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RZ/A2M SUB Board RTK79210XXB00000BE
2.4
USB Interface
RTK79210XXB00000BE is equipped with a USB series A port x 1 and USB Mini-B port x 1 as the standard
configuration of USB connectors.
However, USB interface pins are shared by the Series A port pins and Mini-B port pins, therefore Series A port and
Mini-B port cannot be used at the same time.
Figure 2.4.1 shows USB interface block diagram, and Table 2.4.1 shows the functions setting tables of DIP switches
SW6-1 and SW6-3 for system setting.
RZ/A2M (U1)
USB_X1
PC_0 /
USB_X2
48MHz
(X2)
PC_5 /
P7_5 / CKE / DRP08 / CTS1 /
RREF
2.2kΩ±1%
USBAVss
Note:
Red text
indicates a function used.
：Indicates a function not implemented.
: Indicates a SUB board.
Figure 2.4.1
USB Interface Block Diagram
Table 2.4.1
Function Setting Table of DIP Switches SW6-1 and SW6-3 for System Setting
DIP
switch
SW6-1
P7_5 is used as CKE pin.
SW6-3
P7_5 is used as DRP08 and CTS1 pin.
[Note]
indicates setting functions.
R20UT4398EJ0100 Rev.1.00
2018.10.11
5
VBUS1
VBUSIN1
DP1
DP1
DM1
DM1
EN1
VBUSEN1
OC1#
OVRCUR1
ON
EN1
+
150μF
DM1
1
2
DP1
4
3
VBUS
1kΩ
VBUS1
1μF
1.8kΩ
SDRAM /
Other（USB）（U12）
3B1
OC1#
3A
OC1#
3B2
OE#
MUX
S
ON(L):A=B1, OFF(H):A=B2
3.3V
DIP
SW6-1
OFF
Function
P7_5 is used as OVRCUR1 pin (default setting).
P7_5 is used as OVRCUR1 pin (default setting).
2. Function specifications
VBUS power source control
IC (U29)
OUT1
OUT2
EN
USB Type-A receptacle（CN12）
VBUS
1μF
D-
D+
FG[1:2]
USB Mini-B receptacle（CN13）
VBUS
D-
D+
FRAME
1
1
To SDRAM
DRP /
Other（USB）（U11）
4B1
4A
FLG
4B2
OE#
MUX
S
ON(L):A=B1, OFF(H):A=B2
3.3V
DIP
SW6-3
OFF
OFF
5V
IN
3.3V
FLG
To DRP I/F
2-26
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