asm3x2105a Alliance Memory, Inc, asm3x2105a Datasheet - Page 2

• Manufacturer Part Number: asm3x2105a
• Description: Frequency Reduction
• Manufacturer: Alliance Memory, Inc

October 2003
rev 1.0
Pin Configuration
Pin Description
Pin#
Spread Deviation Table
1
2
3
4
5
6
7
8
SR0
1
0
Pin Name
MODOUT
XIN/CLK
SSON#
XOUT
DIV2
VDD
VSS
SR0
Spread Deviation (%)
Reserved
Type
±1
O
P
O
P
I
I
I
I
Notice: The information in this document is subject to change without notice.
Crystal connection or external reference frequency input. This pin has dual
functions. It can be connected to either an external crystal or an external
reference clock.
Crystal connection. If using an external reference, this pin must be left
unconnected.
Digital logic input used to select normal output mode or divide-by-2 output
mode. When this pin is HIGH, the frequency of the output clock is the same
as the input clock frequency. When it is tied LOW, the output frequency is
half the input clock frequency. This pin has an internal pull-up resistor.
Ground to entire chip.
Digital logic input used to select Spreading Range (Refer Spread Deviation
Table). This pin has an internal pull-up resistor.
Digital logic input used to enable Spread Spectrum function (Active LOW).
Spread Spectrum function enabled when LOW, disabled when HIGH. This
pin has an internal pull-low resistor.
Spread spectrum low EMI output.
Power supply for the entire chip (5V).
Low Frequency EMI Reduction
XIN /CLK
XOUT
DIV2
VSS
3
1
2
4
ASM3X2105A
7
5
8
6
VDD
MODOUT
SSON#
SR0
Description
ASM3X2105A
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