ICS9214DGLF IDT, Integrated Device Technology Inc, ICS9214DGLF Datasheet

no-image

ICS9214DGLF

Manufacturer Part Number
ICS9214DGLF
Description
IC CLOCK GEN RAMBUS XDR 28-TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Direct RAMbus Clock Generatorr
Datasheet

Specifications of ICS9214DGLF

Input
Clock
Output
Clock
Frequency - Max
500MHz
Voltage - Supply
2.375 V ~ 2.625 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-TSSOP
Frequency-max
500MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
9214DGLF

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ICS9214DGLFT
Manufacturer:
NXP
Quantity:
15 000
Part Number:
ICS9214DGLFT
Manufacturer:
ICS
Quantity:
7 750
Part Number:
ICS9214DGLFT
Manufacturer:
ICS
Quantity:
20 000
General Description
The ICS9214 clock generator provides the necessary clock
signals to support the Rambus XDR
and Redwood logic interface. The clock source is a reference
clock that may or may not be modulated for spread spectrum.
The ICS9214 provides 4 differential clock pairs in a space
saving 28-pin TSSOP package and provides an off-the-shelf
high-performance interface solution.
Figure 1 shows the major components of the ICS9214 XDR
Clock Generator.
Multiplexer and four differential output buffers. The outputs
can be disabled by a logic low on the OE pin. An output is
enabled by the combination of the OE pin being high, and 1
in its SMBus Output control register bit.
The PLL receives a reference clock, CLK_INT/C and outputs
a clock signal at a frequency equal to the input frequency
times a multiplier. Table 2 shows the multipliers selectable
via the SMBus interface. This clock signal is then fed to the
differential output buffers to drive the enabled clocks. Disabled
outputs are set to Hi-Z. The Bypass mode routes the input
clock, CLK_INT/C, directly to the differential output buffers,
bypassing the PLL.
Up to four ICS9214 devices can be cascaded on the same
SMBus. Table 3 shows the SMBus addressing and control for
the four devices.
Block Diagram
BYPASS#/PLL
0809G–05/02/08
CLK_INT
CLK_INC
SMBCLK
Integrated
Circuit
Systems, Inc.
SMBDAT SMB_A0 SMB_A1
PLL
These include the a PLL, a Bypass
Bypass
MUX
OE
RegA
RegC
RegB
RegD
OE
OE
OE
OE
Rambus
TM
memory subsystem
TM
XDR
ODCLK_T0
ODCLK_C0
ODCLK_T1
ODCLK_C1
ODCLK_T2
ODCLK_C2
ODCLK_T3
ODCLK_C3
TM
Clock Generator
Features
BYPASS#/PLL 14
400 – 500 MHz clock source
4 open-drain differential output drives with short term
jitter < 40ps
Spread spectrum compatible
Reference clock is differential or single-ended, 100 or
133 MHz
SMBus programmability for:
- frequency multiplier
- output enable
- operating mode
Supports frequency multipliers of: 3, 4, 5, 6, 8,
15/2 and 15/4
Support systems where XDR subsystem is
asynchronous to other system clocks
2.5V power supply
SMBDAT 10
AVDD2.5
CLK_INC
SMBCLK
CLK_INT
SMB_A0 12
SMB_A1 13
VDD2.5
IREFY
AGND
AGND
GND
OE 11
Pin Configuration
28-Pin 4.4mm TSSOP
1
2
3
4
5
6
7
8
9
28 VDD2.5
27 ODCLK_T0
26 ODCLK_C0
25 GND
24 ODCLK_T1
23 ODCLK_C1
22 VDD2.5
21 GND
20 ODCLK_T2
19 ODCLK_C2
18 GND
17 ODCLK_T3
16 ODCLK_C3
15 VDD2.5
ICS9214
9/2,

Related parts for ICS9214DGLF

ICS9214DGLF Summary of contents

Page 1

Integrated Circuit Systems, Inc. Rambus General Description The ICS9214 clock generator provides the necessary clock signals to support the Rambus XDR and Redwood logic interface. The clock source is a reference clock that may or may not be modulated for ...

