參數(shù)資料
型號(hào)： ICS8432BY-21T
元件分類： 時(shí)鐘產(chǎn)生/分配
英文描述： 500 MHz, OTHER CLOCK GENERATOR, PQFP32
封裝： 7 X 7 MM, 1.40 MM HEIGHT, 0.80 MM PITCH, MS-026, LQFP-32
文件頁數(shù)： 1/10頁
文件大?。?/td> 111K
代理商： ICS8432BY-21T
8432-21
www.icst.com/products/hiperclocks.html
APRIL 2, 2001
1
ADVANCE INFORMATION
Integrated
Circuit
Systems, Inc.
ICS8432-21
700/87.5MHZ, LOW PHASE NOISE
LVPECL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS8432-21 is a general purpose, dual out-
put high frequency synthesizer and a member of
the HiPerClockS family of High Performance
Clocks Solutions from ICS. The VCO operates at
a frequency range of 250MHz to 700MHz. Out-
put frequencies up to 700MHz for FOUT and 175MHz for
FOUT/P can be programmed using the serial or parallel inter-
faces to the confiquration logic. The low phase noise and dual
output frequency range of the ICS8432-21 makes it an ideal
clock generator for Infiniband applications.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
Fully integrated PLL
FOUT and FOUT/P differential 3.3V LVPECL outputs
FOUT frequency up to 700MHz
FOUT/P frequency up to 175MHz
Low phase noise
Parallel interface for programming counter and VCO
frequency multiplier and dividers during power-up
Serial 3 wire interface
Selectable crystal oscillator interface and LVCMOS refer-
ence input
LVCMOS control inputs
3.3V supply voltage
32 lead low-profile QFP (LQFP), 7mm x 7mm x 1.4mm
package body, 0.8mm package lead pitch
0°C to 70°C ambient operating temperature
The Advance Information presented herein represents a product currently in design or being considered for design. The noted characteristics are
design targets. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
XTAL1
REF_IN
XTAL_SEL
VDDA
S_LOAD
S_DATA
S_CLOCK
MR
M5
M6
M7
M8
N0
N1
P0
VEE
nFOUT
FOUT
VDDO
nFOUT/P
FOUT/P
VDD
TEST
XT
AL2
nP_LOAD
VCO_SEL
M0
M1
M2
M3
M4
32-Lead LQFP
Y Package
Top View
OSC
VCO_SEL
XTAL_SEL
REF_IN
XTAL1
XTAL2
MR
S_LOAD
S_DATA
S_CLOCK
nP_LOAD
M0:M8
N0:N1
P0
VCO
PLL
FOUT
nFOUT
FOUT/P
nFOUT/P
TEST
÷ M
0
1
0
1
PHASE DETECTOR
ICS8432-21
HiPerClockS
,&6
÷N
÷P
CONFIGURATION
INTERFACE
LOGIC
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