RZ/A2M SUB Board RTK79210XXB00000BE
2. Function specifications
R20UT4398EJ0100 Rev.1.00
2-26
2018.10.11
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.
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
Function
ON
OFF
SW6-1
P7_5 is used as CKE pin.
P7_5 is used as OVRCUR1 pin (default setting).
SW6-3
P7_5 is used as DRP08 and CTS1 pin.
P7_5 is used as OVRCUR1 pin (default setting).
[Note] indicates setting functions.
RZ/A2M (U1)
DP1
5
P7_5 / CKE / DRP08 / CTS1 /
OVRCUR1
DM1
DP1
DM1
PC_5 /
VBUSEN1
DM1
DP1
48MHz
(X2)
USB_X1
USB_X2
RREF
USBAVss
PC_0 /
VBUSIN1
VBUS1
EN1
EN1
USB Type-A receptacle
（
CN12
）
D-
VBUS
D+
VBUS power source control
IC (U29)
EN
IN
OUT1
FLG
5V
USB Mini-B receptacle
（
CN13
）
D-
VBUS
D+
VBUS1
SDRAM /
Other
（
USB
）
（
U12
）
1
To SDRAM
3.3V
DIP
SW6-1
DRP /
Other
（
USB
）
（
U11
）
1
3.3V
DIP
SW6-3
MUX
OE#
S
3A
3B1
3B2
MUX
OE#
S
4A
4B1
4B2
To DRP I/F
FLG
OFF
OFF
1
2
4
3
VBUS
3.3V
OC1#
OC1#
FG[1:2]
FRAME
OC1#
OUT2
Note:
Red text
indicates a function used.
：
Indicates a function not implemented.
: Indicates a SUB board.
2.2k
Ω±1%
+
150
μF
1k
Ω
1
μF
1
μF
ON(L):A=B1, OFF(H):A=B2
ON(L):A=B1, OFF(H):A=B2
1.8k
Ω
