9FGV0841AKLF Datasheet 9FGV0841AKILF, 9FGV0841AKLF, 9FGV0841AKLFT | P10-P12

8-O/P 1.8V PCIE GEN 1-2-3 CLOCK GENERATOR W/ZO=100OHMS 10 OCTOBER 18, 2016

9FGV0841 DATASHEET

General SMBus Serial Interface Information

How to Write

• Controller (host) sends a start bit

• Controller (host) sends the write address

• IDT clock will acknowledge

• Controller (host) sends the beginning byte location = N

• IDT clock will acknowledge

• Controller (host) sends the byte count = X

• IDT clock will acknowledge

• Controller (host) starts sending Byte N through Byte

N+X-1

• IDT clock will acknowledge each byte one at a time

• Controller (host) sends a Stop bit

Note: SMBus address is latched on SADR pin.

How to Read

• Controller (host) will send a start bit

• Controller (host) sends the write address

• IDT clock will acknowledge

• Controller (host) sends the beginning byte location = N

• IDT clock will acknowledge

• Controller (host) will send a separate start bit

• Controller (host) sends the read address

• IDT clock will acknowledge

• IDT clock will send the data byte count = X

• IDT clock sends Byte N+X-1

• IDT clock sends Byte 0 through Byte X (if X

(H)

was

written to Byte 8)

• Controller (host) will need to acknowledge each byte

• Controller (host) will send a not acknowledge bit

• Controller (host) will send a stop bit

Index Block Write Operation

Controller (Host)

IDT (Slave/Receiver)

TstarT bit

Slave Address

WR WRite

ACK

Beginning Byte = N

ACK

Data Byte Count = X

ACK

Beginning Byte N

X Byte

ACK

Byte N + X - 1

ACK

PstoP bit

Index Block Read Operation

Controller (Host) IDT (Slave/Receiver)

TstarT bit

Slave Address

WR WRite

ACK

Beginning Byte = N

ACK

RT Repeat starT

Slave Address

RD ReaD

ACK

Data Byte Count=X

ACK

X Byte

Beginning Byte N

ACK

Byte N + X - 1

N Not acknowledge

PstoP bit

OCTOBER 18, 2016 11 8-O/P 1.8V PCIE GEN 1-2-3 CLOCK GENERATOR W/ZO=100OHMS

9FGV0841 DATASHEET

SMBus Table: Output Enable Register

Byte 0 Name Control Function Type 0 1 Default

Bit 7

DIF OE7 Output Enable RW Low/Low Enabled 1

Bit 6

DIF OE6 Output Enable RW Low/Low Enabled 1

Bit 5

DIF OE5 Output Enable RW Low/Low Enabled 1

Bit 4

DIF OE4 Output Enable RW Low/Low Enabled 1

Bit 3

DIF OE3 Output Enable RW Low/Low Enabled 1

Bit 2

DIF OE2 Output Enable RW Low/Low Enabled 1

Bit 1

DIF OE1 Output Enable RW Low/Low Enabled 1

Bit 0

DIF OE0 Output Enable RW Low/Low Enabled 1

1. A low on these bits will overide the OE# pin and force the differential output Low/Low

SMBus Table: SS Readback and Control Register

Byte 1 Name Control Function Type 0 1 Default

Bit 7

SSENRB1 SS Enable Readback Bit1

Latch

Bit 6

SSENRB1 SS Enable Readback Bit0

Latch

Bit 5

SSEN_SWCNTRL Enable SW control of SS RW

Values in B1[7:6]

control SS amount

Values in B1[4:3]

control SS amount.

