Digi ConnectCore 7U Hardware Reference Manual

ConnectCore™ 7U
Hardware Reference

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Part number/version: 90000798_A
Release date: January 2007
www.digiembedded.com

©2007 Digi International Inc.
Printed in the United States of America. All rights reserved.

Digi, Digi International, the Digi logo, a Digi International Company, Jump Start Kit, ConnectCore, NET+,
NET+OS and NET+Works are trademarks or registered trademarks of Digi International, Inc. in the United
States and other countries worldwide. All other trademarks are the property of their respective owners.

Information in this document is subject to change without notice and does not represent a committment
on the part of Digi International.

Digi provides this document “as is,” without warranty of any kind, either expressed or implied, including,
but not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi may
make improvements and/or changes in this manual or in the product(s) and/or the program(s) described
in this manual at any time.

This product could include technical inaccuracies or typographical errors. Changes are made periodically
to the information herein; these changes may be incorporated in new editions of the publication.

Digi International, Inc.
11001 Bren Road East
Minnetonka, MN 55343 U.S.A.
United States: [phone]
Other locations: [phone]

www.digiembedded.com

Contents

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Chapter 1: About the Module ..............................................................1

ConnectCore 7U block diagram.........................................................1

Features and functionality.....................................................................2

Module variations................................................................................3

Interfaces.........................................................................................3

Memory.....................................................................................3

Ethernet............................ ........................................................3

Magnetics specifications.................................................................3

General purpose I/O (GPIO).............................................................4

Serial communication....................................................................4

Serial EEPROM / I2C......................................................................4

JTAG interface............................................................................4

Reset .......................................................................................5

Reset timing...............................................................................5

External peripheral bus..................................................................6

Reset configuration .............................................................................6

DIL-48 module connector.......................................................................7

Module layout .............................................................................7

Module pinout legend....................................................................7

Module pinout.............................................................................8

GPIO configuration .......................................................................9

Chapter 2:

What’s on the Development Board ......................................................... 11

Jumper 1, triple configuration jumper..................................................... 13

RS232 serial interface ........................................................................ 14

Ethernet connector, X9................. ....... ....... ........ ....... ....... ........ ....... ... 17

About the Development Board ....................................11

Features.................................................................................. 11

The development board ....................... ........ ....... ....... ........ .......... 12

Header J1................................................................................ 13

Jumpers......................................................... ......................... 13

Function.................................................................................. 14

Serial port B, X2 ........................................................................ 14

Serial port B: connector............................................................... 15

Serial port B: Off state ................................................................ 15

Serial port A, X11....................................................................... 16

iii

RJ45 pin allocation .................. ....... ........ ....... ....... ........ ....... ....... 17

JTAG............................................................................................. 18

Activating the JTAG interface ........................................................18

Debugging notes ........................................................................ 19

Standard ARM JTAG connector, X4...................................................19

JTAG booster, X3 .......................................................................19

DIL 48-pin socket, SO1........................................................................ 20

Specifications ........................................................................... 20

Socket pinout............................................................................ 20

Pushbuttons .................................................................................... 21

Reset button, S1 ........................................................................ 21

User pushbuttons, S2 and S3..........................................................21

LEDs.............................................................................................. 22

LE1 ........................................................................................ 22

LE2 ........................................................................................ 22

LE3 and LE4..............................................................................22

Peripherals .....................................................................................23

GPIO port pinout........................................................................23

Wire-wrap section, X6 ........................................................................ 24

Wire-wrap area ......................................................................... 24

42-pin header ........................................................................... 24

Signal assignments...................................................................... 25

Character display header and potentiometer.............................................26

Character display header, X8......................................................... 26

Potentiometer, P1...................................................................... 26

Display header pin configuration.....................................................27

Power jack, X1................................................................................. 28

Appendix C: Module and Development Board Specifications.29

Temperature and power specifications ....................................................29

Power consumption ........................................................................... 29

Electrical characteristics.....................................................................29

Absolute maximum ratings: Module ................................................. 30

Absolute maximum ratings: Base board.............................................30

Recommended operating conditions.................................................30

Power dissipation....................................................................... 30

DC input characteristics ...............................................................30

DC output characteristics ............................................................. 30

Output drive.............................................................................30

Mechanical specifications - Module.........................................................31

Mechanical specifications - Development board..........................................32

Index

iv ConnectCore 7U Hardware Reference, Rev A 01/2007

Using this Guide

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This guide provides information about the Digi ConnectCore 7U embedded core
module.

