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Appendix K Compaq PCI 10/100 Ethernet Adapter
Compaq Personal Computers
Original - December 2000
K-2
WOL
Conn.
TX/RX
WOL
GND
5 VDC Aux
3.3 VDC
1
2
3
4
SMB Data
SMB CS-
SMBus
Conn.
SMB Clock
NC
1
Event 1
AOL/SOS
Conn.
2
3
4
5
6
7
Event 2
Event 3
Event 4
Event 5
Event 6
MD Clock (SOS Present)
K.2 FUNCTIONAL DESCRIPTION
The Compaq PCI 10/100 NIC Adapter is based on the 3C905C Network Interface Controller
supported by firmware in flash ROM (Figure K-2). The adapter can operate in half- or full-duplex
modes and provide auto-negotiation of both mode and speed. Full-duplex operation follows the
IEEE 802.3x flow control specification. Transmit and receive FIFOs of three kilobytes each reduce
the chance of overrun while waiting for bus access. Each card includes an on-board 5/3.3 VDC
regulator circuit and WOL connector in support of Wake-On-LAN functionality.
Figure K-2. Compaq PCI 10/100 Ethernet Adapter, Block diagram
Key features of these adapters include:
♦
2-KB transmit and 2-KB receive FIFOs
♦ 32-bit DMA bus mastering
♦
PCI ver. 2.2 compliant (PME- support)
♦ 10/100BASE-T half/full duplex (IEEE 802.3)
♦ Supports both 100BASE-TX and 100BASE-T4
♦
Nway 10/100 auto-negotiation support
♦
Both APM and ACPI power management support
♦
AOL/SOS interface for Remote Sense Alert support
♦
D0-D3 power state wake event support
♦
Boot ROM with PXE and RPL support
32-Bit
PCI Bus
PCI
Connector
5/3.3
VDC
Reg.
BIOS
ROM
Speed
RJ-45
Conn.
TX/RX
Mag.
Link/
Activit
y
1
2
3
3C905C
Ethernet Controller