ICS525-02 ICST [Integrated Circuit Systems], ICS525-02 Datasheet - Page 2

• Manufacturer Part Number: ICS525-02
• Description: User Configurable Clock
• Manufacturer: ICST [Integrated Circuit Systems]

MDS 525-01/02/11/12 Q
Pin Assignment
Pin Descriptions
Integrated Circuit Systems, Inc.
Number
10 - 18
3, 4, 5
24-28
6, 23
9, 20
1, 2,
Pin
19
21
22
7
8
KEY: I(PU) = Input with internal pull-up resistor; X1, X2 = crystal connections
X1/ICLK
GND
VDD
R5
R6
S0
S1
S2
X2
V0
V1
V2
V3
V4
S0, S1, S2
X1/ICLK
R5, R6,
V0 - V8
Name
R0-R4
ICS525-01/-02/-11/-12
GND
VDD
REF
CLK
Pin
PD
X2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Output
Output
Power
Power
Type
I(PU)
I(PU)
I(PU)
Input
Pin
X1
X2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
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525 Race Street, San Jose, CA 95126
Reference divider word input pins determined by user. Forms a binary number from 0
Select pins for output divider determined by user. See table on page 3
Crystal connection. Connect to a parallel resonant fundamental crystal or input clock.
VCO divider word input pins determined by user. Forms a binary number from 0 to
to 127.
Connect to VDD.
Crystal connection. Connect to a crystal or leave unconnected for clock.
Connect to ground.
511.
Power-down. Active low. Turns off entire chip when low. Clock outputs stop low.
Output clock determined by status of R0-R6, V-V8, S0-S2, and input frequency.
Reference output. Buffered crystal oscillator (or clock ) output.
R4
R3
R2
R1
R0
VDD
REF
CLK
GND
PD
V8
V7
V6
V5
2
Pin Description
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tel [phone]
User Configurable Clock
ICS525-01/02/11/12
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www.icst.com
Revision 101105