Conventions
used in this
guide

This table describes the typographic conventions used in this guide:

This convention Is used for

italic type Emphasis, new terms, variables, and document titles.

monospaced type

Filenames, pathnames, and code examples.

Digi information

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Related
documentation

Documentation
updates

For additional documentation, see the Documentation folder in the NET+OS Start
menu.

Digi occasionally provides documentation updates on the Web site
(www.digiembedded.com/support).

Be aware that if you see differences between the documentation you received in
your package and the documentation on the Web site, the Web site content is the
latest version.

Support To get help with a question or technical problem with this product, or to make

comments and recommendations about our products or documentation, u se the
contact information listed in this table:

For Contact information

Technical support www.digiembedded.com/suppor t

United States: [phone]
Other locations: [phone]

v

About the Module

CHAPTER 1

ConnectCore 7U
block diagram

Built on leading NetSilicon

powerful and universal embedded core processor module in a compact 48-pin DIP
(dual in-line package) form factor. The module provides the ideal core processor
platform for product designs demanding an additional level of performance,
connectivity, and development platform flexibility.

The ConnectCore 7U embedded module offers 16 MB of RAM and up to 8 MB of on­board Flash memory, an integrated 10/100 Mb Ethernet MAC/PHY, up to two
configurable UART/SPI ports, an I
for application-specific use, and an external 10-bit address/8-bit data bus interface
for added component integration flexibility.

The ConnectCore 7U module uses the NS7520 microprocessor . For information about
the NS7520, see the NS7520 Hardware Reference available through your Jump Start
kit.

This diagram shows how the NS7520 and ConnectCore 7U module work together.

®

32-bit NET+ARM technology, the ConnectCore 7U is a

2

C bus software interface, 16 shared GPIO ports

1

ABOUT THE MODULE

1

Features and functionality

48-pin
conn

+3.3V

GND
JTAG# / Address

RSTIN#

PHY

COM 1, 2

2

I

C

JTAG

PORTA, PORTC

8-bit data

Serial
EEPROM

NS7520
NET+ARM
processor

10-bit address

CS3#, CS4#, WE#, OE#

Oscillator

55.296 MHz

Flash

SDRAM control

Address bus

Data bu s

Flash control

Address bus

Data bu s

SDRAM

Features and functionality

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

 55 MHz 32-bit NS7520 NET+ARM processor
 Up to 16MB SDRAM, 32 bit wide
 Up to 8MB Flash memory, 16 bit wide
 PHY for 10/100 Base-T Ethernet connection
 Two RS232 line drivers, LVTTL level

2 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE MODULE

Module variations

. . . . .

 Serial EEPROM (8KB) for storing configuration parameters and MAC address
 External I
 Up to 16 programmable digital I/O pins (multiplexed with other functions)
 JTAG interface, multiplexed with five address lines
 8-bit external data bus and 10-bit external address bus
 Two external chip selects
 Operating temperatures of 0°C–70°C or -40°C–+85°C

2

C port (except addresses 0xA0 and 0xA1)

Module variations

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The ConnectCore 7U module is currently available in these standard variations:

 16MB SDRAM, 8MB Flash, 8 kB EEPROM, Big Endian, 55MHz, 0°C min / 70°C max
 16MB SDRAM, 2MB Flash, 8 kB EEPROM, Big Endian, 55 MHz, 0°C min / 70°C

max

 16MB SDRAM, 8MB Flash, 8 kB EEPROM, Big Endian, 55MHz, -40°C min / +85°C

max

Interfaces

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Memory The module provides 16MB of 32-bit wide SDRAM, in one SDRAM bank.

