45,46 CPUCLK0 PD Drive ...

Page 15

Integrated Circuit Systems, Inc. SMBus Table: Byte Count Register Byte 8 Pin # - Bit 7 - Bit 6 - Bit 5 - Bit 4 - Bit 3 - Bit 2 - Bit 1 - Bit 0 SMBus Table: Device ...

Page 16

Integrated Circuit Systems, Inc. SMBus Table: CPU Frequency Control Register Byte 11 Pin # - CPU N Div8 Bit 7 - CPU N Div9 Bit 6 - CPU M Div5 Bit 5 - CPU M Div4 Bit 4 - CPU ...

Page 17

Integrated Circuit Systems, Inc. SMBus Table: SRC/PCI Frequency Control Register Byte 15 Pin # - SRC N Div8 Bit 7 - SRC N Div9 Bit 6 - SRC M Div5 Bit 5 - SRC M Div4 Bit 4 - SRC ...

Page 18

Integrated Circuit Systems, Inc. SMBus Table: CPU Programmable Output Divider Register Byte 19 Pin # - CPUDiv3 Bit 7 - CPUDiv2 Bit 6 - CPUDiv1 Bit 5 - CPUDiv0 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBus ...

Page 19

Integrated Circuit Systems, Inc. PD, Power Down asynchronous active high input used to shut off all clocks cleanly prior to system power down. When PD is asserted, all clocks will be driven low before turning off the ...

Page 20

Integrated Circuit Systems, Inc. PD De-assertion The time from the de-assertion until power supply ramps to get stable clocks will be less than 1.8ms. If the drive mode control bit for PD tristate is programmed to '1' ...

Page 21

Integrated Circuit Systems, Inc INDEX INDEX AREA AREA 45° 45° 1460E—08/25/09 c SYMBOL ...

Page 22

Integrated Circuit Systems, Inc INDEX INDEX AREA AREA Ordering Information Part / Order Number Shipping Packaging 932S421CFLF 932S421CFLFT Tape and Reel 932S421CGLF 932S421CGLFT Tape and Reel “LF” ...

Page 23

Integrated Circuit Systems, Inc. Revision History Rev. Issue Date Description A 4/15/2008 Initial Release B 9/17/2008 Updated electrical characteristics, PPM and clock period data C 11/20/2008 Added 48MHz electrical char table. Corrected Byte 10 bits 4 and 5 to reserved. ...

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