ICS9EPRS475CGLFT IDT, Integrated Device Technology Inc, ICS9EPRS475CGLFT Datasheet

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ICS9EPRS475CGLFT

Manufacturer Part Number
ICS9EPRS475CGLFT
Description
IC EMBEDDED PC MAIN CLK 56TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet

Specifications of ICS9EPRS475CGLFT

Input
*
Output
*
Frequency - Max
*
Voltage - Supply
*
Operating Temperature
*
Mounting Type
Surface Mount
Package / Case
56-TSSOP
Frequency-max
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
System Clock for Embedded AMD
Recommended Application:
AMD M690T/780E systems
IDT
®
2 - Greyhound compatible K8 CPU pair
4 - low-power differential SRC pairs
2 - low-power differential SouthBridge SRC pairs
3 - low-power differential ATIG pairs
1 - Selectable 100MHz low-power differential/ 66 MHz
single-ended HTT clock
2 - 48MHz USB clock
3 - 14.318MHz Reference clock
System Clock for Embedded AMD
TM
SB_SRC1C_LPRS 18
SB_SRC0C_LPRS 22
SB_SRC1T_LPRS 19
SB_SRC0T_LPRS 23
based Systems
ATIG2C_LPRS 25
ATIG2T_LPRS 26
SRC3C_LPRS 6
SRC2C_LPRS 8
SRC1C_LPRS 12
SRC0C_LPRS 16
SRC3T_LPRS 7
SRC2T_LPRS 9
SRC1T_LPRS 13
SRC0T_LPRS 17
GNDSB_SRC 20
VDDSB_SRC 21
GNDATIG 24
GNDATIG 27
VDDATIG 28
48MHz_1 1
48MHz_0 2
SMBDAT 5
GNDSRC 10
GNDSRC 15
SMBCLK 4
VDDSRC 11
VDDSRC 14
GND48 3
56-Pin TSSOP
TM
1
based Systems
CPU outputs cycle-to-cycle jitter < 150ps
SRC outputs cycle-to-cycle jitter < 125ps
ATIG outputs cycle-to-cycle jitter < 125ps
+/- 300ppm frequency accuracy on CPU, SRC & ATIG
clocks
Spread Spectrum for EMI reduction
Outputs may be disabled via SMBus
External crystal load capacitors for maximum
frequency accuracy
PCI Express Generation 2.0 compliant
56 VDD48
55 X2
54 X1
53 GNDREF
52 VDDREF
51 REF0/SEL_HTT66
50 REF1
49 REF2
48 VDDHTT
47 HTT0T_LPRS/66M
46 HTT0C_LPRS/66M
45 GNDHTT
44 RESTORE#
43 PD#
42 CPUKG0T_LPRS
41 CPUKG0C_LPRS
40 VDDCPU
39 GNDCPU
38 CPUKG1T_LPRS
37 CPUKG1C_LPRS
36 VDDA
35 GNDA
34 GND
33 VDD
32 ATIG0T_LPRS
31 ATIG0C_LPRS
30 ATIG1T_LPRS
29 ATIG1C_LPRS
9EPRS475
DATASHEET
1615B—04/26/10

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ICS9EPRS475CGLFT Summary of contents

Page 1

System Clock for Embedded AMD Recommended Application: AMD M690T/780E systems • Greyhound compatible K8 CPU pair • low-power differential SRC pairs • low-power differential SouthBridge SRC pairs • low-power differential ATIG pairs ...

Page 2

System Clock for Embedded AMD Pin Description PIN # PIN NAME TYPE 1 48MHz_1 OUT 48MHz clock output. 2 48MHz_0 OUT 48MHz clock output. 3 GND48 GND Ground pin for the 48MHz outputs 4 SMBCLK IN Clock pin of ...

Page 3

System Clock for Embedded AMD Pin Description (Continued) PIN # PIN NAME TYPE Complementary clock of low-power differential push-pull ATIG pair with integrated series resistor. (no ATIG0C_LPRS OUT 31 50ohm shunt resistor to GND and no 33 ohm series ...

Page 4

System Clock for Embedded AMD General Description The ICS9EPRS475 is a main clock synthesizer chip that provides all clocks required for AMD embedded systems. An SMBus interface allows full control of the device. Block Diagram X1 OSC X2 PD# ...