A 16-bit wide Flash device, which can provide up to 8 MB of Flash memory, is also
available. See the list of standard module configurations immediately before this
section.

Ethernet The module supports full-duplex and half-duplex modes for both 10 Mbps and 100

Mbps operations, as well as address filtering for broadcasts and multicasts. The PHY
on the module supports auto-negotiation and can drive a 100Base-Tx line or
10Base-T line.

The module provides four pins for connecting a twisted-pair RJ-45 interface using
an external transformer with a 1:1 turns ratio.

Magnetics
specifications

www.digiembedded.com 3

H1112 magnetics, 10/100 Base-T, 1:1 SMT, RM2.0, 12-pin, 0°C-70°C
Reference parts: Pulse H1278NL, Pulse H1112NL

ABOUT THE MODULE

1

Interfaces

General purpose
I/O (GPIO)

Serial
communication

The module provides two 8-bit ports (PORTA and PORTC) for digital I/O. These 16
pins are multiplexed with other functions such as serial communication, exter nal
DMA, or other, special function s. You can configure all pins individually as inputs or
outputs, with these exceptions:

 PORTC2 is hardwired for use as I2C_SDA.
 PORTC6 is hardwired for use as I2C_SCL.
 PORTC4 provides a reset output until the startup code initializes the port pin.

PORTC4 outputs a reset pulse that remains in output mode as active high until
the code sets it otherwise

Note:

You can use pins C0, C1, and C3 to generate a level-sensitive interrupt to the
ARM core’s IRQ signal.

The module implements two independent serial channels that operate in these
modes:

 UART (unive rsal asynchronous/syn chronous receive/transmitter) mode. This

mode operates at speeds up to 230 kbps, with 5 to 8 data bits; odd, even, or no
parity; and 1 or 2 stop bits.

 SPI (serial peripheral interface) mode. Use this full-duplex, synchronous 4-

wire interface to connect different peripherals to the module.

Note:

The NS7520 supports SPI master mode only.

The pins for the two serial channels are multiplexed with the 16 GPIO (general
purpose I/O) pins.

 Serial port A is on PORTA, with all eight signals available: RxD, TxD#, RTS#,

CTS#, DCD#, RI#, DSR#, and DTR#.

 Serial port B is on PORTC, with six signals available: RxD, TxD#, RTS#, CTS#,

2

DCD#, and RI#. The remaining two pins are reserved for I

C use.

The serial channel voltage level is 3.3V. For RS232 or RS485 communication, you
must use external drivers.

Serial EEPROM /

2

I

C

The module has a 8KB EEPROM with an I
configuration data, such as the MAC address for the Ethernet controller.

Two GPIO pins — PORTC2 and POR TC6 — a ct as the I

2

I

C device to these pins as long as the pins do not use address 0xA0 or 0xA1. These

2

C interface to provide storage for

2

C bus. You can connect any 3.3V

addresses are used by the 8KB EEPROM on the module.

JTAG interface The JTAG interface is used primarily for debug purposes. The five JTAG pins — TCK,

TMS, TDI, TDO, and TRST# — are multiplexed with five address lines (ADDR5 through
ADDR9) and are available on pins 2 through 6 on the module’s DIL-48.

4 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE MODULE

Interfaces

Select the JTAG signals by tying pin 30 (LEDLNK/SEL#) low. When LEDLNK/SEL# is
not tied to GND, it is used as the L EDLN K outp ut f rom the PHY an d drive s an LED on
the development board to indicate Ethernet link and activity.

For normal operation, you must not connect signal LEDLNK/SEL# to GND. If
LEDLNK/SEL# is connected to ground, debug mode can be entered accidently,
affecting normal operation.

Reset A power-on reset controller resets all components on the module, if the power

supply of the module is below 2.88V.

 The RESET# signal is output on pin 25 of the ConnectCore 7U connector, so it

can be used to reset components on your base development board at
power-on.

 The RESET# signal has open drain characteristics allowing devices on your base

development board, such as a reset switch, to reset the module.

. . . . .

Reset timing

 The RESET# signal has a pullup resistor on the ConnectCore 7U; it’s nominal

value is 5K.

