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PDF PI6C106 Data sheet ( Hoja de datos )
| Número de pieza | PI6C106 | |
| Descripción | Pentium/Pro System Clock Chip | |
| Fabricantes | Pericom Semiconductor Corporation | |
| Logotipo |  |
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PI6C106
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Pentium/ProTM System Clock Chip
Features
• Three CPUs @2.5V, up to 100 MHz
• Seven PCIs @ 3.3V (including one free running, 1 early)
• One 48 MHz @ 3.3V fixed
• OneREF(3.3V,14.318MHz)
• OneIOAPIC(2.5V,14.318MHz)
• Strong REF clock (1V/ns @50pF load)
• Excellent power management features including
Power Down, PCI, and CPU stops
• Spread Spectrum for EMI control (0.5% down spread)
• Early PCI (2.5ns ±700ps)
• EnhancedPCICLK4(1.5X)
• 28-pin SSOP Packaging (H)
Block Diagram
Description
The PI6C106 is part of a reduced pin count two-chip clock solution
for designs using an Intel BX style chipset. Companion SDRAM
buffers are PI6C182 & PI6C184.
There are two PLLs, with the first PLL capable of spread spectum
operation. CPU frequencies up to 100 MHz are supported.
Frequency Table
SEL 100/66.6#
1
0
CPU MHz
100
66.6
PCI MHz
33.3
33.3
Pin Configuration
X1
X2
OSC
CPU_STOP#
SPREAD#
SEL 100/66.6#
PD#
PCI_STOP#
PLL
Spread
Spectrum
CPU
STOP
÷2 ÷3
BUS
STOP#
PLL2
REF0
VDDLA
IOAPIC
VDDLC
CPUCLK(0:2)
PCICLK_E
PCICLK(0:4)
PCICLK_F
48MHz
GND1
X1
X2
GND2
PCICLK_E
PCICLK_F
PCICLK0
PCICLK1
VDD2
PCICLK2
PCICLK3
PCICLK4/
SEL100/66.6#
VDD3
48MHz
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28-Pin
H
28 REF0
27 VDD1
26 IOAPIC
25 VDDLA
24 CPUCLK0
23 CPUCLK1
22 CPUCLK2
21 VDDLC
20 GND
19 PCI_STOP#
18 CPU_STOP#
17 PD#
16 SPREAD#
15 GND3
1 PS8546A 07/13/01
1 page  
PI6C106
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Absolute Maximum Ratings
Supply Voltage ........................................................... 7.0V
Logic Inputs ...............................GND 0.5 V to VDD +0.5 V
Ambient Operating Temperature .................. 0°C to +70°C
Storage Temperature ................................ 65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may
cause permanent damage to the device. These ratings arestress
specifications only and functional operation of the device at these
or any other conditions above those listed in theoperational sections
of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periodsmay affect product reliability.
Electrical Characteristics - Input/Supply/Common Output Parameters
TA = 0°C - 70°C; Supply Voltage VDD = VDDL = 3.3 V ±5% (unless otherwise stated).
Parameter
Symbol
Conditions
Min.
Typ. Max.
Units
Input High Voltage
Input Low Voltage
VIH
VIL
2
VSS0.3
VDD+0-
.3
0.8
V
Input High Current
IIH VIN = VDD
5
Input Low Current
IIL1 VIN = 0V; Inputs with no pull-up resistors
5
µA
Input Low Current
IIL2 VIN = 0V; Inputs with pull-up resistors
200
Operating
Supply Current
Input Frequency
IDD3.3OP
Fi
CL = 0pF; 66.6 MHz
CL = 0pF; 100 MHz
VDD = 3.3V
100
mA
100
12 16 MHz
Input Capacitance(1)
Transition Time(1)
Settling Time(1)
Clock Stabilization(1)
CIN
CINX
Ttrans
TS
TSTAB
Logic Inputs
X1 & X2 pins
To first crossing to 1% target frequency
From first crossing to 1% target frequency
From VDD = 3.3V to 1% target frequency
27
5
pF
45
3
2 ms
3
Electrical Characteristics - Input/Supply/Common Output Parameters
TA = 0°C - 70°C; Supply Voltage VDD = 3.3 V ±5%, VDDL = 2.5V ±5% (unless otherwise stated).
Parameter
Symbol
Conditions
Min.
Operating Supply Current IDD2.5OP
CL = 0pF; 66.8 MHz
CL = 0pF; 100 MHz
Power Down Current
Skew(1)
IDD2.5OP
TCPU_PCI(F,0:4)
VT = 1.5V / 1.25V; CPU Leads
1.5
TPCI(E) - PCIC(F)
VT = 1.5V
1.8
Typ. Max. Units
50
mA
50
100 µA
4
ns
3.2
Note: 1. Guaranteed by design, not 100% tested in production.
5
PS8546A 07/13/01
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet PI6C106.PDF ] | |
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