PRIZM 201750 Series User's Manual And Troubleshooting Manual

MM2/Mini4 10/100 Ethernet Daughterboard

(P/N 201750-xxx)

User’s Manual

And

Troubleshooting Guide

Springfield, PA 19064

E-Mail: [e-mail] URL: www.moog.com/components

24/7 Technical Customer Support Hotline: [phone]

February 24, 2009

Revision B

Moog Components Group

Springfield Operations

750 West Sproul Road

Tel: [phone] Fax [phone]

Moog Components Group 201750-xxx MM2/Mini4 10/100 Feb 24, 2009

Ethernet Daughterboard Manual, Rev B

MANUAL REVISION HISTORY

REVISION

NUMBER

A 5/2/07 GSG ORIGINAL

B 2/24/09 IB Updated contact information to reflect

TABLE OF CONTENTS

1

MM2/MINI4 10/100 ETHERNET DAUGHTERBOARD, P/N: 201750-XXX ............................... 3

1.1 10/100 E

1.2 MM2/M

1.3 MM2/M

1.4 MM2/M

1.5 10/100 E

1.6 MM2/M

1.7 MM2/M

1.8 MM2/M

THERNET INTERFACE

INI4

INI4

INI4

THERNET INTERFACE DAUGHTERBOARD INDICATORS AND CONTROLS

INI4

INI4

INI4

DATE BY REASON FOR

REVISION

Moog Components Group

:........................................................................................................ 3

10/100 E
10/100 E
10/100 E

10/100 E
10/100 E
10/100 E

THERNET DAUGHTERBOARD REVISION HISTORY

THERNET DAUGHTERBOARD DASH

THERNET DAUGHTERBOARD OPERATION

THERNET DAUGHTERBOARD SPECIFICATIONS

THERNET DAUGHTERBOARD POWER REQUIREMENTS

THERNET DAUGHTERBOARD DIMENSIONS

(-) N

UMBER DEFINITIONS

: ........................................ 4

: .................................................... 4

:............................................. 7

: .................................................. 8

:............................ 4

: ................................. 8

...................... 4

Page 2 of 8

Moog Components Group 201750-xxx MM2/Mini4 10/100 Feb 24, 2009

Ethernet Daughterboard Manual, Rev B

1 MM2/Mini4 10/100 Ethernet Daughterboard, P/N: 201750-xxx

The Prizm MM2/Mini4 10/100 Ethernet daughterboard combines the functionality of a four­port 10/100 Ethernet switch and a high speed synchronous Ethernet to serial bridge to
provide an end-to-end Ethernet link over a fiber multiplexer. This board must be stacked
onto a MM2 or a Mini4 motherboard set.

The board contains no user-modifiable jumper selections for this board. All functions are
handled automatically.

1.1 10/100 Ethernet Interface:

The 10/100 Ethernet daughterboard automatically supports both 10 and 100Mbps Ethernet
on each of the 4 switch ports. Mixed port-to-port Ethernet rates are supported and rate
adaptation is handled automatically. The 5th port on the switch connects to the synchronous
Ethernet to serial bridge chip. This chip buffers the Ethernet packets and flows the packets
serially through the MM2/Mini4 daughterboard connector at a synchronous data rated
defined by the MM2 (16Mbps) or Mini4 (25Mbps).

The 100Mbps Ethernet data rate is approximately 4 times the daughterboard throughput
capacity of the MM2 and Mini4. Therefore there will be some degradation to the Ethernet
traffic throughput over the MM2 or Mini4. At the 10Mbps Ethernet rate there should be
little throughput degradation.

Testing by Prizm has determined the following end-to-end throughput rates:

MM2 or Mini4 Ethernet Rate Throughput

MM2 10Mbps 8Mbps

MM2 100Mbps 15Mbps
Mini4 10Mbps 20Mbps
Mini4 100Mbps 25Mbps

Ethernet throughput is typically defined as the number of bits in a ping packet divided by the
round-trip time that a ping packet takes to get from the originating PC to the target PC and
back again. As this is a round-trip measurement, the ping packet bit size is doubled for this
computation.

For example from table above:

1. Size of ping packet = 15766 bytes * 8 = 126,128 bits per packet

2. Round-trip time = 17.05 milliseconds

Throughput = Size of ping packet * 2 / Round-trip time
= (126,128 * 2) / 0.01705
= 14,795,073 bps
= 14.79Mbps

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