Page 2

Integrated Circuit Systems, Inc. Pin Descriptions PIN # PIN NAME PIN TYPE 1 AVDD2.5 PWR 2 AGND PWR 3 IREFY 4 AGND PWR 5 CLK_INT 6 CLK_INC 7 VDD2.5 PWR 8 GND PWR 9 SMBCLK 10 SMBDAT ...

Page 3

Integrated Circuit Systems, Inc. General SMBus serial interface information for the ICS9214 How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D8 • ICS clock will acknowledge • Controller (host) sends the ...

Page 4

Integrated Circuit Systems, Inc. SMB Table: Output Control Register Byte 0 Pin # - Test Mode Bit 7 - Bit 6 - Bit 5 - Bit 4 27,26 ODCLK_T/C0 Bit 3 24,23 ODCLK_T/C1 Bit 2 20,19 ODCLK_T/C2 Bit 1 17,16 ...

Page 5

Integrated Circuit Systems, Inc. PLL Multiplier Table 2 shows the frequency multipliers in the PLL, selectable by programming the MULT0, MULT1 and MULT2 bits in the SMBus Multiplier Control register. Power up default is 4. Table 2. PLL Multiplier Selection ...

Page 6

Integrated Circuit Systems, Inc. Operating Modes Table 4: Operating Modes Byte 0 Byte 1 BYPASS#/ OE PLL ...

Page 7

Integrated Circuit Systems, Inc. Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0 V Logic Inputs ...

Page 8

Integrated Circuit Systems, Inc. DC Characteristics - Outputs TA = 0°C to +85°C; Supply Voltage AVDD2.5, VDD2.5 = 2.5 V +/- 0.125V (unless otherwise stated) SYMBOL PARAMETER t Power up latency State transition latency CO Differential output ...

Page 9

Integrated Circuit Systems, Inc. AC Characteristics-Inputs T = 0°C to +85°C; Supply Voltage AVDD2.5, VDD2.5 = 2.5 V +/- 0.125V (unless otherwise stated) A PARAMETER CLK_INT/CLK_INC cycle 1 time Cycle-to-Cycle Jitter Input clock duty cycle CLK_INT/CLK_INC rise and fall time ...

Page 10

Integrated Circuit Systems, Inc. AC Characteristics-Outputs T = 0°C to +85°C; Supply Voltage AVDD2.5, VDD2.5 = 2.5 V +/- 0.125V (unless otherwise stated SYMBOL PARAMETER t Output clock cycle time Short term jitter (over clock ...

Page 11

Integrated Circuit Systems, Inc. Clock Output Drivers Figure 2 shows the clock driver equivalent circuit. The differential driver produces a specified voltage swing on the channel by switching the currents going into ODCLK_T and ODCLK_C. The external resistor R current. ...

Page 12

Integrated Circuit Systems, Inc. Input Clock Signal The ICS9214 receives either a differential or single-ended reference clock (CLK_INT/C). When the reference input clock is from a differential clock source, it must meet the voltage levels and timing requirements listed in ...

Page 13

Integrated Circuit Systems, Inc. Power Sequencing Supply voltages for the ICS9214 must be applied before the same time and external input and output signals. ODCLK_T ODCLK_C 0809G—08/02/08 t CYCLE CYCLE, Figure 5. Cycle-to-cycle Jitter ...

Page 14

Integrated Circuit Systems, Inc. Phase Noise The 9214 meets the single side band phase noise spectral purity for offset frequencies between 1 MHz and 100 MHz as described by the equation: 10log[1+(50 x 106/f)2.4] -138 dBc/Hz This equation is shown ...

Page 15

Integrated Circuit Systems, Inc. Ordering Information ICS9214yG LF-T Example: ICS XXXX y G LF- T 0809G—08/02/08 4.40 mm. Body, 0.65 mm. Pitch TSSOP SYMBOL COMMON DIMENSIONS α aaa VARIATIONS ...

Page 16

Integrated Circuit Systems, Inc. Revision History Rev. Issue Date Description Updated SMBus table Byte 2, Bit 3 from:0 to:1. Updated PLL Multiplier Selection Table, from: Byte 1 to: Byte 0, and Bit 2,1,0, 0.1 3/30/2005 to: Bit 6,5,4. Updated Ordering ...

Related keywords