CP3002
Functional Description
ID 1042-9252, Rev. 2.0
Page 2 - 13
P R E L I M I N A R Y
2.11.5
Serial Ports
The CP3002 provides two serial ports, COMA (3.3V LVTTL) available either on the 8HP version
or on the rear I/O, and COMB (3.3V LVTTL) available on the rear I/O.
COMA and COMB are fully compatible with the 16C550 controller and include a complete set
of handshaking and modem control signals. The COMA and COMB ports provide maskable in-
terrupt generation. The data transfer on the COM ports is up to 115.2 kbit/s.
2.11.6
Gigabit Ethernet
The CP3002 board includes two 10Base-T/100Base-
TX/1000Base-T Ethernet ports based on two Intel®
82574L Gigabit Ethernet controllers, which are connect-
ed to the x1 PCI Express interfaces of the QM57 chipset.
The Intel® 82574L Gigabit Ethernet Controller’s archi-
tecture is optimized to deliver high performance with
the lowest power consumption. The controller's archi-
tecture includes independent transmit and receive
queues and a PCI Express interface that maximizes the
use of bursts for efficient bus usage.
The Boot-from-LAN and Wake-on-LAN features are
supported. Wake-on-LAN is available on all Ethernet interfaces. After an operating system
shutdown, a 1000Base-T Gigabit connection is automatically reduced to 100 Mbit or 10 Mbit
operation and the Ethernet controller waits to receive a broadcast or unicast packet with an ex-
plicit data pattern to assert a signal or a PME message to wake up the system. If the main pow-
er is switched off after an OS shutdown, a 5V standby supply must be provided over the J2 rear
I/O CompactPCI connector to continue powering the Wake-on-LAN relevant devices.
The Ethernet connectors are realized as RJ-45 connectors. The interfaces provide automatic
detection and switching between 10Base-T, 100Base-TX and 1000Base-T data transmission
(Auto-Negotiation). Auto-wire switching for crossed cables is also supported (Auto-MDI/X).
Note ...
The Ethernet transmission can operate effectively using a CAT5 cable with a
maximum length of 100 m.
J11A
GbE A
J11B
GbE B
1
8
1
8
Figure 2-3: Dual Gigabit Ethernet
Connector J11A/B
