参数资料
型号: ICS87604AGILFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 1/13页
文件大小: 0K
描述: IC CLK GEN PCI/PCI-X 28-TSSOP
标准包装: 1,000
系列: HiPerClockS™
类型: 时钟/频率发生器,零延迟缓冲器,多路复用器
PLL:
主要目的: PCI Express(PCIe)
输入: LVCMOS,LVTTL,晶体
输出: LVCMOS,LVTTL
电路数: 1
比率 - 输入:输出: 2:5
差分 - 输入:输出: 无/无
频率 - 最大: 167.67MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.240",6.10mm 宽)
供应商设备封装: 28-TSSOP
包装: 带卷 (TR)
其它名称: 87604AGILFT
Low Voltage/Low Skew, 1:4 PCI/PCI-X
Zero Delay Clock Generator
87604I
ICS87601AGI REVISION B APRIL 1, 2010
1
2010 Integrated Device Technology, Inc.
GENERAL DESCRIPTION
The ICS87604I is a 1:4 PCI/PCI-X Clock Generator.
The ICS87604I has a selectable REF_IN or crystal
input. The REF_IN input accepts LVCMOS or LVTTL
input levels. The ICS87604I has a fully integrated PLL
along with frequency configurable clock and feedback
outputs for multiply-ing and regenerating clocks with “zero delay”.
The PLL’s VCO has an operating range of 250MHz - 500MHz,
allowing this device to be used in a variety of general purpose
clocking applications. For PCI/PCI-X applications in particular,
the VCO frequency should be set to 400MHz. This can be
accomplished by supplying 33.33MHz, 25MHz, 20MHz, or
16.66MHz on the reference clock or crystal input and by selecting
÷12, ÷16, ÷20, or ÷24, respectively as the feedback divide value.
The divider on the output bank can then be configured to generate
33.33MHz (÷12), 66.66MHz (÷6), 100MHz (÷4), or 133.33MHz
(÷3).
The ICS87604I is characterized to operate with its core
supply at 3.3V and the bank supply at 3.3V or 2.5V. The
ICS87604I is packaged in a small 6.1mm x 9.7mm TSSOP
body, making it ideal for use in space-constrained applications.
FEATURES
Fully integrated PLL
Four LVCMOS/LVTTL outputs, 15Ω typical output impedance
Selectable crystal oscillator interface or
LVCMOS/LVTTL REF_IN clock input
Maximum output frequency: 166.67MHz
Maximum crystal input frequency: 38MHz
Maximum REF_IN input frequency: 41.67MHz
Individual banks with selectable output dividers for
generating 33.333MHz, 66.66MHz, 100MHz and
133.333MHz
Separate feedback control for generating PCI / PCI-X
frequencies from a 16.66MHz or 20MHz crystal, or 25MHz
or 33.33MHz reference frequency
VCO range: 250MHz to 500MHz
Cycle-to-cycle jitter: 120ps (maximum)
Period jitter, RMS: 20ps (maximum)
Output skew: 65ps (maximum)
Static phase offset: 160ps ± 160ps
Voltage Supply Modes:
V
DD
/V
DDA
/V
DDO
3.3/3.3/3.3
3.3/3.3/2.5
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5 and lead-free (RoHS 6)
packages
HiPerClockS
ICS
PIN ASSIGNMENT
ICS87604I
28-Lead TSSOP, 240MIL
6.1mm x 9.7mm x 0.92mm
body package
G Package
Top View
VDD
FB_IN
GND
FB_OUT
REF_OUT
VDDO
Q3
Q2
GND
Q1
Q0
VDDO
PLL_SEL
VDDA
FBDIV_SEL1
FBDIV_SEL0
DIV_SEL1
DIV_SEL0
nc
MR
nc
GND
nc
REF_IN
XTAL_OUT
XTAL_IN
XTAL_SEL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DIV_SEL0
DIV_SEL1
XTAL_SEL
REF_IN
FB_IN
PLL_SEL
FBDIV_SEL1
FBDIV_SEL0
MR
XTAL_IN
XTAL_OUT
Q0
Q1
Q2
Q3
0
1
PLL
OSC
0
1
REF_OUT
FB_OUT
÷12
÷16
÷20
÷24
÷3
÷4
÷6
÷12
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
BLOCK DIAGRAM
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