ASM3P2762A Datasheet, PDF (2/9 Pages) Alliance Semiconductor Corporation – Low Power Peak EMI Reducing Solution

XIN
XOUT
Crystal
Oscillator
ASM3P2762A
VDD
PD
Frequency
Divider
Feedback
Divider
Modulation
Phase
Detector
Loop
Filter
PLL
VCO
Output
Divider
ModOUT
VSS
Figure 1. Block Diagram
Table 1. PIN DESCRIPTION (6−Pin TSOT−23 Package)
Pin#
Pin Name
Type
Description
1
PD
I
Power−down control pin. Pull low to enable power−down mode. Connect to VDD if not used.
2
XOUT
O
Crystal connection. If using an external reference, this pin must be left unconnected.
3
XIN / CLKIN
I
Crystal connection or external reference frequency input. This pin has dual functions. It can be
connected either to an external crystal or an external reference clock.
4
V_DD
P
Power supply for the entire chip.
5
ModOUT
O
Spread spectrum clock output.
6
V_SS
P
Ground connection.
Table 2. PIN DESCRIPTION (8−Pin SOIC and TSSOP Packages)
Pin#
Pin Name
Type
Description
1
XIN / CLKIN
I
Crystal connection or external reference frequency input. This pin has dual functions. It can be
connected either to an external crystal or an external reference clock.
2
XOUT
O
Crystal connection. If using an external reference, this pin must be left unconnected.
3
PD
I
Power−down control pin. Pull low to enable power−down mode. Connect to VDD if not used.
4
NC
−
No connect.
5
V_SS
P
Ground connection.
6
ModOUT
O
Spread spectrum clock output.
7
NC
−
No connect.
8
V_DD
P
Power supply for the entire chip.
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