 External reset sources connected to pin 25 of the module must also have open

drain characteristics. This is also true for a debugger controlling the reset
signal of the module.

 The reset controller on the module does extend an external reset signal by

(max) 560ms. This extra delay after end-of-reset must be considered when
working with a debugger.

 If your development board uses a pushbutton reset, it should not be connected

directly to pin 25. The pushbutton reset should be debounced on your base
development board, to be compatible with the module.

Reset controller specifications

Reference part: Fairchild FM1233A
Supervisor, 2.88V, 140 ms, SOT23-3, -40°C-+105°C
Bi-directional

Reset time Value

Minimum 140 ms
Typical 256 ms
Maximum 560 ms

www.digiembedded.com 5

ABOUT THE MODULE

1

Reset configuration

External
peripheral bus

The module provides an 8-bit data bus (DAT A7 through DATA0) and a 10-bit address
bus (ADDR0 through ADDR9) to connect peripherals to the module. Two individually
programmable chip selects (CS3# and CS4#), as well as an OE# (output enable)
signal and WE# (write enable) signal, allow you to connect a wide range of 8-bit
peripherals directly to the module without additional glue logic.

The signals of this bus are the unbuffered CPU signals. Only a single load can be
connected to these signals. If more than a single peripheral is connected to this b us,
external buffers are needed.

The address bus signals configure the module at end of reset. You cannot connect
extra pullups or pulldowns to the address bus.

Reset configuration

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration is done at the end of each hardware reset. The reset status of th e
NS7520 is configured by connecting pulldown resistors of ~1K0 to signals A27–A0. All
address lines have an internal weak pullup. This is the default powerup
configuration:

Signal Function Settings

A27 Endian configuration 0 Little endian configuration

1 Big endian configuration (Default)

A26 CPU bootstrap 0 CPU disabled, GEN_BUSER = 1 (1/4

speed)

1 CPU enabled, GEN_BUSER = 0 (full speed)

(Default)

A25 Bus arbiter setting 0 External system bus arbiter

1 Internal system bus arbiter (Default)

A[24:23] CSO/MMCR setting 00 8-bit SRAM, 63 wait states/b00

01 32-bit SRAM 63 wait states/b01
10 32-bit SRAM
11 16-bit SRAM, 63 wait states/b11

(Default)
A[22:20] N/A No connect
A[19:09] GEN_ID setting GEN_ID=A[19:09], Default=0x3FF
A[08:07] PLL_IS setting IS=A[8:7], Default=10
A[06:05] PLL_FS setting FS=A[6:5], Default=00
A{04:00] PLL_ND setting ND=A[4 :0], Default=0 1101

6 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE MODULE

DIL-48 module connector

. . . . .

DIL-48 module connector

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module layout The next drawings show the top and bottom of the module. The small black triangle

in the lower left corner of the top drawing and lower right corner of the bottom
drawing indicate where pin 1 is.

Top

R28 R23

R21

U9
U3

C16

R24

R29

C7

L6

Q1

C8

R13

R34

R25

R27

C33
C32

R26

R15

C31

R16R11

U11

C30

V2

C6

R38

RN7

C29

R37

R10
R19

C15

R18

U1

RN3

C22

RN6

C19

C18

R40

R39

RN2

R3
R1

R30
R32
R20
R8

C11

C21

L1

L5

Module pinout
legend

Bottom

R33

C20

C34

RN4 RN1

C10

R6
R5

C26

G1

C25L4

C9

R14

C14

C4

C23

R36

C5

R31

C24

R2

L3

C3

R22

L7

C27

C12

L2

L8

R35

U4

R12

C2

C1

Pin: Pin number on ConnectCore 7U connector
Signal: Signal name
Type: I = Input

O = Output

Drive: Output drive
U/D: U = pullup

D = pulldown
blank = neither a pullup nor a pulldown
w = weak (8.33K pullup, 10.30K pulldown)

R4

C13

U6

R9

R7

R17

RN5

U5

V3

SO1

U2

C17

C28

U7

Description: Pin description

Note:

