Rainbow-electronics SBC35-A9G20-C11 Manual de usuario descargar pdf (Pagina 14)

1.2. Memory

Memory configuration

Designation Default setting Feature

SDRAM U4 & U8

R60

R65

Soldered

Enables U4 (D[16..31])chip select access

Enables U8 (D[0..15]) chip select access

NANDFlash U7

J15

R71

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

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

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

USERS GUIDE 1
SBC35-A9G20-A01 1
TABLE OF CONTENTS 2
AT91SAM9G20 3
Datasheet USG-00019-A01 4/24 4
SECTION 2 5
1.4. Powering Up the Board 6
1.5. Getting Started 6
SECTION 3 7
1. Board Description 7
Datasheet USG-00019-A01 8/24 8
Datasheet USG-00019-A01 9/24 9
1.1. Microcontroller 10
1.2. Memory 10
1.3. Clock Circuitry 11
1.4. Reset Circuitry 11
1.5. Power Circuitry 11
1.6. Remote Communication 11
1. Configuration 12
SECTION 4 12
Datasheet USG-00019-A01 13/24 13
1.3. Miscellaneous 14
1.4. Ethernet 14
Datasheet USG-00019-A01 15/24 15
Datasheet USG-00019-A01 16/24 16
Datasheet USG-00019-A01 17/24 17
Datasheet USG-00019-A01 18/24 18
SECTION 5 19
1. Schematics 19
Datasheet USG-00019-A01 20/24 20
Datasheet USG-00019-A01 21/24 21
Datasheet USG-00019-A01 22/24 22
Datasheet USG-00019-A01 23/24 23
1.1. Revision History 24

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