Integrated
Circuit
Systems, Inc.
ICS952302
Frequency Generator for Transmeta Efficeon
Recommended Application:
Transmeta Efficion, ATi M6
Output Features:
鈥?3 - CPUs @ 3.3V including 1 free running
CPUCLK_F
鈥?7 - PCI @ 3.3V, including 4 free running PCICLK_F
鈥?1 - 27MHz clock @ 3.3V
鈥?2 - 48MHz clocks @ 3.3V
鈥?/div>
2 - REF clocks @3.3V
Key Specifications:
鈥?CPU output jitter: < 250ps
鈥?PCI output skew: < 250ps
鈥?CPUT - PCI output skew: 1-3ns
鈥?27MHz Accuracy < 50ppm
鈥?48MHz Accuracy < 50ppm
TM
TM
Features:
鈥?Support I2C Index read/write and block read/write
operations.
鈥?Uses external 14.318MHz referience input or XTAL.
鈥?Full Load Power consumption reduced >10%
compared to reference device
鈥?Power management via SMBus
Functionality
Byte 4b7
0
0
0
0
1
1
1
1
Byte 4b6
0
0
1
1
0
0
1
1
Byte 4b5
0
1
0
1
0
1
0
1
Spread
%
Pin Configuration
VDDREF
1
REF0
2
GNDREF
3
X1
4
PCICLK1
11
PCICLK_F2
12
PCICLK_F3
13
VDDPCI
14
PCICLK2
15
GNDPCI
16
N/C
17
N/C
18
VDDCOR
19
PCI_STOP#
20
**PD#
21
GND48
22
SDATA
23
SCLK
24
ICS952302
+/-0.3
+/-0.6
+/-0.25
+/-0.45
-0.60%
-1.20%
-0.50%
-0.90%
CENTER
X2
5
VDDPCI
6
PCICLK_F0
7
PCICLK_F1
8
GNDPCI
9
PCICLK0
10
DOWN
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
REF1
VDDCPU
N/C
CPUCLK0
GNDCPU
CPUCLK1
CPUCLK_F
CPU_STOP#
GND
N/C
OE*
N/C
VDD
N/C
VDD27
GND
27MHZ
N/C
N/C
N/C
GND48
VDD48
48MHZ_1
48MHZ_0
48-TSSOP
* Internal Pull-Up Resistor
**No Diode Clamp to VDD
0957B鈥?0/05/04
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