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W83194BR-S 데이터시트 PDF




Winbond에서 제조한 전자 부품 W83194BR-S은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 W83194BR-S 기능
기능 200MHZ 2-DIMM CLOCK FOR SOLANO CHIPSET
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W83194BR-S 데이터시트, 핀배열, 회로
W83194BR-S
200MHZ 2-DIMM CLOCK FOR SOLANO CHIPSET
1.0 GENERAL DESCRIPTION
The W83194BR-S is a Clock Synthesizer for Intel 815 Solano chipset. W83194BR-S 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 W83194BR-S provides I2C serial bus interface to program the registers to enable or disable each
clock outputs and provides 0.25% and 0.5% center type spread spectrum to reduce EMI.
The W83194BR-S provides stepless frequency programming by controlling the VCO freq. and the
clock output divisor ratio. Also the skew of CPU, SDRAM and 3V66 clock outputs are
programmable. A watch dog timer is quipped and when time out, the RESET# pin will output 4ms pulse
signal.
The W83194BR-S 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
3 3V66 for chipset and AGP clocks
9 SDRAM clocks for 2 DIMMs
7 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
0.25% and 0.5% center type spread spectrum
Programmable registers to enable/stop each output and select modes
Two 48 MHz pins for USB
24 MHz for super I/O
48-pin SSOP package
Publication Release Date:June 2000
-1-
Revision 0.42




W83194BR-S pdf, 반도체, 판매, 대치품
W83194BR-S
4.3 I2C Control Interface
SYMBOL
SDATA
SDCLK
PIN
25
28
PRELIMINARY
I/O FUNCTION
I/O Serial data of I2C 2-wire control interface
IN Serial clock of I2C 2-wire control interface
4.4 Fixed Frequency Outputs
SYMBOL
REFX2 / *FS3
PIN
3
*SIO_SEL/24_48MHz
23
48MHz_0
48MHz_1/ FS4#
21
22
I/O FUNCTION
I/O 14.318MHz reference clock. This REF output is the
stronger buffer for ISA bus loads.
Latched input for FS3 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks (Default=1).
I/O 24MHz or 48MHz output clock.
Latched input for SIO_SEL at initial power up for the
output frequency of 24MHz(HIGH) and 48MHz(LOW)
clocks.
O 48MHz output for USB during normal operation.
I/O 48MHz / Latched input for FS4 at initial power
up for H/W selecting the output frequency of CPU,
SDRAM and PCI clocks (Default=0).
4.5 Power Pins
SYMBOL
VddL
Vdd48
Vdd3
VddP
VddR
VddS
VddA
Vss
PIN FUNCTION
48 Power supply for CPU & IOAPIC, 2.5V or 3.3V.
24 Power supply for 48MHz output,3.3V.
6 Power supply for 3V_66 output, 3.3V.
16 Power supply for PCICLK, 3.3V.
2 Power supply for REFX2, 3.3V.
42,34
Power supply for SDRAM[0:8], nominal 3.3V.
27 Power for I2C CLK and DATA.
5,10,14,20,26,30,38, Circuit Ground.
43
-4-
Publication Release Date: June 2000
Revision
0.42

4페이지










W83194BR-S 전자부품, 판매, 대치품
W83194BR-S
011101
011110
011111
SSEL5 SSEL4 SSEL3 SSEL2 SSEL1 SSEL0
100000
100001
100010
100011
100100
100101
100110
100111
101000
101001
101010
101011
101100
101101
101110
101111
110000
110001
110010
110011
110100
110101
110110
110111
111000
111001
111010
111011
111100
111101
111110
111111
100.00
133.30
133.30
CPU
(MHz)
136.00
138.00
139.00
141.00
142.00
142.00
143.00
143.00
144.00
144.00
146.00
146.00
147.00
147.00
148.00
148.00
149.00
152.00
153.00
156.00
157.00
158.00
159.00
160.00
162.00
164.00
170.00
175.00
180.00
185.00
190.00
200.40
100.00
133.30
100.00
SDRAM
(MHz)
102.00
138.00
104.25
105.75
142.00
106.50
143.00
107.25
144.00
108.00
146.00
109.50
147.00
110.25
148.00
111.00
111.75
152.00
114.75
156.00
117.75
158.00
119.25
160.00
121.50
123.00
127.50
116.67
120.00
185.00
126.67
133.60
66.67
66.65
66.67
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
77.78
80.00
61.67
63.33
66.80
PRELIMINARY
33.33
33.33
33.33
16.67
16.66
16.67
PCI(MHz)
IOAPIC
(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
38.89
40.00
30.83
31.67
33.40
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
19.44
20.00
15.42
15.83
16.70
-7-
Publication Release Date: June 2000
Revision
0.42

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