
S3C9654/C9658/P9658
CLOCK CIRCUIT
7-1
7
CLOCK CIRCUIT
OVERVIEW
The S3C9654/C9658/P9658 has three oscillation circuit options, a crystal/ceramic oscillation and a RC oscillation
and an external clock source. The crystal or ceramic oscillation source provides a maximum 6 MHz clock. The
X
IN and XOUT pins connect the oscillation source to the on-chip clock circuit. External clock and RC oscillation
and crystal/ceramic oscillator circuits are shown in Figures 7-1, 7-2, and 7-3.
S3C9654/
S3C9658
S3P9658
XOUT
XIN
Figure 7-1. External Oscillator
XIN
XOUT
R
S3C9654/
S3C9658
S3P9658
Figure 7-3. RC Oscillator
S3C9654/
S3C9658
S3P9658
XOUT
XIN
Figure 7-2. Main Oscillator Circuit
(Crystal/Ceramic Oscillator)