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CY28346 Datasheet(PDF) 1 Page - Cypress Semiconductor

Part No. CY28346
Description  Clock Synthesizer with Differential CPU Outputs
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY28346 Datasheet(HTML) 1 Page - Cypress Semiconductor

 
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Clock Synthesizer with Differential CPU Outputs
CY28346
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
Document #: 38-07331 Rev. *B
Revised December 26, 2002
Features
• Compliant with Intel® CK 408 Mobile Clock Synthesizer
specifications
• 3.3V power supply
• Three differential CPU clocks
• Ten copies of PCI clocks
• 5/6 copies of 3V66 clocks
• SMBus support with read-back capabilities
• Spread Spectrum electromagnetic interference (EMI)
reduction
• Dial-a-Frequency™ features
• Dial-a-dB™ features
• 56-pin TSSOP and SSOP packages
Table 1. Frequency Table[1]
S2
S1
S0
CPU (0:2)
3V66
66BUFF(0:2)/
3V66(0:4)
66IN/3V66–5
PCI_FPCI
REF
USB/ DOT
1
0
0
66M
66M
66IN
66-MHz clock input
66IN/2
14.318M
48M
1
0
1
100M
66M
66IN
66-MHz clock input
66IN/2
14.318M
48M
1
1
0
200M
66M
66IN
66-MHz clock input
66IN/2
14.318M
48M
1
1
1
133M
66M
66IN
66-MHZ clock input
66IN/2
14.318M
48M
0
0
0
66M
66M
66M
66M
33 M
14.318M
48M
0
0
1
100M
66M
66M
66M
33 M
14.318M
48M
0
1
0
200M
66M
66M
66M
33 M
14.318M
48M
0
1
1
133M
66M
66M
66M
33 M
14.318M
48M
M
0
0
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
M
0
1
TCLK/2
TCLK/4
TCLK/4
TCLK/4
TCLK/8
TCLK
TCLK/2
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 device’s internal state register.
PLL1
PLL2
/2
WD
Logic
Power
Up Logic
XIN
XOUT
CPU_STP#
IREF
VSSIREF
S(0:2)
MULT0
VTT_PG#
PCI_STP#
PD#
SDATA
SCLK
VDDA
66B[0:2]/3V66[2:4]
48M DOT
48M USB
PCI_F(0:2)
PCI(0:6)
3V66_1/VCH
3V66_0
CPUC(0:2)
CPUT(0:2)
REF
66IN/3V66-5
I2C
Logic
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#
REF
S1
S0
CPU_STP#
CPUT0
CPUC0
VDD
CPUT1
CPUC1
VSS
VDD
CPUT2
CPUC2
MULT0
IREF
VSSIREF
S2
48MUSB
48MDOT
VDD
VSS
3V66_1/VCH
PCI_STP#
3V66_0
VDD
VSS
SCLK
SDATA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
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20
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22
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24
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26
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28
56
55
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49
48
47
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45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
Pin Configuration
Block Diagram


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