MK1714 Integrated Circuit System, MK1714 Datasheet - Page 2

• Manufacturer Part Number: MK1714
• Description: SpreaDSPectrum Multiplier Clock
• Manufacturer: Integrated Circuit System

MDS 1714-01 I
Integrated Circuit Systems, Inc.
Pin Assignment
Pin Descriptions
Note: When changing the input frequency, the LEE pin must be set low for minimum of 10 s to allow the PLL to lock
to the new frequency. Alternatively, the PD pin may be set low while changing frequencies.
Number
Pin
10
12
13
14
15
16
17
18
19
20
11
1
2
3
4
5
6
7
8
9
Name
XSEL
GND
GND
GND
GND
VDD
VDD
CLK
REF
LEE
Pin
NC
OE
PD
X2
X1
S4
S3
S2
S1
S0
GND
GND
VDD
VDD
CLK
X2
X1
S4
S3
S2
20 pin (150 mil) SSOP (QSOP)
Output Clock output dependent on input, multiplier, and spread amount per table on following page.
Output Reference clock output from crystal oscillator. This clock is not spread.
Power Connect to VDD. Must be same value as other VDD.
Power Connect to VDD. Must be same value as other VDD.
Power Connect to ground.
Power Connect to ground.
Power Connect to ground.
Power Connect to ground.
Type
Input
Input
Input
Input
Input
Input
Input
Input
Input
1
2
3
4
5
6
7
8
9
10
Pin
XO
XI
-
Low EMI Enable. Turns on spread spectrum on CLK when high. Internal pull-up.
Select pin 1. Determines multiplier and spread amount per table on following page. Internal
Crystal connection. Connect to parallel mode crystal. Leave open for clock.
Crystal connection. Connect to parallel mode crystal or clock.
Select pin 4. Determines multiplier and spread amount per table on following page. Internal
pull-down.
Select pin 3. Determines multiplier and spread amount per table on following page. Internal
pull-up.
Select pin 2. Determines multiplier and spread amount per table on following page. Internal
pull-up.
Connect to VDD for crystal input, or GND for CLK input. Internal pull-down.
pull-up.
No connect. Do not connect anything to this pin.
Select pin 0. Determines multiplier and spread amount per table on following page. Internal
pull-up.
Power down. Turns off chip when low. Outputs stop low. Leave open or connected to VDD if
power down is not required.
Output enable. Tri-states all outputs when low. Internal pull-up.
20
19
18
17
16
15
14
13
12
11
525 Race Street, San Jose, CA 95126
REF
OE
PD
GND
S0
NC
S1
GND
LEE
XSEL
2
Pin Description
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Spread Spectrum Multiplier Clock
www.icst.com
Revision 041003
MK1714-01