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PDF ICS952301 Data sheet ( Hoja de datos )
| Número de pieza | ICS952301 | |
| Descripción | Frequency Timing Generator for Transmeta Systems | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
ICS952301
Advance Information
Frequency Timing Generator for Transmeta Systems
Recommended Application:
Transmeta
Output Features:
• 1CPU up to 66.6MHz &
overclocking of 66MHz.
• 7 PCI (3.3V) @ 33.3MHz (all are free running
selectable) w/ 2 selectable 1X/2X.
• 1 REF (3.3V) at 14.318MHz.
• 1 48MHz (3.3V).
• 1 24_48MHz selectable output.
Features:
• Supports Spread Spectrum modulation for CPU and
PCI clocks, default -2.0% downspread.
• Efficient Power management scheme through stop
clocks and power down modes.
• Uses external 14.318MHz crystal, no external load
cap required for CL=18pF crystal.
• 28-pin TSSOP package, 4.40mm (173mil).
Skew Characteristics:
• PCI – PCI < 500ps
• CPU(early) – PCI = 1.5ns – 4ns.
Pin Configuration
GNDREF 1
X1 2
X2 3
PD# 4
PCICLK0 5
PCICLK1 6
GNDPCI 7
VDDPCI 8
PCICLK21 9
PCICLK3 10
PCICLK41 11
GNDPCI 12
VDDPCI 13
PCICLK5 14
28 VDDREF
27 REF/ 1X or 2X Programmable*
26 CPU_STOP#
25 VDDCPU/CORE
24 GNDCPU/CORE
23 CPUCLK0
22 PCI_STOP#
21 SCLK
20 VDD48
19 GND48
18 48MHz
17 24-48MHz/Sel 48_24#*
16 SDATA
15 PCICLK6
28-Pin 173mil TSSOP
Note: ^ Internal Pulldown Resistor
* Internal Pullup Resistor
1 1X/2X Programmable
Block Diagram
X1
XTAL
X2 OSC
REF
SCLOCK
SDATA
PD#
PCI_STOP#
SEL48_24#
CPU_STOP#
CPU
PLL
Control
Logic
PCI DIV
STOP
STOP
CPU
PCI(6:0)
48MHz
Power GroupsPLL
STOP
48MHz
VDD_Core, GND_Core = PLL core
24/48 STOP
24/48MHz
VDDREF, GNDREF = REF, X1, X2
VDDPCI, GNDPCI = PCICLK (6:0)
VDD48, GND48 = 48MHz (1:0)
0673—07/09/02
Pentium is a trademark on Intel Corporation.
ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.
ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners.
1 page  
Serial Configuration Command Bitmap
Byte0: Functionality and Frequency Select Register (default = 0)
Bit
Bit
2,7:4
Bit3
Bit1
Bit0
Bit2 Bit7 Bit6 Bit5 Bit4
FS4 FS3 FS2 FS1 FS0
CPU
0000 0
60
0000 1
60
0001 0
60
0001 1
60
0010 0
66.6
0010 1
66.6
0011 0
66.6
0011 1
66.6
0 1 0 0 0 67.32
0 1 0 0 1 68.64
0 1 0 1 0 69.96
0101 1
72.6
0110 0
61.5
0110 1
63
0111 0
64
0111 1
65
1000 0
60
1000 1
66.6
1001 0
50
1001 1
48
1010 0
58.8
1010 1
57.6
1011 0
56.4
1011 1
54
1100 0
60
1100 1
60
1101 0
60
1101 1
60
1110 0
66.6
1110 1
66.6
1111 0
66.6
1111 1
66.6
Reserved
0-Normal 1-Spread spectrun Enabled
0-Running 1-Tristate all outputs
Note: PWD = Power-Up Default
PCI
30
30
30
30
33.3
33.3
33.3
33.3
33.66
34.32
34.98
36.3
30.75
31.5
32
32.5
30
33.3
25
24
29.4
28.8
28.2
27
30
30
30
30
33.3
33.3
33.3
33.3
ICS952301
Advance Information
0673—07/09/02
5
5 Page 
ICS952301
Advance Information
Electrical Characteristics - 48MHz & 48/24MHz Output Type: 1
TA = 0 - 70C; VDD = 3.3 V , +/-5%; CL = 10 - 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Impedence
Rdsp VO = Vdd * 0.5
20 30 65 Ohm
Output High Voltage
VOH5 IOH = -12 mA
2.6 2.9
V
Output Low Voltage
VOL5 IOL = 9 mA
0.3 0.4 V
Output High Current
IOH5 VOH = 2.0 V
-29 -22 mA
Output Low Current
Rise Time1
Fall Time1
Duty Cycle1
IOL5 VOL = 0.8 V
tr5 VOL = 0.4 V, VOH = 2.4 V
tf5 VOH = 2.4 V, VOL = 0.4 V
dt5 VT = 1.5 V
16 51
mA
0.7 1.2 ns
0.7 1.2 ns
45 52 55 %
Jitter1
tjcyc-cyc5 VT = 1.5 V
tjabs5 VT = 1.5 V
164 500 ps
221 800 ps
Electrical Characteristics - PCICLK Output Type: 5
TA = 0 - 70C; VDD = 3.3 V,+/-5%; CL = 30 pF
PARAMETER
SYMBOL CONDITIONS
MIN
Output Impedence
Rdsp VO = Vdd * 0.5
12
Output High Voltage
VOH1 IOH = -18 mA
2.1
Output Low Voltage
VOL1 IOL = 9.4 mA
Output High Current
IOH1 VOH = 2.0 V
Output Low Current
Rise Time1
Fall Time1
Duty Cycle1
Skew1
Jitter
IOL1 VOL = 0.8 V
tr1 VOL = 0.4 V, VOH = 2.4 V
tf1 VOH = 2.4 V, VOL = 0.4 V
dt1 VT = 1.5 V
tsk1
tjcyc-cy
1
c
tjabs1
VT = 1.5 V
VT = 1.5 V
VT = 1.5 V
16
45
PCICLK(6:0)
TYP MAX UNITS
32 60 Ohm
2.8 V
0.15 0.4
V
-75 -22 mA
44 57 mA
1.6 2 ns
1.8 2 ns
50 55 %
16 500
100 500
210 500
ps
ps
ps
0673—07/09/02
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ICS952301.PDF ] | |
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