CY28446
Clock Generator for Intel£ꢀCalistoga Chipset
• 33 MHz PCI clocks
Features
• Buffered 14.318 MHz reference clock
• Low-voltage frequency select input
• I2C support with readback capabilities
• 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
• Ideal Lexmark Spread Spectrum profile for maximum
electromagnetic interference (EMI) reduction
• 3.3V Power supply
• 64 pin QFN package
• SRC clocks stoppable through OE#
Table 1. Output Configuration Table
CPU
SRC
PCI
x5
REF
x1
DOT96
x 1
48M
x 1
x2/x3
x9/10
Pin Configuration
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
VSS_48
1
2
3
4
5
6
7
8
9
48 VDD_PCI
47 REF
SRCT0
SRCC0
OE0#
46 VSS_REF
45 XIN
SRCT1
SRCC1
OEA#
44 XOUT
43 VDD_REF
42 SDATA
41 SCLK
SRCT2
SRCC2
CY28446
40 CPU_STOP#
39 CPUT0
38 CPUC0
37 VSS_CPU
36 VDD_CPU
35 CPUT1
34 CPUC1
33 VSS_SRC
VDD_SRC 10
VSS_SRC 11
OE3# 12
SRCT3 13
SRCC3 14
OE6# 15
PCI_STOP# 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Rev 1.0, November 20, 2006
Page 1 of 19
2200 Laurelwood Road, Santa Clara, CA 95054
Tel:(408) 855-0555 Fax:(408) 855-0550
www.SpectraLinear.com
SPECTRALINEAR [ SPECTRALINEAR INC ]
