CY28339
Intel£ CK408 Mobile Clock Synthesizer
Features
• Compliant with Intel® CK 408 rev 1.1 Mobile Clock
Synthesizer specifications
• One VCH clock
• One reference clock at 14.318 MHz
• SMBus support with read-back capabilities
• 3.3V power supply
• Two differential CPU clocks
• Ideal Lexmark profile Spread Spectrum electromag-
netic interference (EMI) reduction
• Nine copies of PCI clocks
• Three copies configurable PCI free-running clocks
• Two 48 MHz clocks (USB, DOT)
• Five/six copies of 3V66 clocks
• Dial-a-Frequency™ features
• Dial-a-dB™ features
• 48-pin TSSOP package
Table 1. Frequency Table[1]
66BUFF(0:2)/
3V66(0:4)
66IN
S2
1
S1 CPU (1:2)
3V66
66M
66IN/3V66–5
66-MHz clock input
66-MHZ clock input
66M
PCIF, PCI
66IN/2
66IN/2
33 M
REF
USB/ DOT
48M
0
1
0
1
0
100M
133M
14.318M
14.318M
14.318M
14.318M
TCLK
1
66M
66IN
48M
0
100M
66M
66M
48M
0
133M
66M
66M
66M
33 M
48M
M
TCLK/2
TCLK/4
TCLK/4
TCLK/4
TCLK/8
TCLK/2
Block Diagram
Pin Configuration
VDD_REF
X1
X2
XTAL
OSC
PWR
REF
Top View
PLL Ref Freq
VDD_REF
XIN
XOUT
1
2
3
4
48
47
46
45
44
43
42
REF
S1
Divider
PLL 1
GND_REF
PCI7
Network
CPU_STOP#
VDD_CPU
CPUT1:2
Stop
Clock
Control
PWR
Gate
PCI8
PCIF
VDD_CPU
CPUT1
5
6
S1:2
VTT_PWRGD##
CPU_STOP#
CPUC1:2
GND_PCI
PCI0
CPUC1
7
VDD_PCI
PCIF
GND_CPU
41
40
39
38
37
36
35
8
PWR
PCI1
VDD_CPU
CPUT2
9
PCI0:2
PCI4:8
Stop
Clock
Control
PCI2
10
11
VDD_PCI
PCI4
CPUC2
IREF
12
13
PCI_STOP#
PD#
PCI5
PCI6
S2
/2
VDD_3V66
3V66_0:1
USB_48MHz
14
15
16
17
18
PWR
34
33
VDD_3V66
GND_3V66
DOT_48MHz
3V66_2:4/
66BUFF0:2
VDD_48 MHz
GND_48 MHz
PWR
3V66_5/ 66IN
32
31
30
66BUFF0/3V66_2
66BUFF1/3V66_3
66BUFF2/3V66_4
3V66_1/VCH
19
20
21
22
23
24
PCI_STOP#
3V66_0
66IN/3V66_5
VDD_48MHz
USB (48MHz)
29
28
27
26
PLL 2
PWR
PD#
VDD_3V66
VDD_CORE
DOT (48MHz)
GND_3V66
SCLK
GND_CORE
VCH_CLK/ 3V66_1
VTT_PWRGD#
SDATA
25
SDATA
SCLK
SMBus
Logic
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.
Rev 1.0, November 25, 2006
Page 1 of 17
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www.SpectraLinear.com