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参数资料
| 型号： | IMISC473AAB |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | PROC SPECIFIC CLOCK GENERATOR, PQFP44 |
| 封装： | QFP-44 |
| 文件页数： | 1/7页 |
| 文件大小： | 90K |
| 代理商： | IMISC473AAB |
SC473
X86 Series Motherboard Clock Generator with Uncommitted
Buffers and Power Management
Approved Product
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
Rev.1.1
1/21/98
MILPITAS, CA 95035. TEL: 408-263-6300. FAX 408-263-6571
Page 1 of 7
PRODUCT FEATURES
Generate all essential clock signals for the
motherboards
4V to 7V Operating Supply Range
Supports 8086, 80286, 80386 and 80486 including
S Series
and Pentium based designs
Supports ISA, VESA and PCI based designs
Supports GREEN PC Applications
On-chip dual buffer banks
Integrates 32 Khz, 14.318 Mhz and CPU clocks
Wide range of selectable output frequencies
including 66.6, 60, 50, 40, 33.3, 30, 25, 20, 16.7,
16, 12.5, 8, and 4 Mhz
Doze mode for low power consumption
Smooth and glitch-free switching for programmable
clock generator
Low short and long term jitter
44 QFP package
BLOCK DIAGRAM
CLK GEN
1
CLK GEN
2
CLK GEN
3
MUX
32.7KHz
14.3 MHz
LF1
S0-S2
DOZE#
SL0-1
SP0-1
LF2
LF3
PD
SAMX
OE
B2OUT4
B2OUT3
B2OUT2
B2OUT1
B1OUT5
B1OUT4
B1OUT3
B1OUT2
B1OUT1
F12MHz
F24MHz
F16MHz
MCLK1
PCLK
MCLK2
CS14
BOSC14
REF32
X1
X2
PRODUCT DESCRIPTION
This clock generator is combining the feature of
IMISC468, IMISC470, and IMISC462 clock generators
such as DOZE#, selectable low frequencies, buffers
(24 MHz), MCLK2 and MCLK1, and also adding more
features as as fixed clocsk (16 Mhz, 24 Mhz, 12 Mhz,
and 32.7 Khz OE (buffer enable/disable pin), SAMX
(MUX for MCLK1 and PCLK) and power down.
FREQUENCY TABLE (MHz)
INPUT
MCLK
DOZE #
S2
S1
S0
SL1
SL0
MCLK2
MCLK1
0X
X
0
8
4
0
X
0
1
33.3
16.7
0X
X
1
0
16
8
0X
X
1
0
1
0
X
66.6
33.3
1
0
1
X
Test
40
1
0
1
0
X
60
30
1
0
1
X
25
12.5
1
0
X
40
20
1
0
X
50
25
1
X
Power
Down
Power
Down
PCLK FREQUENCY TABLE
INPUT
SP0
SP1
PCLK
00
33
01
25
10
16
1
Power Down
CONNECTION DIAGRAM
AVSS
LF!
LF2
LF3
AVDD
OVDD
X2in
X2out
OE
OVSS
VDD3
1
2
3
4
5
6
7
8
9
10
11
VSS2
F24Mhz
S2
S1
S0
SL1
SL0
SAMX
PD
DOZE#
VDD2
12
13
14
15
16
17
18
19
20
21
22
33
32
31
30
29
28
27
26
25
24
23
VSS3
REF32
B1out5
B1out4
B1out3
B1out2
B1out1
X1out
X1in
CS14
BOSC14
VSS1
VDD1
F12MHZ
F16MHZ
B2out4
B2out3
B2out2
B2out1
MCLK2
SP0
SP1
44
43
42
41
40
39
38
37
36
35
34
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IMISC610BYB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CPU System Clock Generator |
| IMISC652EYB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CPU System Clock Generator |
| IMISC660 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Clocks and Buffers |
| IMISC660EYB | 制造商:International Microcircuits Inc 功能描述:LOW SKEW CLOCK DRIVER, PDSO28 |
| IMISC670DYB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CPU System Clock Generator |
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