SL15316
11
SSCLK2 or REFCLK2
or PD#/OE/SSON#/FS
I/O
This pin can be programmed as SSCLK2 or REFCLK2.
12
13
14
15
SSCLK3 or REFCLK3
Output This pin can be programmed as SSCLK3 or REFCLK3.
SSCLK4 or REFCLK4 Output This pin can be programmed as SSCLK4 or REFCLK4.
VSS
Power Power supply ground.
SSCLK5 or REFCLK5
or PD#/OE/SSON#/FS
I/O This pin can be programmed as SSCLK5 or REFCLK5 or one of
PD#/OE/SSON#/FS functions.
16
VDDO
Power Positive power supply for pins 12, 13 and 15. can be 3.3V to 2.5V
or 1.8V +/-10% where VDDO≤VDD.
Available REFCLK Frequencies and Dividers
All REFCLK outputs are programmed by using buffered crystal or clock input and output dividers. These
outputs can not be programmed for spread spectrum clock function. The table below gives the available
output dividers for REFCLK outputs:
Pin Number
Pin Name
REFCLK1
REFCLK2
REFCLK3
REFCLK4
REFCLK5
Description
7
Crystal or clock input reference frequency divide by 1 to 32
Crystal or clock input reference frequency divide by 1 to 32
Crystal or clock input reference frequency (no divider)
Crystal or clock input reference frequency divide by 2 to 32
11
12
13
15
Crystal or clock input reference frequency divide by 2N where
N = 2 to 16.
Rev 1.0, August 7, 2008
Page 3 of 12
SPECTRALINEAR [ SPECTRALINEAR INC ]
