Rainbow Electronics SBC35-A9G20-C11 - Manual (Page 14)

1.2. Memory
Memory configuration
Designation Default setting Feature
SDRAM U4 & U8
R60
R65
Soldered
Soldered
Enables U4 (D[16..31])chip select access
Enables U8 (D[0..15]) chip select access
NANDFlash U7
J15
R71
S2
closed
Soldered
Opened
Enables the use of NANDFlash
Enables the use of Ready/busy signal
Disables write protect
1.3. Miscellaneous
Designation Default setting Feature
R15 soldered USB device: Enables the use of USBCNX signal.
R46
R47
R45
R19
R18
R52
R16
R17
R53
soldered
soldered
soldered
soldered
soldered
soldered
soldered
soldered
soldered
RTS0
TXD0
DTR0
DCD0
DSR0
RXD0
CTS0
RI0
Receiver outputs enabled.
1.4. Ethernet
The Ethernet PHY DP83848 is wired in RMII mode.
1.5. Expansion connectors J10 & J11
Datasheet USG-00019-A01 14/24