Bit 4

SSENSW1 SS Enable Software Ctl Bit1

Bit 3

SSENSW0 SS Enable Software Ctl Bit0

Bit 2

Bit 1

AMPLITUDE 1 RW 00 = 0.6V 01 = 0.7V 1

Bit 0

AMPLITUDE 0 RW 10= 0.8V 11 = 0.9V 0

1. B1[5] must be set to a 1 for these bits to have any effect on the part.

SMBus Table: DIF Slew Rate Control Register

Byte 2 Name Control Function Type 0 1 Default

Bit 7

SLEWRATESEL DIF7 Adjust Slew Rate of DIF7 RW Slow Setting Fast Setting 1

Bit 6

SLEWRATESEL DIF6 Adjust Slew Rate of DIF6 RW Slow Setting Fast Setting 1

Bit 5

SLEWRATESEL DIF5 Adjust Slew Rate of DIF5 RW Slow Setting Fast Setting 1

Bit 4

SLEWRATESEL DIF4 Adjust Slew Rate of DIF4 RW Slow Setting Fast Setting 1

Bit 3

SLEWRATESEL DIF3 Adjust Slew Rate of DIF3 RW Slow Setting Fast Setting 1

Bit 2

SLEWRATESEL DIF2 Adjust Slew Rate of DIF2 RW Slow Setting Fast Setting 1

Bit 1

SLEWRATESEL DIF1 Adjust Slew Rate of DIF1 RW Slow Setting Fast Setting 1

Bit 0

SLEWRATESEL DIF0 Adjust Slew Rate of DIF0 RW Slow Setting Fast Setting 1

SMBus Table: Nominal Vhigh Amplitude Control/ REF Control Register

Byte 3 Name Control Function Type 0 1 Default

Bit 7

RW 00 = 0.9V/ns 01 =1.3V/ns 0

Bit 6

RW 10 = 1.6V/ns 11 = 1.8V/ns 1

Bit 5

REF Power Down Function Wake-on-Lan Enable for REF RW

REF does not run in

Power Down

REF runs in Power

Down

Bit 4

REF OE REF Output Enable RW Low Enabled 1

Bit 3

Bit 2

Bit 1

Bit 0

Byte 4 is Reserved

00' for SS_EN_tri = 0, '01' for SS_EN_tri

= 'M', '11 for SS_EN_tri = '1'

00' = SS Off, '01' = -0.25% SS,

'10' = Reserved, '11'= -0.5% SS

Reserved

Controls Output Amplitude

Reserved

REF Slew Rate Control

Reserved

8-O/P 1.8V PCIE GEN 1-2-3 CLOCK GENERATOR W/ZO=100OHMS 12 OCTOBER 18, 2016

9FGV0841 DATASHEET

Recommended Crystal Characteristics (3225 package)

SMBus Table: Revision and Vendor ID Register

Byte 5 Name Control Function Type 0 1 Default

Bit 7

RID3

Bit 6

RID2

Bit 5

RID1

Bit 4

RID0

Bit 3

VID3

Bit 2

VID2

Bit 1

VID1

Bit 0

VID0

SMBus Table: Device Type/Device ID

Byte 6 Name Control Function Type 0 1 Default

Bit 7

Device Type1

Bit 6

Device Type0

Bit 5

Device ID5

Bit 4

Device ID4

Bit 3

Device ID3

Bit 2

Device ID2

Bit 1

Device ID1

Bit 0

Device ID0

SMBus Table: Byte Count Register

Byte 7 Name Control Function Type 0 1 Default

Bit 7

Bit 6

Bit 5

Bit 4

BC4 RW 0

Bit 3

BC3 RW 1

Bit 2

BC2 RW 0

Bit 1

BC1 RW 0

Bit 0

BC0 RW 0

001000 binary or 08 hexDevice ID

Reserved

00 = FGx, 01 = DBx ZDB/FOB,

10 = DMx, 11= DBx FOB

Device Type

Reserved

A rev = 0000Revision ID

Writing to this register will configure how

many bytes will be read back, default is

= 8 bytes.

Byte Count Programming

Reserved

0001 = IDTVENDOR ID

PARAMETER VALUE UNITS NOTES

Frequency 25 MHz 1

Resonance Mode Fundamental

Frequency Tolerance @ 25°C

20 PPM Max 1

Frequency Stability, ref @ 25°C Over

Operating Temperature Range

20 PPM Max 1

Temperature Range (commerical) 0~70 °

Temperature Range (industrial) -40~85 °

Equivalent Series Resistance (ESR) 50

Ω

Max 1

Shunt Capacitance (C

)7pF Max1

Load Capacitance (C

)8pF Max1

Drive Level 0.3 mW Max 1

Aging per year

±5

PPM Max 1

Notes:

1. FOX 603-25-150.

2. For I-temp, FOX 603-25-261.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P17

9FGV0841AKLF

Mfr. #:

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Manufacturer:

IDT

Description:

Clock Generators & Support Products PCIe CLOCK GENERATOR GEN 1/2/3, 8 OUT

Lifecycle:

New from this manufacturer.

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9FGV0841AKLF

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