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ABOUT THE MODULES
Interfaces
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Processor-powered on-chip Real-Time Clock (RTC)
Population options available (processor speed, memory, connectors)
Wi-9C specific
features
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802.11b/g WLAN interface
WEP, WPA, and WPA2/802.11i security standard
Single or dual-diversity antenna options
Memory
Memory clocks
The module’s standard memory configuration is 4 MB Flash and 16 MB SDRAM.
Memory clocks = 77.5 MHz
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Not available for off-DIMM use
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clk_out[0]
clk_out[1]
clk_out[2]
clk_out[3]
— Not used; turned off by code
— Connected to clk_in
— Used for one bank of two X16 SDRAMS
— Not used
Other system
clocks
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Source clock is a 29.4912 MHz crystal or spread spectrum oscillator.
USB uses a 48.000 MHz oscillator
Ethernet versions have a 25.0000 MHz crystal
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Interfaces
The ConnectCore 9C/Wi-9C module supports several system interfaces. This section
details the features of these interfaces.
Ethernet
The module provides a 10/100 Mbps Ethernet interface with optional on-board
RJ-45 connector and integrated LEDs. On modules not populated with the RJ-45
connector, the Ethernet PHY signals are available on the SO-DIMM edge connector.
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Full-duplex or half-duplex
Station, broadcast, or multicast address filtering
2 kB RX FIFO
256-byte TX FIFO with on-chip buffer descriptor ring
Separate TX and RX DMA channels
Intelligent receive-side buffer size selection
Full statistics gathering support
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ConnectCore 9C/Wi -9C Hardware Reference, Rev D 05/2010
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