The GPIO configurations for POR TA and PORTC values, described as GPIO in
this table, are shown in tables following this section.

www.digiembedded.com 7

Module pinout

ABOUT THE MODULE

1

DIL-48 module connector

Pin Signal Type Drive U/D Description

1 ADDR4 O 4 mA U 10 K
2ADDR5

TCK

3ADDR6

TMS

4ADDR7

TDI

5ADDR8

TDO

6ADDR9

TRST#

O
I

O
I

O
I

O
O

O
I

4 mA U 10K

U 10K

4 mA U 10K

U 10K

4 mA U 10K

U 10K

4 mA
2 mA

U 10K
U 10K

4 mA U 10K

D w

LEDLNK = open (address function)
LEDLNK = GND (JTAG function)

LEDLNK = open (address function)
LEDLNK = GND (JTAG function)

LEDLNK = open (address function)
LEDLNK = GND (JTAG function)

LEDLNK = open (address function)
LEDLNK = GND (JTAG function)

LEDLNK = open (address function)

LEDLNK = GND (JTAG function)
7PORTA0 I/O 2 mAU wGPIO
8PORTA1 I/O 2 mAU wGPIO
9PORTA2 I/O 2 mAU wGPIO
10 PORTA3 I/O 2 mA U w GPIO
11 PORTA4 I/O 2 mA U w GPIO
12 PORTA5 I/O 2 mA U w GPIO
13 PORTA6 I/O 2 mA U w GPIO
14 PORTA7 I/O 2 mA U w GPIO
15 PORTC0 I/O 2 mA U w GPIO
16 PORTC1 I/O 2 mA U w GPIO
17 I2C_SDA O 2 mA U 4K7 Hardwired — I

2

C data signal
18 PORTC3 I/O 2 mA U w GPIO
19 PORTC4 I/O 2 mA U w GPIO
20 PORTC5 I/O 2 mA U w GPIO
21 I2C_SCL I/O 2 mA U 4K7 Hardwired — I2C clock signal
22 PORTC7 I/O 2 mA U w GPIO
23 3.3V P n/a 3.3V power connection
24 GND P n/a Ground connection
25 RSTIO# I/O 5 mA U 5K Reset (bi-directional)
26 TPIP I n/a Ethernet input+
27 TPIN I n/a Ethernet input­28 TPOP O n/a Ethernet output+
29 TPON O n/a Ethernet output-

8 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE MODULE

DIL-48 module connector

Pin Signal Type Drive U/D Description

. . . . .

30 LEDLNK/SEL# O

I

31 NC I/O n/a Reserved
32 NC I/O n/a Reserved
33 DATA7 I/O 4 mA External data line D7
34 DATA6 I/O 4 mA D6
35 DATA5 I/O 4 mA D5
36 DATA4 I/O 4 mA D4
37 DATA3 I/O 4 mA D3
38 DATA2 I/O 4 mA D2
39 DATA1 I/O 4 mA D1
40 DATA0 I/O 4 mA D0
41 ADDR0 O 4 mA U 10K Address line
42 ADDR1 0 4 mA U 1K Address line
43 ADDR2 O 4 mA U 1K Address line
44 ADDR3 O 4 mA U 10K Address line

n/a Ethernet activity LED

ADDR/JTAG selection: GND=JTAG,
open=A5...A9

GPIO
configuration

45 WE# O 4 mA Write enable
46 OE# O 4 mA Output enable
47 CS3# O 4 mA Chip select 3
48 CS4# O 4 mA Chip select 4

The next table shows the configuration for PORTA an d PORTC. In the s econd Serial
column in both tables, Ser indicates the serial channel:

 PORTA configuration applies to serial port A.
 PORTC configuration applies to serial port B

GPIO Serial Other Pin I/O Serial Other

A7 TxDA 14 I/O Ser B TxD
A6 DTRA# DREQ1# 13 I/O Ser B DTR# DMA channel 3/5 req
A5 RTSA# 12 I/O Ser B RTS#
A4 RxCA /