Page 5

System Clock for Embedded AMD Table1: CPU and HTT Frequency Selection Table Byte 3 Bit5 Bit4 Bit3 Bit1 Bit0 CPU CPU CPU CPU CPU FS4 FS3 FS2 FS1 FS0 ...

Page 6

System Clock for Embedded AMD Table 2: SRC Frequency Selection Table Byte 4 Bit4 Bit3 Bit2 Bit1 FS4 FS3 FS2 FS1 ...

Page 7

System Clock for Embedded AMD General SMBus serial interface information for the ICS9EPRS475 How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D2 • ICS clock will acknowledge • Controller (host) ...

Page 8

System Clock for Embedded AMD SMBus Table: Latched Input Readback Output Enable Control Register Byte 0 Name Bit 7 SEL_HTT66 readback Bit 6 REF0_OE Bit 5 REF1_OE Bit 4 REF2_OE Bit 3 48MHz_1_OE Bit 2 48MHz_0_OE Bit 1 SS_Enable ...

Page 9

System Clock for Embedded AMD SMBus Table: Reserved Byte 5 Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBus Table: Reserved Byte 6 Name Bit 7 Bit 6 Bit 5 ...

Page 10

System Clock for Embedded AMD SMBus Table: Reserved Byte 10 Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBus Table: Byte Count Register Byte 11 Name Bit 7 Bit 6 ...

Page 11

System Clock for Embedded AMD SMBus Table:Test Mode Register Byte 15 Name Test_Md_Sel Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBus Table: CPU PLL Frequency Control Register Byte 16 Name ...

Page 12

System Clock for Embedded AMD SMBUS Table: SRC spread enable Byte 20 Name Bit 7 SRC_PLL_SS_Enable Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SMBUS Table: Reserved Byte 21 Name Bit 7 Bit ...

Page 13

System Clock for Embedded AMD SMBUS Table: SRC Frequency Control Register Byte 25 Name N Div2 Bit 7 N Div1 Bit 6 M Div5 Bit 5 M Div4 Bit 4 M Div3 Bit 3 M Div2 Bit 2 M ...

Page 14

System Clock for Embedded AMD SMBUS Table: SRC Output Divider Control Register Byte 30 Name SRC NDiv0 Bit 7 Bit 6 Bit 5 Bit 4 SRCDiv3 Bit 3 SRCDiv2 Bit 2 SRCDiv1 Bit 1 SRCDiv0 Bit 0 SMBUS Table: ...

Page 15

System Clock for Embedded AMD Absolute Maximum Rating PARAMETER SYMBOL 3.3V Core Supply Voltage VDDxxx Storage Temperature Ts Ambient Operating Temp Tambient Case Temperature Tcase Input ESD protection HBM ESD prot 1 Guaranteed by design and characterization, not 100% ...

Page 16

System Clock for Embedded AMD AC Electrical Characteristics - Low-Power DIF Outputs: CPUKG and HTT PARAMETER SYMBOL ΔV Crossing Point Variation CROSS Frequency f Long Term Accuracy ppm Rising Edge Slew Rate S RISE Falling Edge Slew Rate S ...

Page 17

System Clock for Embedded AMD AC Electrical Characteristics - Low-Power DIF Outputs: SRC, SB_SRC, ATIG PARAMETER SYMBOL Rising Edge Slew Rate t SLR Falling Edge Slew Rate t FLR Slew Rate Variation t SLVAR Maximum Output Voltage V HIGH ...

Page 18

System Clock for Embedded AMD Electrical Characteristics - USB - 48MHz PARAMETER SYMBOL Long Accuracy T Clock period Clock Low Time Clock High Time Output High Voltage Output Low Voltage Output High Current Output Low Current Edge Rate Edge ...

Page 19

System Clock for Embedded AMD N E1 INDEX INDEX AREA AREA Ordering Information Part/Order Number Shipping Packaging 9EPRS475CGLF 9EPRS475CGLFT Tape and Reel “LF” suffix to the part number are the Pb-Free ...

Page 20

System Clock for Embedded AMD Revision History Rev. Issue Date Description 0.1 7/31/2009 Initial Release A 8/19/2009 RW Released to final. 1. Update part ordering information from "B" to "C" B 4/26/2010 RW 2. Updated document template. TM based ...

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