CY28446 Datasheet, PDF (1/21 Pages) SpectraLinear Inc – Clock Generator for Intel® Calistoga Chipset

CY28446
Clock Generator for Intel^® Calistoga Chipset
Features
• Compliant to Intel^® CK410M
• Selectable CPU frequencies
• Low power differential CPU clock pairs
• 100-MHz low power differential SRC clocks
• 96-MHz low power differential DOT clock
• 48-MHz USB clock
• SRC clocks stoppable through OE#
Table 1. Output Configuration table
CPU
SRC
PCI
x2 / x3
x9/10
x5
• 33-MHz PCI clocks
• Buffered 14.318-MHz reference clock
• Low-voltage frequency select input
• I²C support with readback capabilities
• Ideal Lexmark Spread Spectrum profile for maximum
electromagnetic interference (EMI) reduction
• 3.3V power supply
• 64-pin QFN package
REF
DOT96
48M
x1
x1
x1
Pin Configuration
VSS_48
SRCT0
SRCC0
OE0#
SRCT1
SRCC1
OEA#
SRCT2
SRCC2
VDD_SRC
VSS_SRC
OE3#
SRCT3
SRCC3
OE6#
PCI_STOP#
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
9
CY28446
41
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
VDD_PCI
REF
VSS_REF
XIN
XOUT
VDD_REF
SDATA
SCLK
CPU_STOP#
CPUT0
CPUC0
VSS_CPU
VDD_CPU
CPUT1
CPUC1
VSS_SRC
Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Document #: 001-00168 Rev *D
Revised April 03, 2006