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)
32.768 kHz
(X3)
RTC_X1
RTC_X2
24 MHz
(X1)
EXTAL
XTAL
48 MHz
(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 ~24 MHz
PL_0 /
MD_CLKS
L=SSCG :OFF, H=SSCG:ON
CLK
P6_4 /
AUDIO_CLK
CLK
11 .2896 MHz
Socket
(
X1
)
MCLK
Audio CODEC
(
U21
)
DV_CLK
P7_2 /
DV0_CLK
CLK+
CLK-
LVDS connector
(
CN14
)
P4_6 /
TXCLKOUTP
P4_7 /
TXCLKOUTM
Socket
(
X5
)
REFCLK
CMOS camera connector
(
CN17
)
CLK
Socket
(
X 6
)
Ethernet PHY1
(
U27
)
CKXTAL2
Ethernet PHY2
(
U28
)
CKXTAL2
CKXTAL1
CKXTAL1
CLK
50MHz
(
X4)
AUDIO_X1
AUDIO_X2
X1
RL78
(
U23
)
X2
12 MHz
( X3)
3.3 V
VIO_CLK
P6_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
40 MHz