RIA# /
OUT1A#

11 I/O Pgmbl Out /

Ser B RxCLK /
Ser B ring
signal / Ser B
SPI clock (CLK)

www.digiembedded.com 9

ABOUT THE MODULE

1

DIL-48 module connector

GPIO Serial Other Pin I/O Serial Other

A3 RxDA DACK1# 10 I/O Ser B RxD DMA channel 3/5 ack
A2 DSRA# AMUX 9 I/O Ser B DSR# DRAM addr mux
A1 CTSA# DONE1_(O) 8 I/O Ser B CTS# DMA channel 3/5

DONE_Out
A0 TxCA /

OUT2A# /
DCDA#

DONE1_(I) 7 I/O Pgmbl Out /

Ser B DCD /
Ser B SPI

DMA channel 3/5

DONE_In

Enable (SEL#) /

Ser B TxCLK
C7 TxDB 22 I/O Ser A TxD GEN interrupt out
C6 DTRB# DREQ2# 21 I/O Ser A DTR# DMA channel 4/6 req

2

I

C clock signal (SCL)
C5 RTSB# REJECT# 20 I/O Ser A RTS# CAM reject
C4 RxCB /

RIB# /
OUT1B#

RESET# 19 I/O Pgmbl Out /

Ser A RxCLK /
Ser A ring

RESET output

signal / Ser A
SPI clock (CLK)

C3* RxDB LIRQ3 /

DACK2#

C2 DSRB# LIRQ2 /

RPSF#

C1* CTSB# LIRQ1 /

DONE2_(O)

18 I/O Ser A RxD Level-sensitive IRQ /

DMA channel 4/6 ack

17 O Ser A DSR# Level-sensitive IRQ /

CAM request

2

I

C data signal (SDA)

16 I/O Ser A CTS# Level-sensitive IRQ /

DMA channel 4/6
DONE_Out

C0* TxCB /

OUT2B /

LIRQ0 /
DONE2_(I)

DCDB#

* You can use these GPIO pins to generate a level-sensitive interrupt to the ARM core’s IRQ
signal.

10 ConnectCore 7U Hardware Reference, Rev A 01/2007

15 I/O Pgmbl Out /

Ser A DCD /
Ser A SPI
enable (SEL#) /
Ser A TxCLK

Level-sensitive IRQ /
DMA channel 4/6
DONE_In

About the Development Board

CHAPTER 2

This chapter describes the components of the ConnectCore 7U development

board and explains how to configure the board to meet your requirements.

What’s on the Development Board

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features  RS232 serial interface with DB9 connector

 Ethernet interface with RJ45 connector
 LEDs for power and communication
 Two user connector pushbuttons for the application
 Manual reset switch
 Support for external character display
 JTAG interface

Important The development board in your development kit has three components that are not

used in conjunction with the ConnectCore 7U. Please ignore these components:

 X7: USB Host connector
 X10: USB Device connector
 X12: Serial port 3

11

2

The development
board

ABOUT THE DEVELOPMENT BOARD

What’s on the Development Board

Standard JTAG ARM

connector, X4

JTAG booster, X3

DIL-48 socket, SO1,
for the ConnectCore

7U module

Potentiometer, P1

Character

display

header, X8

Power jack,

X1

LED, LE1

Serial port A,

X11

Wire-wrap area and

42-pin header, X6

Serial port B ,

X2

LED, LE4

Triple

configuration

jumper 1, J1

User

pushbutton,

S2

User

pushbutton,

S3

Ethernet RJ45

connector, X9

LED, LE2

LED, LE3

Rese t button , S1

12 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE DEVELOPMENT BOARD

Jumper 1, triple configuration jumper

. . . . .

Jumper 1, triple configuration jumper

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Triple

configuration

jumper 1, J1

Header J1 J1 is a 6-pin header that holds three jumpers — JP10, JP11, and JP12. Pin 1 is in the

upper left corner of the header; Pin 6 is in the lower right corner.

