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SIXNET IPm Designers Guide for OEMs SIXNET
IPm Designers Guide for OEMs


SIXNET
Box 767 Clifton Park NY 12065 USA Phone +1(518)877-5173 Fax +1(518)877-8346 sales@sixnetio.com
General Info: www.sixnetio.com Support Web : www.get2support.com Support Email: support@sixnetio.com

OEM_IPm_designers_guide.doc
Page 1 of 15
Publish Date: 22APR04


1.0
Detailed Design Information
This design information is intended for OEM product designers that are integrating the IPm engine into
their own product designs. Mechanical and electrical design data is provided for this purpose. Information
in these pages is not needed by system designers are using our pre-integrated IPm products.

1.1 General Description
The IPm CPU board is a compact design that includes an industrially rated PowerPC (MPC855T) and all
memory components needed to run an embedded Linux operating system and application software. Two
Flash file systems (one being optional) are provided along with 32 bit wide dynamic RAM for program
execution. Battery backed static RAM is also provided for quick access to non-volatile memory. The IPm
CPU board has a real-time clock, one 10/100 Ethernet port interface and four flexible serial port interfaces
(one of which may be configured as an additional 10 Megabit Ethernet port). In addition, a number of
features such as an I
2
C interface are provided and are detailed in this document. A data sheet for the
MPC855T PowerPC microprocessor may be found at www.motorola.com.

All connections to the IPm CPU board are made through a single 120 pin connector. The pinouts for this
connector are detailed in an upcoming section. A mechanical drawing of the IPm CPU board and interface
connector may be found in this documentation.

A separate circuit board is required to complete the IPm system. This board must provide various interface
and driver circuits for the IPm CPU board. These interface circuits are described in upcoming sections of
this document.

1.2 OEM Circuit Board Requirements
The IPM CPU board requires external circuitry to run. The OEMs external circuit board design should
include interface and driver circuits for the serial interfaces, Ethernet interface, communication LEDs (if
desired), 3.3 volt DC power, battery backup (for the clock and if used, the static RAM) and a diagnostic
port(if hardware debugging capability is required. These interface circuits are described in upcoming
sections of this document. The mechanical requirements include the inclusion of the mating 120 pin
connector and four standoffs to support and secure the corners of the IPm CPU board.

1.3 CPU Interface Connector
All interfacing to the IPm CPU board is done through a single 120 pin connector. The signals on this
connector are described in an upcoming section and listed in the accompanying table. The 120 pin
connector on the IPm CPU board is manufactured by FCI Electronics. Its part number is 61083-124000 and
is described as a BergStak Series surface mount header. Information on this connector may be found at:

www.fciconnect.com or http://12.30.8.43/fci/datasheet.asp?PN=61083124000&FAM=119

For the OEM circuit board, the recommended mating connector is also manufactured by FCI Electronics,
part number 61082-122000 and is described as a BergStak Series surface mount receptacle. Information on
this connector may be found at:

www.fciconnect.com or http://12.30.8.43/fci/datasheet.asp?PN=61082122000&FAM=119 SIXNET
IPm Designers Guide for OEMs


SIXNET
Box 767 Clifton Park NY 12065 USA Phone +1(518)877-5173 Fax +1(518)877-8346 sales@sixnetio.com
General Info: www.sixnetio.com Support Web : www.get2support.com Support Email: support@sixnetio.com

OEM_IPm_designers_guide.doc
Page 2 of 15
Publish Date: 22APR04


1.4 Interface Signal Summary
A complete listing of signals provided on the IPm interface connector may be found in the upcoming chart.
Many of the signals are connected directly to integrated circuits on the IPm CPU board. For detailed
descriptions of these signals we refer you to the manufacturers data sheets for these devices. General
descriptions of related groups of signals arranged by functionality and more detailed information will be
provided to OEM designers who license this IPm technology from SIXNET.

