Approved Product
C9827H
High Performance Pentium® 4 Clock Synthesizer
Product Features
•
•
•
Supports Pentium 4 Type CPUs
3.3 Volt Power Supply
10 Copies of PCI Clocks
®
•
•
•
•
•
•
3 Differential CPU Clocks
SMBus Support with Read-back Capabilities
Spread Spectrum EMI Reduction
Dial-a-Frequency™ Features
Dial-a-dB™ Features
56 Pin SSOP and TSSOP Package
Frequency Table
S2
1
1
1
1
0
0
0
0
M
M
M
M
S1
0
0
1
1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
0
1
0
1
CPU
(0:2)
66M
100M
200M
133M
66M
100M
200M
133M
Hi-Z
TCLK/2
150M
166.6M
3V66
66M
66M
66M
66M
66M
66M
66M
66M
Hi-Z
TCLK/4
50M
55.5M
66BUFF(0:2)/
3V66(0:4)
66IN
66IN
66IN
66IN
66M
66M
66M
66M
Hi-Z
TCLK/4
50M
55.5M
66IN/
3V66-5
66MHz clock input
66MHz clock input
66MHz clock input
66MHZ clock input
66M
66M
66M
66M
Hi-Z
TCLK/4
50M
55.5M
PCI_F
PCI
66IN/2
66IN/2
66IN/2
66IN/2
33 M
33 M
33 M
33 M
Hi-Z
TCLK/8
25M
27.7M
REF
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
Hi-Z
TCLK
14.318M
14.318M
USB/
DOT
48M
48M
48M
48M
48M
48M
48M
48M
Hi-Z
TCLK/2
48M
48M
Note:
TCLK is a test clock over driven on the XTAL_IN input during test mode. M= driven to a level between 1.0 and 1.8 Volts
If the S2 pin is at a M level during power up, a 0 state will be latched into the devices internal state register.
Block Diagram
XIN
XOUT
PLL1
CPU_STP#
IREF
VSSIREF
S(0:2)
MULT0
VTT_PG#
PCI_STP#
PLL2
PD#
WD
Logic
SDATA
SCLK
VDDA
I2C
Logic
66B[0:2]/3V66[2:4]
Power
Up Logic
66IN/3V66-5
/2
Pin Configuration
REF
VDD
XIN
XOUT
VSS
PCIF0
PCIF1
PCIF2
VDD
VSS
PCI0
PCI1
PCI2
PCI3
VDD
VSS
PCI4
PCI5
PCI6
VDD
VSS
66B0/3V66_2
66B1/3V66_3
66B2/3V66_4
66IN/3V66_5
PD#
VDDA
VSSA
VTT_PG#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
REF
S1
S0
CPU_STP#
CPU0
CPU/0
VDD
CPU1
CPU/1
VSS
VDD
CPU2
CPU/2
MULT0
IREF
VSSIREF
S2
48MUSB
48MDOT
VDD
VSS
3V66_1/VCH
PCI_STP#
3V66_0
VDD
VSS
SCLK
SDATA
CPU(0:2)
CPU/(0:2)
3V66_0
3V66_1/VCH
PCI(0:6)
PCI_F(0:2)
48M USB
48M DOT
C9827
Cypress Semiconductor Corporation
http://www.cypress.com
Document#: 38-07106 Rev. *A
12/26/2002
Page 1 of 25
CYPRESS [ CYPRESS SEMICONDUCTOR ]
