Clock Configuration - Renesas RZ/A Series User Manual

RZ/A2M CPU Board RTK7921053C00000BE
2.7

Clock Configuration

The following three types of clock are input to the RZ/A2M in RTK7921053C00000BE.
・RZ/A2M input clock
・RZ/A2M USB clock
・RZ/A2M RTC clock
Figure 2.7.1 shows the clock configuration. Table 2.7.1 shows the function setting for the system settings DIP switches
SW1-1 and SW1-2.
24 MHz
(X1)
48 MHz
(X2)
32.768 kHz
(X3)
NC
DIP
SW1-1
MUX
DIP
SW1-2
MUX
OFF
Figure 2.7.1 Clock Configuration
Table 2.7.1 Function Setting for System Settings DIP Switch SW1-1 and SW1-2
DIP switch
SW1-1 SSCG function OFF (Initial setting)
SW1-2 Sets EXTAL input peripheral frequency range from 10 to
12MHz.
(Setting prohibited)
[Note] shows the setting functions to select.
R20UT4397EJ0100 Rev.1.00
2018.10.11
：24 MHz
：48MHz
：32.768kHz
RZ/A2M (U1)
EXTAL
XTAL
USB_X1
USB_X2
RTC_X1
RTC_X2
PJ_7 /
AUDIO_X1
AUDIO_X2
3.3 V
PL_0 / MD_CLKS
L=SSCG:OFF, H=SSCG:ON
3.3 V
PL_1 / MD_CLK
L=10 to 12 MHz, H=20 to 24 MHz
Note: Red characters indicate
functions in use.
: Unmounted.
ON
SD0_CLK
SD1_CLK
CKIO
LCD0_EXTCLK
P7_2 / DV0_CLK
PJ_6 /
LCD0_CLK
P4_6 /
TXCLKOUTP
P4_7 /
TXCLKOUTM
P6_1 / VIO_CLK
P6_4 / AUDIO_CLK
function
2. Function specifications
microSD card slot (CN1)
SCLK
9
To SUB board
OFF
SSCG function ON
Sets EXTAL input peripheral frequency
range from 20 to 24MHz. (Initial setting)
2-23