User`s guide

LZ87010 Advance User’s Guide System Clocking
1/15/03 2-3
Figure 2-2. Internal Clock Generation
LZ87010-81
SUB-CLOCK
OSCILLATOR
nEN
nEN
CLOCK
DIVIDER
IDLE
SCLK
CCLK
XTAL_SUB1
XTAL_SUB2
STOP
ENABLE
ADCCLK
DIV
ADC
CLOCK
DIVIDER
DIV
MUX
1
0
SEL
HIGH-
FREQUENCY
OSCILLATOR
CLKCFG.CLKSEL
CLKCFG.CLKDIV
3
CLKCFG.ADCDIV
3
1
1
1
PCON.IDLPCON.PD
STOP IDLE
HFCLK
XTAL1
XTAL2
DIVIDE-
BY 2
PCLK
INTERNAL TO
THE LZ87010
EXTERNAL TO
THE LZ87010
SUBCLK