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Clock circuitry, Reset circuitry, Power circuitry – Rainbow Electronics SBC35-A9G20-C11 User Manual

Page 11: Remote communication

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1x 32Kbytes of internal ROM

2x 4Kbytes of internal SRAM

1x 64Kbytes SPI EEPROM memory

1x 64Mbytes of SDRAM memory (32 bits bus width)

1x 256Mbytes of NAND Flash memory (8bits bus width)

Bank

Start address

Size

Description

Internal memories

0x00000000

256Mbytes

EBI CS0

0x10000000

256Mbytes

Expansion connectors

EBI CS1 (SDRAMC)

0x20000000

64Mbytes

Soldered SDRAM

EBI CS2

0x30000000

Not available

EBI CS3 (NAND)

0x40000000

256Mbytes

Soldered NAND Flash

EBI CS4 (CF slot 0)

0x50000000

-

Compact Flash Interface

EBI CS5

0x60000000

256Mbytes

Expansion connectors

EBI CS6

0x70000000

Not available

EBI CS7

0x80000000

256Mbytes

Expansion connectors

1.3. Clock Circuitry

12Mhz standard oscillator

Selectable 32768Hz low power external standard crystal Oscillator or internal low power
RC oscillator

1.4. Reset Circuitry

Internal reset controller with bi-directional reset pin

External reset pushbutton

1.5. Power Circuitry

On board 1.0V low dropout linear regulator

On board 3.3V low dropout linear regulator

1.6. Remote Communication

1x complete modem serial interface (COM Port 0) via RS232 DB9 male connector

2x additional serial interfaces with RTS/CTS handshake control via HE10-2x5 connector
(TTL level signals)

1x DBGU serial port TTL via HE10-2x5 (TTL level signals)

2x USB Host ports V2.0 full speed compliant, 12Mbits per second (UHP)

1x USB V2.0 full speed compliant, 12Mbits per second (UDP)

Datasheet USG-00019-A01

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