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PDF ICS932S825 Data sheet ( Hoja de datos )
| Número de pieza | ICS932S825 | |
| Descripción | Low Power Clock Chip | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
ICS932S825
Low Power Clock Chip for Serverworks HT2400 Servers
Recommended Application:
Serverworks HT2400-based systems using AMD Opteron
processors
Output Features:
• 7 - Pairs of AMD Low Power K8 Greyhound
compliant clocks
• 7 - Pair of SRC/PCI Express* Gen 2 clocks
• 3 - 14.318 MHz REF clocks including 1 free-running
• 2 - 48MHz clocks
• 2 - PCI 33 MHz clocks
• 2 - 25MHz clocks
Features:
• Spread Spectrum for EMI reduction
• Outputs may be disabled via SMBus
• M/N programming via SMBus
• PCIe clocks meet PCIe Gen 2.
• Low Power differential outputs
Functionality
FS2 FS1 FS0
000
001
010
011
100
101
110
111
CPU
(MHz)
Hi-Z
X/6
180.00
220.00
100.00
133.33
Reserved
200.00
Pin Configuration
X1 1
X2 2
VDDREF_STB 3
REF0_RUN_2x 4
FS1/REF1_2x 5
FS2/REF2_2x 6
GNDREF 7
VDD48 8
48MHz_0_2x 9
48MHz_1_2x 10
GND48 11
SCLK 12
SDATA 13
VDDPCI 14
PCICLK0_2x 15
PCICLK1_2x 16
GNDPCI 17
CLKPWRGD/PD# 18
GND 19
VDDA 20
GNDA 21
GND 22
PCIeT_L0 23
PCIeC_L0 24
PCIeT_L1 25
PCIeC_L1 26
GND 27
VDDPCIe 28
PCIeT_L2 29
PCIeC_L2 30
PCIeT_L3 31
PCIeC_L3 32
64-TSSOP
64 VDD25MHz
63 FS0/25MHz_0_2x
62 25MHz_1_2x
61 GND25MHz
60 SPREAD_EN
59 CPUK8GT_L6
58 CPUK8GC_L6
57 CPUK8GT_L5
56 CPUK8GC_L5
55 VDDCPU
54 GND
53 CPUK8GT_L4
52 CPUK8GC_L4
51 CPUK8GT_L3
50 CPUK8GC_L3
49 CPUK8GT_L2
48 CPUK8GC_L2
47 VDDCPU
46 GND
45 CPUK8GT_L1
44 CPUK8GC_L1
43 CPUK8GT_L0
42 CPUK8GC_L0
41 GND
40 PCIeT_L6
39 PCIeC_L6
38 PCIeT_L5
37 PCIeC_L5
36 VDDPCIe
35 GND
34 PCIeT_L4
33 PCIeC_L4
Power Groups
Pin Number
VDD
8
64
14
20
36, 28
55, 47
3
GND
11
61
17
21
35, 27
54, 46
7
Description
48MHz Clocks
25MHz Clocks
33 MHz PCI Clocks
Analog Core
PCIe clocks
K8G CPU Clocks
REF Clocks, Xtal Osc.
1276D—10/25/07
*Other names and brands may be claimed as the property of others.
1 page  
ICS932S825
Frequency Selection Table
Byte 0
Bit 4 Bit 3 Bit2 Bit1 Bit0 CPU
SS_EN FS3 FS2 FS1 FS0 (MHz)
0 0 0 0 0 Hi-Z
0
0 001
X/4
0 0 0 1 0 180.00
0 0 0 1 1 220.00
0 0 1 0 0 100.00
0 0 1 0 1 133.33
0 0 110
0 0 1 1 1 200.00
0 1 0 0 0 184.00
0 1 0 0 1 188.00
0 1 0 1 0 192.00
0 1 0 1 1 196.00
0 1 1 0 0 204.00
0 1 1 0 1 208.00
0 1 1 1 0 212.00
0 1 1 1 1 216.00
1 0 0 0 0 Hi-Z
1
0 001
X/4
1 0 0 1 0 180.00
1 0 0 1 1 220.00
1 0 1 0 0 100.00
1 0 1 0 1 133.33
1 0 110
1 0 1 1 1 200.00
1 1 0 0 0 184.00
1 1 0 0 1 188.00
1 1 0 1 0 192.00
1 1 0 1 1 196.00
1 1 1 0 0 204.00
1 1 1 0 1 208.00
1 1 1 1 0 212.00
1 1 1 1 1 216.00
SRC
(MHz)
Hi-Z
X/8
90.00
110.00
100.00
100.00
100.00
92.00
94.00
96.00
98.00
102.00
104.00
106.00
108.00
Hi-Z
X/8
90.00
110.00
100.00
100.00
100.00
92.00
94.00
96.00
98.00
102.00
104.00
106.00
108.00
PCI Spread OverClock
(MHz) % Amount
Hi-Z
x/24
30.00
36.67
33.33
33.33
Reserved
33.33
30.67
31.33
32.00
32.67
34.00
34.67
35.33
36.00
Hi-Z
x/24
30.00
36.67
33.33
33.33
Reserved
33.33
30.67
31.33
32.00
32.67
34.00
34.67
35.33
36.00
N/A
N/A
0
0
0
0
0
0
0
0
0
0
0
0
0
N/A
N/A
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
-0.5%
N/A
N/A
0.90
1.10
1.00
1.00
1.00
0.92
0.94
0.96
0.98
1.02
1.04
1.06
1.08
N/A
N/A
1.00
1.00
1.00
1.00
1.00
0.92
0.94
0.96
0.98
1.02
1.04
1.06
1.08
1276D—10/25/07
5
5 Page 
ICS932S825
Electrical Characteristics - REF-14.318MHz
TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL = 5 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Long Accuracy
ppm
see Tperiod min-max values
-300
300 ppm
Clock period
Tperiod
14.318MHz output nominal
69.8270
69.8550 ns
Output High Voltage
VOH
IOH = -1 mA
2.4
V
Output Low Voltage
VOL
IOL = 1 mA
0.4 V
Output High Current
Output Low Current
IOH
V OH @MIN = 1.0 V,
OH@MAX = 3.135 V
V
-29
IOL
VOL @MIN = 1.95 V,
@MAX = 0.4 V
VOL
29
-23 mA
27 mA
Edge Rate
δV/δt
Rising edge rate
1
2 V/ns
Edge Rate
δV/δt
Falling edge rate
1
2 V/ns
Skew
tsk1
VT = 1.5 V
500 ps
Duty Cycle
dt1
VT = 1.5 V 45 55 %
Jitter, Cycle to cycle
tjcyc-cyc
VT = 1.5 V
1000
ps
1Guaranteed by design and characterization, not 100% tested in production.
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz
Notes
1
2
1
1
1
1
1
1
1
1
1
1276D—10/25/07
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ICS932S825.PDF ] | |
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