FS6245
Dual PLL VCXO Clock Generator IC
AMERICAN MICROSYSTEMS, INC.
December 2000
Table 2: Pin Descriptions
Key: AI = Analog Input; AO = Analog Output; DI = Digital Input; DIU = Input with Internal Pull-Up; DID = Input with Internal Pull-Down; DIO = Digital Input/Output; DI-3 = Three-Level Digital Input,
DO = Digital Output; P = Power/Ground; # = Active Low pin
PIN
TYPE
NAME
DESCRIPTION
1
-
N/C
No Connection
2
AI
XIN
VCXO Crystal Feedback
3
AO
XOUT / FREF VCXO Crystal Drive / External Reference Clock Input
4
P
VDD
Core Power Supply
5
AI
XTUNE
VCXO Tune Input
6
-
N/C
No Connection
7
P
VSS
Ground
8
DIU
OE
Output Enable
9
DO
CLKA
Clock Output “A”
10
-
N/C
No Connection
11
-
N/C
No Connection
12
-
N/C
No Connection
13
DO
CLKB
Clock Output “B”
14
P
VSS
Ground
15
P
VDDO
Output Power Supply (must be less than or equal to VDD)
16
-
N/C
No Connection
17
-
N/C
No Connection
18
DO
CLKC
Clock Output “C”
19
-
N/C
No Connection
20
-
N/C
No Connection
2
ISO9001
12.12.00