Mesa 4I71 User manual

4I71 MANUAL
PC104-PLUS 8 PORT 100BT MAC-SWITCH
V1.1

iii
Table of Contents
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
HARDWARE CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PC104-PLUS SLOT SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ETHERNET ADDRESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PORTS....................................................... 2
CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONNECTOR AND DEFAULT JUMPER LOCATIONS . . . . . . . . . . . . . . . . . . 4
ETHERNET RJ 45 CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LED STATUS INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DRIVERS ..................................................... 6
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4I71 1
GENERAL
DESCRIPTION
The 4I71 is a stackable PC/104-plus card that combines a dual port 100BaseT
Ethernet MAC with a 8 port switch. The 4I71 makes it easy toconnect multiple embedded
system cards without the awkward power or mechanical problems with consumer type
Ethernet switches.
The 8Ethernet ports support autonegotiation allowing connections with half and full
duplex, 10 and 100 BaseT devices plus Auto-MDIX, eliminating the need for crossover
cables.
The Ethernet MAC is a Micrel KS8842P which has drivers available for most
operating systems. The switch has sufficient bandwidth to support full duplex wire speed
connections on all ports.

4I71 2
HARDWARE CONFIGURATION
GENERAL
Hardwaresetupjumperpositionsassumethatthe4I71cardisorientedinanupright
position, that is, with the PC/104 connectors towards the person doing the configuration,
and the on card writing right-side-up.
PC104-PLUS SLOT NUMBER
The4I71cardmustbeassignedaslotnumberbeforeuse.IndesktopPCIsystems,
the slot number is determined by the physical slot that the PCI card is inserted into. In
PC104-PLUS systems, all signals on the bus are the same for each card, so a method is
needed to differentiate each card. This is done with the slot number jumpers on the 4I71
card. 2 jumpers. W2 and W3 determine the 4I71 slot assignment. The following table
shown the jumper settings:
W2 W3 SLOT IRQ REQ/GNT NOTES
DOWN DOWN 0 A 0 DEFAULT
DOWN UP 1 B 1
UP DOWN 2 C 2
UP UP 3 D 3
MDIX ENABLE/DISABLE
The 8Ethernet ports of the 4I71support Auto MDI-X. When Auto MDI-Xisenabled,
each Ethernet port automatically detects whether a crossover connection is required and
switches the ports transmit and receive pairs as needed. Sometimes this auto-switching
can interfere with proper operation of other connected hubs or switches so it can be
disabled. W4 controls the MDIX feature. When W4 is in the right hand position (default),
Auto MDI-X is enabled. When W4 is in the left hand position, Auto MDI-X is disabled.
ETHERNET ADDRESS
The hexadecimal MAC address is printed on alabel on thefront edgeof the PC/104
connector of the 4I71 card.
PORTS
Seven of the 8 Ethernet ports on the 4I71 connect to the 8 port switch, Port 1
connects to the KSZ8842's , while Ports 2 through 8 connect to switch ports 2 through 8.

4I71 3
RJ45 PORT 1
KSZ8842
KSZ8842
KS8997
P1
P2
P3
P4
P5
P6
P7
P8
KSZ8842 PCI
INTERFACE
PORT 1
PORT2
SWITCH
RJ45 PORT 8
RJ45 PORT 7
RJ45 PORT 6
RJ45 PORT 5
RJ45 PORT 4
RJ45 PORT 3
RJ45 PORT 2
CONNECTORS
BLOCK DIAGRAM OF CONNECTIONS

4I71 4
CONNECTORS
CONNECTOR LOCATIONS AND DEFAULT JUMPER POSITIONS

4I71 5
CONNECTORS
ETHERNET CONNECTOR
J2 through J9 are the RJ-45 Ethernet connectors.Note that the Auto MDI-Xfeature
canswapthetransmitandreceivepairsifareversedconnectionis detected.Standardpin-
out is as follows:
PIN FUNCTION
1 XMIT+
2 XMIT-
3 RCV+
6 RCV-
LED STATUS INDICATORS
Status LEDS are provided behindeachRJ45connector. LED function is as follows:
GREEN LINK OK/ACTIVITY
YELLOW FULL DUPLEX/COLLISION
RED HIGH SPEED (100BaseT)

4I71 6
OPERATION
SWITCH
The 4I71 is basically a dual port Ethernet interface and a 8 port switch on a single
card. The Ethernet MAC connects to a built in 2 port switch on one of the 8 switch ports,
leaving 7 switch ports and one of the original 2 ports of the Ethernet chip available. Since
theEthernetMAChasalocalEthernetinterfacetoits switchport,system softwarewillonly
see a standard Ethernet interface, so normal KSZ8842 drivers can be used.
DRIVERS
The Distribution disk supplied with the 4I71 has drivers for Windows XP, and Linux
In addition the DP83815 chip used on the 4I71 is supported by FreeBSD, NetBSD,
OpenBSD, and QNX.

4I71 7
SPECIFICATIONS
MIN MAX
POWER SUPPLY 4.5V 5.5V
POWER CONSUMPTION:
ALL CHANNELS ACTIVE 100BT ---- 600 mA
ALL CHANNELS ACTIVE 10BT ---- 800 mA
IDLE ---- 450 mA
OPERATING TEMP. 0oC +70oC
OPERATING TEMP. (-I version) -40oC +85oC
OPERATION HUMIDITY 0 95% NON-CONDENSING