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PDF W83195AR-WE Data sheet ( Hoja de datos )
| Número de pieza | W83195AR-WE | |
| Descripción | 200MHZ 3-DIMM CLOCK FOR WHITNEY CHIPSET | |
| Fabricantes | Winbond | |
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Hay una vista previa y un enlace de descarga de W83195AR-WE (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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W83195AR-We
200MHZ 3-DIMM CLOCK FOR WHITNEY CHIPSET
1.0 GENERAL DESCRIPTION
The W83195AR-We is a Clock Synthesizer for Intel Solano chipset. W83195AR-We provides all
clocks required for high-speed RISC or CISC microprocessor and also provides 64 different
frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally
selectable with smooth transitions.
The W83195AR-We provides I2C serial bus interface to program the registers to enable or disable
each clock outputs and provides 0.5% and 0.75% center type spread spectrum to reduce EMI.
The W83195AR-We accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.
High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30
pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as
maintaining 50± 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide
better than 0.5V /ns slew rate.
2.0 PRODUCT FEATURES
• 2 CPU clocks
• 12 SDRAM clocks for 3 DIMMs
• 8 PCI synchronous clocks.
• Optional single or mixed supply:
(VddR = VddP=VddS = Vdd48 = Vdd3 = 3.3V, VddLAPIC=VddLCPU=2.5V)
• Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns
• Smooth frequency switch with selections from 66.8 to 200 MHz
• I2C 2-Wire serial interface and I2C read back
• 0.5% and 0.75% center type spread spectrum
• Programmable registers to enable/stop each output and select modes
(mode as Tri-state or Normal )
• Two 48 MHz pins for USB
• 24 MHz for super I/O
• 56-pin SSOP package
Publication Release Date: July 1999
- 1 - Revision 0.51
1 page  
W83195AR-We
PRELIMINARY
01111 1
137 102.75 4/3 68.50 34.25
17.13
34.25
SSE SS SS SS SS
L5 EL4 EL3 EL2 EL1
10000
10000
10001
10001
10010
10010
10011
10011
10100
10100
10101
10101
10110
10110
10111
10111
11000
11000
11001
11001
11010
11010
11011
11011
11100
11100
11101
11101
11110
11110
11111
SS
EL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
CPU
(MHz)
136
138
139
141
142
142
143
143
144
144
146
146
147
147
148
148
149
152
153
156
157
158
159
160
162
164
170
175
180
185
190
SDRAM
(MHz)
102.00
138.00
104.25
141.00
142.00
106.50
143.00
107.25
144.00
108.00
146
109.50
147
110.25
148.00
111.00
111.75
152.00
114.75
156.00
117.75
158.00
119.25
160.00
121.5
164.00
170.00
175
90
92.5
126.67
CPU/S
DRAM
4/3
1
4/3
1
1
4/3
1
4/3
1
4/3
1
4/3
1
4/3
1
4/3
4/3
1
4/3
1
4/3
1
4/3
1
4/3
1
1
1
4/3
2
3/2
3V66
(MHz)
68.00
69.00
69.50
70.50
71.00
71.00
71.50
71.50
72.00
72.00
73.00
73.00
73.50
73.50
74.00
74.00
74.50
76.00
76.50
78.00
78.50
79.00
79.50
80.00
81.00
82.00
85.00
87.5
60
61.67
63.33
PCI(M
Hz)
34.00
34.50
34.75
35.25
35.50
35.50
35.75
35.75
36.00
36.00
36.50
36.50
36.75
36.75
37.00
37.00
37.25
38.00
38.25
39.00
39.25
39.50
39.75
40.00
40.50
41.00
42.50
43.75
30
30.83
31.67
IOAPIC (MHz)
APIC_SEL=1
17.00
17.25
17.38
17.63
17.75
17.75
17.88
17.88
18.00
18.00
18.25
18.25
18.38
18.38
18.50
18.50
18.63
19.00
19.13
19.50
19.63
19.75
19.88
20.00
20.25
20.50
21.25
21.88
15
15.42
15.83
IOAPIC (MHz)
APIC_SEL=0
34.00
34.50
34.75
35.25
35.50
35.50
35.75
35.75
36.00
36.00
36.50
36.50
36.75
36.75
37.00
37.00
37.25
38.00
38.25
39.00
39.25
39.50
39.75
40.00
40.50
41.00
42.50
43.75
30
30.83
31.67
Publication Release Date: July 1999
- 5 - Revision 0.51
5 Page | ||
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| PDF Descargar | [ Datasheet W83195AR-WE.PDF ] | |
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