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CY24204
Document #: 38-07450 Rev. *C
Page 2 of 6
Frequency Select Options
OE
FS1
FS0
CLK1/CLK2[1]
REFCLK 1/2
Unit
000
off
27
MHz
001
off
27
MHz
010
off
27
MHz
011
off
27
MHz
100
27
27
MHz
1
0
1
27.027
27
MHz
1
1
0
74.250
27
MHz
1
1
1
74.17582418
27
MHz
Pin Description
Name
Pin Number
Description
XIN
1
Reference Crystal Input.
VDD
2
Voltage Supply.
AVDD
3
Analog Voltage Supply.
VCXO
4
Input Analog Control for VCXO.
AVSS
5
Analog Ground.
VSSL
6
CLK Ground.
REFCLK2
7
Reference Clock Output.
REFCLK1
8
Reference Clock Output.
CLK1
9
27/27.027/74.250/74.17582418-MHz Clock Output (Frequency Selectable).
FS0
10
Frequency Select 0, Weak Internal Pull-up.
VDDL
11
CLK Voltage Supply.
CLK2
12
27/27.027/74.250/74.17582418-MHz Clock Output (Frequency Selectable).
VSS
13
Ground.
FS1
14
Frequency Select 1, Weak Internal Pull-up.
OE
15
Output Enable, Weak Internal Pull-up.
XOUT
16
Reference Crystal Output.
Note:
1. “off” = output is driven HIGH.
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