PRELIMINARY
CY28346-2
Clock Synthesizer with Differential CPU Outputs
Features
• Compliant with Intel® CK 408 Mobile Clock Synthesizer
• Spread Spectrum electromagnetic interference (EMI)
reduction
specifications
• 3.3V power supply
• Dial-a-Frequency features
• 3 differential CPU clocks
• 10 copies of PCI clocks
• 5/6 copies of 3V66 clocks
• SMBus support with Read Back capabilities
• Dial-a-dB™ features
• Extended operating temperature range, 0°C to 85°C
• 56-pin TSSOP packages
Table 1. Frequency Table[1]
CPU
66BUFF(0:2)/
3V66(0:4)
66IN/
USB/
DOT
48M
48M
48M
48M
48M
48M
48M
S2
1
1
1
1
0
0
0
0
S1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
(0:2)
3V66
66M
66M
66M
66M
66M
66M
66M
66M
3V66-5
PCIF/PCI
66IN/2
66IN/2
66IN/2
66IN/2
33 M
33 M
33 M
33 M
Hi-Z
REF
66M
100M
200M
133M
66M
100M
200M
133M
Hi-Z
66IN
66IN
66IN
66IN
66M
66M
66M
66M
Hi-Z
66-MHz clock input
66-MHz clock input
66-MHz clock input
66-MHz clock input
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
14.318M
Hi-Z
66M
66M
66M
66M
Hi-Z
48M
Hi-Z
TCLK/2
M
M
0
0
0
1
Hi-Z
TCLK/4
TCLK/2
TCLK/4
TCLK/4
TCLK/8
TCLK
Block Diagram
Pin Configuration
1
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
VDD
XIN
XIN
REF
2
S1
S0
XOUT
3
XOUT
4
CPU_STP#
CPUT0
CPUC0
VDD
VSS
CPUT(0:2)
5
PLL1
PCIF0
CPUC(0:2)
6
PCIF1
7
PCIF2
CPU_STP#
8
CPUT1
CPUC1
VSS
VDD
IREF
9
VSS
VSSIREF
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PCI0
3V66_0
S(0:2)
VDD
PCI1
CPUT2
CPUC2
MULT0
IREF
PCI2
3V66_1/VCH
MULT0
PCI3
VDD
VTT_PWRGD#
PCI_STP#
/2
PCI(0:6)
VSS
VSSIREF
S2
PCI4
PCI_F(0:2)
48M_USB
48M_DOT
PCI5
48M_USB
48M_DOT
VDD
PLL2
PCI6
VDD
VSS
VSS
66B0/3V66_2
66B1/3V66_3
66B2/3V66_4
66IN/3V66_5
PD#
WD
PD#
3V66_1/VCH
PCI_STP#
3V66_0
VDD
Logic
I2C
SDATA
SCLK
Logic
VSS
66B[0:2]/3V66[2:4]
66IN/3V66-5
VDDA
SCLK
Power
Up Logic
VSSA
VDDA
SDATA
VTT_PWRGD#
Note:
1. TCLK is a test clock driven on the XTAL_IN input during test mode. M = driven to a level between 1.0V and 1.8V. If the S2 pin is at a M level during power-up, a
0 state will be latched into the devices internal state register.
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose, CA 95134
•
408-943-2600
Document #: 38-07509 Rev. *B
Revised March 11, 2005