Sony CXD5602 User Manual page 250


RCOSC (standard operating frequency of 8.13 MHz)

XOSC

CK_SCU_32K (RTC clock or RCOSC divided by 250)
For the XOSC, frequency divisions of 1, 2, 3, or 4 can be selected by the CRG. However, since the maximum
operating frequency of the SCU is 13 MHz, you will need to select the appropriate frequency division in
accordance with the crystal oscillator that is connected from outside. Use the API to select these clock sources, the
XOSC frequency division, and the source for the CK_SCU_32K.
3.9.4.3 Logic System (Low Speed) Clock
CK_SCU_32K
The Logic System (Low Speed) Clocks operate at around 32.768 kHz and are generated from one of the below
clock sources.

RTC (32.768 kHz)

RCOSC divided by 250
Use the API to select these clock sources.
3.9.4.4 HPADC Clock and LPADC Clock
For details on the HPADC clock and LPADC clock, refer to the Chapter on ADC (3.21) clock control.
3.9.4.5 Clock Control Summary
The following table summarizes the selection of input clocks. For details on the LPADC and HPADC clocks,
refer to the Chapter on ADC (3.21).
Table SCU (Sensor Control Unit)-83 Input Clock Source Selection
(*)
Clock Source Selector
・RTC
・RCRTC (RCOSC divided
by 250)
Frequency Clock Source Selector
Division
Circuit (*)
・
None
RCOSC
(directly operating
connected) 8.192 MHz)
・XOSC (after selecting to
divide by 1, 2, 3, or 4)
・ The clock selected by
Selector 1
－250/1010－
(*)
Clock Port Name
CK_SCU_SCU
(standard
frequency of
CK_SCU_SCU_SC
CXD5602 User Manual
Description
Main clock
Can be controlled from the
SCU and HOSTIFC
Main clock
Cannot be controlled from
the SCU or HOSTIFC
(supplied to the ADCIF and
INTC)