RZ/A2M SUB Board RTK79210XXB00000BE 2. Function specifications
R20UT4398EJ0100 Rev.1.00 2-29
2018.10.11
2.7 Clock Configuration
RZ/A2M receives the following three types of clock inputs from the RZ/A2M CPU board.
・RZ/A2M input clock :24 MHz
・RZ/A2M USB clock :48 MHz
・RZ/A2M RTC clock :32.768 kHz
RZ/A2M receives the following two clock inputs from RTK79210XXB00000BE.
・RZ/A2M audio clock :11.2896MHz
・RZ/A2M VDC6 clock :40MHz
Figure 2.7.1 shows clock configuration diagram, and Table 2.7.1 shows the function setting table of DIP switches
SW6-4 and SW6-6 for system setting.
Figure 2.7.1 Clock Configuration Diagram
RZ/A2M (U1)
32.768kHz
(X3)
RTC_X1
RTC_X2
24MHz
(X1)
EXTAL
XTAL
48MHz
(X2)
USB_X1
USB_X2
NC
CKIO
CLK
SDRAM(U30)
PJ_6 /
LCD0_CLK
VDC6 connector (CN15)
LCD_CLK
SD0_CLK
SD1_CLK
PJ_7 / LCD0_EXTCLK
SCLK
microSD card slot (CN1)
CLK
SD card slot (CN10)
PL_1 / MD_CLK
L=10~12MHz, H=20~24MHz
PL_0 / MD_CLKS
L=SSCG:OFF, H=SSCG:ON
CLK
P6_4 / AUDIO_CLK
CLK
11.2896MHz
Socket(X1)
MCLK
Audio CODEC(U21)
DV_CLKP7_2 / DV0_CLK
CLK+
CLK-
LVDS connector (CN14)
P4_6 /
TXCLKOUTP
P4_7 /
TXCLKOUTM
Socket(X5)
REFCLK
CMOS camera connector (CN17)
CLK
Socket(X6)
Ethernet PHY1(U27)
CKXTAL2
Ethernet PHY2(U28)
CKXTAL2
CKXTAL1
CKXTAL1
CLK
50MHz
(X4)
AUDIO_X1
AUDIO_X2
X1
RL78(U23)
X2
12MHz
(X3)
3.3V
VIO_CLKP6_1 / VIO_CLK
Note: Red text indicates a function used.
:Indicates a function not implemented.
:Indicates a SUB board.
MUX
MUX
DIP
SW1-2
3.3V
DIP
SW1-1
3.3V
OFF
MUX
MUX
40MHz