C9827J
High Performance Pentium® 4 Clock Synthesizer
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3 differential CPU clocks
Product Features
SMBus Support with read back capabilities
Spread Spectrum EMI Reduction
Dial-a-Frequency™ features
Dial-a-dB™ features
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Supports Pentium® 4 type CPUs
3.3 Volt Power supply
10 copies of PCI clocks
56 Pin SSOP and TSSOP package
Frequency Table
S2
S1 S0 CPU
(0:2)
3V66
66BUFF(0:2)/
3V66(0:4)
66IN
66IN/
3V66-5
66MHz clock input
66MHz clock input
66MHz clock input
66MHZ clock input
PCI_F
PCI
REF
USB/
DOT
48M
48M
48M
48M
48M
48M
48M
48M
Hi-Z
1
1
1
1
0
0
0
0
M
M
M
M
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
66M
100M
200M
133M
66M
100M
200M
133M
Hi-Z
66M
66M
66M
66M
66M
66M
66M
66M
Hi-Z
66IN/2
66IN/2
66IN/2
66IN/2
33 M
33 M
33 M
33 M
Hi-Z
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
Hi-Z
66IN
66IN
66IN
66M
66M
66M
66M
Hi-Z
66M
66M
66M
66M
Hi-Z
TCLK/4
50M
55.5M
TCLK/2
150M
166.6M
TCLK/4
50M
55.5M
TCLK/4
50M
55.5M
TCLK/8
25M
27.7M
TCLK
14.318M
14.318M
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 an M level during power up, a 0 state will be latched into the devices internal state register.
Block Diagram
Pin Configuration
XIN
XOUT
REF
VDD
XIN
XOUT
VSS
PCIF0
PCIF1
PCIF2
VDD
VSS
PCI0
PCI1
PCI2
PCI3
VDD
VSS
PCI4
PCI5
PCI6
VDD
VSS
1
2
3
4
5
6
7
8
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
CPU(0:2)
CPU/(0:2)
PLL1
CPU_STP#
IREF
VSSIREF
9
3V66_0
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
S(0:2)
3V66_1/VCH
MULT0
VTT_PG#
PCI_STP#
/2
PCI(0:6)
PCI_F(0:2)
48M USB
48M DOT
PLL2
PD#
66B0/3V66_2
66B1/3V66_3
66B2/3V66_4
66IN/3V66_5
PD#
VSS
WD
Logic
3V66_1/VCH
PCI_STP#
3V66_0
VDD
VSS
SCLK
I2C
Logic
SDATA
SCLK
VDDA
VSSA
VTT_PG#
66B[0:2]/3V66[2:4]
66IN/3V66-5
Power
Up Logic
VDDA
SDATA
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07107 Rev. **
5/24/2001
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