Pin Signal
Connected
To:
Description
1
RXCT
External Ethernet transformer
Power to receive center tap of FEC Ethernet
magnetics
2
TXCT
External Ethernet transformer
Power to transmit center tap of FEC
Ethernet magnetics
3
RXP
External Ethernet transformer
Ethernet Receive +
4
TXP
External Ethernet transformer
Ethernet Transmit +
5
RXM
External Ethernet transformer
Ethernet Receive
6
TXM
External Ethernet transformer
Ethernet Transmit
7
Gnd
External power source
Logic ground
8
Gnd
External power source
Logic ground
9 D0
MPC855T
pin #: W14
CPU data bus most significant bit
(PowerPC numbering)
10 D1
MPC855T
pin #: W12
CPU data bus (PowerPC numbering)
11 RD/WR~ MPC855T
pin #: B2
High for data bus read cycles, low for write
cycles
12 D2
MPC855T
PIN #: W11
CPU data bus (PowerPC numbering)
13 WE0~
MPC855T
PIN #: C7
Low strobe for data bus write cycles
14 D3
MPC855T
PIN #: W10
CPU data bus (PowerPC numbering)
15 BOE~
ST16C2550
UART
PIN #: 19
Buffered Output Enable-Low strobe for data
bus read cycles
16 D4
MPC855T
PIN #: W13
CPU data bus (PowerPC numbering)
17 CS7~
MPC855T
PIN #: C4
Chip Select 7- Low strobe for data bus
read/write cycles
18 D5
MPC855T
PIN #: W9
CPU data bus (PowerPC numbering)
19
Gnd
External power source
Logic ground
20 D6
MPC855T
PIN #: W7
CPU data bus (PowerPC numbering)
21 A28
MPC855T
PIN #: A10
CPU address bus A28
22 D7
MPC855T
PIN #: W6
CPU data bus least significant bit (PowerPC
numbering)
23 A29
MPC855T
PIN #: A12
CPU address bus A29
24
+3.3
External power source
3.3 volt logic power
25 A30
MPC855T
PIN #: A11
CPU address bus A30
26 A27
MPC855T
PIN #: A13
CPU address bus A27
27 A31
MPC855T
PIN #: A9
CPU address bus A31-A31 is least
significant bit (for 8 bit addressing,) SIXNET
IPm Designers Guide for OEMs


SIXNET
Box 767 Clifton Park NY 12065 USA Phone +1(518)877-5173 Fax +1(518)877-8346 sales@sixnetio.com
General Info: www.sixnetio.com Support Web : www.get2support.com Support Email: support@sixnetio.com

OEM_IPm_designers_guide.doc
Page 3 of 15
Publish Date: 22APR04


Pin Signal
Connected
To:
Description
28 A26
MPC855T
PIN #: C10
CPU address bus A26
29
Gnd
External power source
Logic ground
30
+3.3
External power source
3.3 volt logic power
31 RXD3
ST16C2550
UART
PIN #: 5
Receive data (input) serial port 3 (UART A)
32 TXD3
ST16C2550
UART
PIN #: 7
Transmit data (output) serial port 3 (UART
A)
33 RTS3~
ST16C2550
UART
PIN #: 33
RTS (output) serial port 3 (UART A)
34 CTS3~
ST16C2550
UART
PIN #: 38
CTS (input) serial port 3 (UART A)
35 DTR3~
ST16C2550
UART
PIN #: 34
DTR (output) serial port 3 (UART A)
36 RI3~
ST16C2550
UART
PIN #: 41
RI (input) serial port 3 (UART A)
37 DSR3~
ST16C2550
UART
PIN #: 39
DSR (input) serial port 3 (UART A)
38 CD3~
ST16C2550
UART
PIN #: 40
CD (input) serial port 3 (UART A)
39
RLED3
External LED and resistor to
+3.3V
Receive LED (active low) serial port 3
(UART A)
40
TLED3
External LED and resistor to
+3.3V
Transmit LED (active low) serial port 3
(UART A)
41
Gnd
External power source
Logic ground
42
+3.3
External power source
3.3 volt logic power
43 RXD4
ST16C2550
UART
PIN #: 4
Receive data (input) serial port 4 (UART B)
44 TXD4
ST16C2550
UART
PIN #: 8
Transmit data (output) serial port 4 (UART
B)
45 RTS4~
ST16C2550
UART
PIN #: 22
RTS (output) serial port 4 (UART B)
46 CTS4~
ST16C2550
UART
PIN #: 23
CTS (input) serial port 4 (UART B)
47 DTR4~
ST16C2550
UART
PIN #: 35
DTR (output) serial port 4 (UART B)
48 RI4~
ST16C2550
UART
PIN #: 21
RI (input) serial port 4 (UART B)
49 DSR4~
ST16C2550
UART
PIN #: 20
DSR (input) serial port 4 (UART B)
50 CD4~
ST16C2550
UART
PIN #: 16
CD (input) serial port 4 (UART B)
51
RLED4
LED / resistor to +3.3V
Receive LED (active low) serial port 4
(UART B)
52
TLED4
LED / resistor to +3.3V
Transmit LED (active low) serial port 4
(UART B)
53
Gnd
External power source
Logic ground
54
+3.3
External power source
3.3 volt logic power
55 RXD1
MPC855T
PIN #: J18
Receive data (input) serial port 1 (SMC1)
56 TXD1
MPC855T
PIN #: J16
Transmit data (output) serial port 1 (SMC1)
57 RTS1~
MPC855T
PIN #: N17
RTS (output) serial port 1 (SMC1)
58 CTS1~
MPC855T
PIN #: R19
CTS (input) serial port 1 (SMC1)
59 DTR1~
MPC855T
PIN #: P18
DTR (output) serial port 1 (SMC1)
60
RI1~
Internal logic
RI (input) serial port 1 (SMC1)
61
DSR1~
Internal logic
DSR (