+/+
Product Features
•
•
•
•
•
•
•
•
•
•
•
•
…when timing is critical
C9810
IMI Confidential
Frequency Table (MHz)
SEL2
X
X
0
0
1
1
SEL1
0
0
1
1
1
1
SEL0
0
1
0
1
0
1
CPU
Tristate
66.6
100
133.3
133.3
Table 1
Low EMI Clock Generator for Intel
®
810 Chipset for Mobile Applications
Advanced Information
Intel’s Mobile 810 clock solution
2 copies of CPU Clock (CPU[1,2]
5 copies of SDRAM Clock (SDRAM[0:3] and DCLK)
7 copies of PCI Clock
2 copies of 3V66 Clock
2 copies of APIC Clock, synchronous to PCI Clock
1 REF Clock
1 USB Clock (Non SSC), 48MHz_0
1 DOT Clock (Non SSC), 48MHz_1
133 MHz SDRAM support
Spread Spectrum Support
2
I C Support for turning off unused clocks
SDRAM
Tristate
100
100
133.3
100
PCI
Tristate
33.3
33.3
33.3
33.3
Test mode (see table2)
Note: The following clocks remain fixed frequencies
except in Test Mode.
3V66=66.6MHz, USB/DOT=48MHz, REF=14.318MHz
and IOAPIC=33.3MHz.
Block Diagram
XIN
36pF
XB
UF 300K
36pF
XOUT
1
VDD
REF / SEL2
Pin Configuration
VDDI
s2
apic
2
VDDC
cpu
Rin
SCLK
SDATA
SEL1
SEL0
PD#
i2c-clk
i2c-data
s1
s0
pwr_dwn#
66m
2
VDD
pci
PLL1
Rin
PD#
1
i2c-clk
i2c-data
PLL2
USB (48MHz_0)
48
1
VDD
7
VDD
DOT (48MHz_1)
PCI(0:6)
sdram
5
VDD
3V66(0:1)
VDDS
SDRAM(0:3), DCLK
2
CPU(1:2)
IOAPIC(0:1)
Fig.1
VDD
XIN
XOUT
VSS
VSS66
3V66_0
3V66_1
VDD66
VDDP
PCI0
PCI1
PCI2
VSSP
PCI3
PCI4
VSSP
PCI5
PCI6
VDDP
VDDA
VSSA
VSS48
48MHz_0
48MHz_1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
SEL2/REF
VSSI
IOAPIC0
IOAPIC1
VDDI
VDDC
CPU1
CPU2
VSSC
VDDS
SDRAM0
SDRAM1
VSSS
DCLK
VDDS
SDRAM2
SDRAM3
VSSS
PWR_DWN#
SCLK
SDATA
sel1
sel0
VDD48
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
MILPITAS, CA 95035, USA TEL: 408-263-6300, FAX 408-263-6571
Rev 0.4
C9810
8/31/1999
Page 1 of 15
http://www.imicorp.com
CYPRESS [ CYPRESS SEMICONDUCTOR ]
