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PDF W83194AR-96 Data sheet ( Hoja de datos )
| Número de pieza | W83194AR-96 | |
| Descripción | 200MHZ CLOCK FOR WHITNEY CHIPSET | |
| Fabricantes | Winbond | |
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W83194AR-96
200MHZ CLOCK FOR WHITNEY CHIPSET
1.0 GENERAL DESCRIPTION
The W83194AR-96 is a Clock Synthesizer for Intel Whitney chipset. W83194AR-96 provides all
clocks required for high-speed RISC or CISC microprocessor and also provides 32 different
frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally
selectable with smooth transitions.
The W83194AR-96 provides I2C serial bus interface to program the registers to enable or disable
each clock outputs and provides 0.25% center and 0-0.5% down type spread spectrum to reduce EMI.
The W83194AR-96 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.
1.0 PRODUCT FEATURES
• 2 CPU clocks
• 9 SDRAM clocks for 2 DIMMs
• 8 PCI synchronous clocks.
• Optional single or mixed supply:
(VDDR = VDDP=VDDS = VDD48 = VDD3 = 3.3V, VDDA=VDDC=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 200MHz
• I2C 2-Wire serial interface and I2C read back
• 0.25% or 0.5% center type spread spectrum
• Programmable registers to enable/stop each output and select modes
(mode as Tri-state or Normal )
• 48 MHz for USB
• 24 MHz for super I/O
• Packaged in 48-pin SSOP
Publication Release Date: July 1999
- 1 - Revision 0.35
1 page  
W83194AR-96
PRELIMINARY
SSE SS SS SS SS SS CPU SDRAM CPU/SD 3V66
L5 EL4 EL3 EL2 EL1 EL0 (MHz) (MHz)
RAM
(MHz)
1 0 0 0 0 0 136 102.00 4/3 68.00
1 0 0 0 0 1 138 138.00 1 69.00
1 0 0 0 1 0 139 104.25 4/3 69.50
1 0 0 0 1 1 141 141.00 1 70.50
1 0 0 1 0 0 142 142.00 1 71.00
1 0 0 1 0 1 142 106.50 4/3 71.00
1 0 0 1 1 0 143 143.00 1 71.50
1 0 0 1 1 1 143 107.25 4/3 71.50
1 0 1 0 0 0 144 144.00 1 72.00
1 0 1 0 0 1 144 108.00 4/3 72.00
1 0 1 0 1 0 146 146
1 73.00
1 0 1 0 1 1 146 109.50 4/3 73.00
1 0 1 1 0 0 147 147
1 73.50
1 0 1 1 0 1 147 110.25 4/3 73.50
1 0 1 1 1 0 148 148.00 1 74.00
1 0 1 1 1 1 148 111.00 4/3 74.00
1 1 0 0 0 0 149 111.75 4/3 74.50
1 1 0 0 0 1 152 152.00 1 76.00
1 1 0 0 1 0 153 114.75 4/3 76.50
1 1 0 0 1 1 156 156.00 1 78.00
1 1 0 1 0 0 157 117.75 4/3 78.50
1 1 0 1 0 1 158 158.00 1 79.00
1 1 0 1 1 0 159 119.25 4/3 79.50
1 1 0 1 1 1 160 160.00 1 80.00
1 1 1 0 0 0 162 121.5 4/3 81.00
1 1 1 0 0 1 164 164.00 1 82.00
1 1 1 0 1 0 170 170.00 1 85.00
1 1 1 0 1 1 175 175
1 87.5
1 1 1 1 0 0 180 120 2/3 60
1 1 1 1 0 1 185 92.5
2 61.67
1 1 1 1 1 0 190 126.67 3/2 63.33
1 1 1 1 1 1 200.4 133.60 3/2 66.80
PCI
(MHz)
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
33.40
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
16.70
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
33.40
Publication Release Date: July 1999
- 5 - Revision 0.35
5 Page 
7.0 ORDERING INFORMATION
Part Number
W83194AR-96
Package Type
48 PIN SSOP
W83194AR-96
PRELIMINARY
Production Flow
Commercial, 0°C to +70°C
8.0 HOW TO READ THE TOP MARKING
W83194AR-96
28051234
814GAB
1st line: Winbond logo and the type number: W83194AR-96
2nd line: Tracking code 2 8051234
2: wafers manufactured in Winbond FAB 2
8051234: wafer production series lot number
3rd line: Tracking code 814 G B B
814: packages made in '98, week 14
G: assembly house ID; O means OSE, G means GR
A: Internal use code
B: IC revision
All the trade marks of products and companies mentioned in this data sheet belong to their
respective owners.
- 11 -
Publication Release Date: July 1999
Revision 0.35
11 Page | ||
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