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даташит W83194AR-96 PDF ( Datasheet )

W83194AR-96 Datasheet Download - Winbond

Номер произв W83194AR-96
Описание 200MHZ CLOCK FOR WHITNEY CHIPSET
Производители Winbond
логотип Winbond логотип 

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W83194AR-96 Даташит, Описание, Даташиты
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







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W83194AR-96 Даташит, Описание, Даташиты
3.0 PIN CONFIGURATION
REF1/*APIC_SEL
VDDR
Xin
Xout
VSS
VSS
3V66-0
3V66-1
VDD3
VDDP
PCICLK0/ FS0#
PCICLK1/ FS1#
PCICLK2/*SEL24_48#
VSS
PCICLK3/ FS4#
PCICLK4
PCICLK5
VDDP
PCICLK6
PCICLK7
VSS
PD#
*SDCLK
*SDATA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
W83194AR-96
PRELIMINARY
48 VddA
47 IOAPIC
46 VDDC
45 CPUCLK0
44 CPUCLK1
43 VSS
42 VSS
41 SDRAM 0
40 SDRAM 1
39 SDRAM 2
38 VDDS
37 SDRAM 3
36 SDRAM 4
35 SDRAM 5
34 VSS
33 SDRAM 6
32 SDRAM 7
31 SDRAM_F
30 VDDS
29 VSS
28 24_48MHz/ FS2#
27 48MHz-0
26 48MHz-1/ FS3#
25 VDD48
Publication Release Date: July 1999
- 2 - Revision 0.35







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W83194AR-96 Даташит, Описание, Даташиты
W83194AR-96
4.0 FREQUENCY SELECTION BY HARDWARE
PRELIMINARY
FS4 FS3 FS2 FS1 FS0 CPU
SDRAM
CPU 3V66 (MHz) PCI(MHz) IOAPIC (MHz) IOAPIC (MHz)
(MHz)
(MHz) /SDRAM
APIC_SEL=1 APIC_SEL=0
0 0 0 0 0 66.8 100.2 2/3 66.80 33.40 16.70
0 0 0 0 1 90
90
1
60.00 30.00
15.00
0 0 0 1 0 100.2 100.2
1
66.80 33.40
16.70
0 0 0 1 1 72
108
2/3 72.00 36.00
18.00
0 0 1 0 0 133.6 133.6
1
66.80 33.40
16.70
0 0 1 0 1 95.25 95.25
1
63.50 31.75
15.88
0 0 1 1 0 133.6 100.2 4/3 66.80 33.40 16.70
00 1
1 1 124
124
1
82.67 41.33
20.67
01 0
0 0 119
119
1
79.33 39.67
19.83
01 0
0 1 114
114
1
76.00 38.00
19.00
01 0
1 0 110
110
1
73.33 36.67
18.33
01 0
1 1 105
105
1
70.00 35.00
17.50
0 1 1 0 0 83.3 124.95 2/3 83.30 41.65 20.83
0 1 1 0 1 75 112.5 2/3 75.00 37.50 18.75
0 1 1 1 0 89.07 133.6 2/3 89.07 44.53 22.27
01 1
1 1 121
121
1
80.67 40.33
20.17
1 0 0 0 0 135 101.25 4/3 67.50 33.75 16.88
10 0
0 1 125
125
1
83.33 41.67
20.83
10 0
1 0 127
127
1
84.67 42.33
21.17
10 0
1 1 130
130
1
86.67 43.33
21.67
10 1
0 0 140
140
1
70.00 35.00
17.50
10 1
0 1 136
136
1
68.00 34.00
17.00
10 1
1 0 166
166
1
83.00 41.50
20.75
10 1
1 1 155
155
1
77.50 38.75
19.38
1 1 0 0 0 150 112.5 4/3 75.00 37.50 18.75
11 0
0 1 117
117
1
78.00 39.00
19.50
11 0
1 0 107
107
1
71.33 35.67
17.83
1 1 0 1 1 100.9 100.9
1
67.27 33.63
16.82
1 1 1 0 0 145 108.75 4/3 72.50 36.25 18.13
1 1 1 0 1 140 105
4/3 70.00 35.00
17.50
1 1 1 1 0 138 103.5 4/3 69.00 34.50 17.25
1 1 1 1 1 137 102.75 4/3 68.50 34.25 17.13
33.40
30.00
33.40
36.00
33.40
31.75
33.40
41.33
39.67
38.00
36.67
35.00
41.65
37.50
44.53
40.33
33.75
41.67
42.33
43.33
35.00
34.00
41.50
38.75
37.50
39.00
35.67
33.63
36.25
35.00
34.50
34.25
Publication Release Date: July 1999
- 3 - Revision 0.35










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