SC675
Audio and Peripheral Clock Generator
Approved Product
PRODUCT FEATURES
Select
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FREQUENCY TABLE
Audio Frequency
Outputs(MHz)
Faud
Xin/2
24.576
33.868
LOW
HFaud
Xin/4
12.288
16.934
LOW
Fixed Frequency
Outputs(MHz)
SREF0
REF1,2
Xin
14.318
14.318
14.318
48
Xin/
2
48
48
48
24
Xin/
4
24
24
24
S1
0
0
1
1
S0
0
1
0
1
Supports Intel architecture based desktop for
complimenting the IMI SC673 and SC674 in the
430 TX, and the next generation chipsets from
Intel.
2 USB clocks and 1 SIO clock.
Selectable audio clocks.
Supports 5V or 3.3V.
20 Pin SSOP for minimum board space.
n
n
n
n
BLOCK DIAGRAM
CONNECTION DIAGRAM
VDD
Xin
Xout
VSS
OE
Faud
HFaud
VDD
S0
S1
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
REF2
REF1
VDD
SREF0
VSS
48 MHz
48 MHz
VDD
24 MHz
VSS
XIN
REF
XOUT
S0
S1
SREF0
2
REF(1:2)
PLL1
B
B
2
Faud
HFaud
48 MHz
24 MHz
PLL2
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
MILPITAS, CA 95035. TEL: 408-263-6300. FAX 408-263-6571
Rev.1.3
3/21/97
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