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C2K User’s Guide
4-4
Functional Blocks
4.5 Device Bus
The C2K provides a 32-bit 133MHz asynchronous Device Bus mastered by the MV64460 System
Controller. The Device Bus services the following devices:
• FPGA
• Flash memory
4.6 SMBus
The MV64460 System Controller includes a SMBus Host Controller to master an on-board serial
interface. The SMBus hosts the following slave devices:
• Temperature Sensor
• Board Configuration EEPROM
• User Configuration EEPROM
• RTC
4.7 Gigabit Ethernet
The C2K provides three 10/100/1000Base-T Ethernet ports to the backplane: ETH0 and ETH1 to
cPCI_J3 and ETH2 to cPCI_J4. The MV64460 System Controller provides three Ethernet Media
Access Controllers (MACs). The VSC8244 PHY provides the physical interfaces.
The C2K provides nine on-board LEDs to monitor link activity and data transfer speeds for the
three Ethernet ports as described in Table 4-1.
Table 4-1
Gigabit Ethernet on-board indicator LEDs.
LED
Description
LED Indication
D1
ETH0 Link/Activity
Link/Activity:
Indicates a valid link has
been establish, blinking indi-
cates data transfer activity.
D2
ETH0 10/100T Link speed
D3
ETH0 1000T Link speed
D4
ETH1 Link/Activity
10/100T Link speed:
Indicates data transfers
rates of 10Mb/s or 100Mb/s.
D5
ETH1 10/100T Link speed
D6
ETH1 1000T Link speed
1000T Link speed:
Indicates data transfers of
1000Mb/s.
D7
ETH2 Link/Activity
D8
ETH2 10/100T Link speed
D9
ETH2 1000T Link speed
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