ICS525-04
OSCAR USER CONFIGURABLE PECL CLOCK
PECL MULTIPLIER
IDT / ICS OSCAR USER CONFIGURABLE PECL CLOCK
3
ICS525-04
REV E 051310
Pin Descriptions
Pin
Number
Pin
Name
Pin
Type
Pin Description
1
R5
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
2
R6
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
3
S0
Input
Select pins for output divider determined by user. See table above. Internal pull-up.
4
S1
Input
Select pins for output divider determined by user. See table above. Internal pull-up.
5
S2
Input
Select pins for output divider determined by user. See table above. Internal pull-up.
6
VDD
Power
Connect to VDD.
7
X1/ICLK
Input
Crystal connection. Connect to a parallel resonant crystal or input clock.
8
X2
Input
Crystal connection. Connect to a crystal or leave unconnected for clock.
9
GND
Power
Connect to ground.
10 - 18
V0 - V8
Input
VCO divider word input pins determined by user. Forms a binary number from 0 to
511. Internal pull-up.
19
RES
Input
Bias resistor input. Connect a resistor between this pin and VDD.
20
GND
Power
Connect to ground.
21
PECL
Output
Complementary PECL output. Connect resistor load to this pin.
22
PECL
Output
PECL output. Connect resistor load to this pin.
23
VDD
Power
Connect to VDD.
24
R0
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
25
R1
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
26
R2
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
27
R3
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
28
R4
Input
Reference divider word input pins determined by user. Forms a binary number from 0
to 127. Internal pull-up.
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