Jumpers

Jumper Plugs onto Default delivery

status

JP10 Pins 1 and 2 Not set — Plugged on

pin 2 only

JP11 Pins 3 and 4 Not set — Plugged on

pin 4 only

JP12 Pins 5 and 6 Set — Plugged on pins 5

and 6

Jumper set Jumper not set

JTAG not
active

RS232 driver
enabled

LE3 and LE4
active

JTAG active

RS232 driver
disabled

LE3 and LE4
inactive

The jumpers are included with the development kit.

www.digiembedded.com 13

ABOUT THE DEVELOPMENT BOARD

2

RS232 serial interface

Function Use header J1 to enable or disable specific functionality on the development board:

 You can activate the JTAG interface by plugging JP10 on pins 1 and 2 of header

J1.

 You can force the RS232 line driver into an off state by plugging JP11 on pins 3

and 4 of header J1.

 You can disable the LEDs connected to the PORTA4 and PORTA6 pins by

removing JP12 from pins 5 and 6 of header J1.

RS232 serial interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

There are two serial ports — serial port A and serial port B— on the ConnectCore 7 U
development board. Because these ports are multiplexed with the programmab le
GPIO pins (PORTA and PORTC), only one serial port — serial port B — is
preconfigured for use. You can configure serial port A to meet your application
needs.

Serial port A,

Serial port B,

X2

Serial port B, X2 Use serial port B as a console port for communication with a host PC. The

development board comes with an RS232 driver (Maxim MAX3320) already assembled.
This driver guarantees baud rates up to 250 kbps.

X11

14 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE DEVELOPMENT BOARD

RS232 serial interface

Serial port B operates in asynchronous RS232 full-duplex mode. This port supports
only the RTS and CTS hardware control signals, and connects to the ConnectCore 7U
module’s PORTC pins.

. . . . .

Serial port B:
connector

Serial port B: Off
state

The development board serial port connect or is a DB type connector (male). Pins are
allocated on the connector as shown:

Pin Function Level Comment

1 No connect
2 RXD RS232 PORTC3 (module pin 18)
3 TXD RS232 PORTC7 (module pin 22)
4 No connect
5GND
6 No connect
7 RTS# RS232 PORTC5 (module pin 20)
8 CTS# RS232 PORTC1 (module pin 16)
9 No connect

If a serial connection is not necessary and the four PORTC pins (PORTC1, PORTC3,
PORTC5, and PORTC7) ar e for GPIO, the RS232 line driver can be forced into an off
state by plugging jumper JP11 on pins 3 and 4 of header J1. An off state means that
the on-chip power supply is shut down.

Important:

Pin A Description when inserted Factory default

3 Serial driver forced off Not inserted
4

To disable the RS232 line driver, you must plug in JP11.

= connected pins

www.digiembedded.com 15

ABOUT THE DEVELOPMENT BOARD

2

RS232 serial interface

Serial port A,
X11

Serial port A connects to the module’s PORTA pins. These pins lead to the wire-wrap
area, so you can configure the port to meet the requirements of your application.
The pins are also connected to connector X11 and are configured as shown:

Pin Function Level Comment

1 DCD# LVTTL PORTA0 (module pin 7)
2 DSR# LVTTL PORTA2 (module pin 9)
3 RXD LVTTL PORTA3 (module pin 10)
4 RTS# LVTTL PORTA5 (module pin 12)
5 TXD LVTTL PORTA7 (module PIN 14)
6 CTS# LVTTL PORTA1 (module pin 8)
7 DTR# LVTTL PORTA6 (module pin13)
8 RI# LVTTL PORTA4 (module pin 11)
9GND
10 +3.3V

Note:

A TTL-to-RS232 converter module (part number FS-276) for use with
connector X11 is available as an accessory item. For additional information,
contact your Digi sales representative or visit the Digi Web site.

16 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE DEVELOPMENT BOARD

Ethernet connector, X9

. . . . .

Ethernet connector, X9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The module provides the 10/100 Ethernet MAC controller and PHY. The
development board provides a 1:1 transformer and a RJ45 jack with an LED that
shows the link/activity status of the Ethernet line.

RJ45 pin
allocation

Ethernet RJ45

connector, X9

RJ45 connector pins are configured as shown:

Pin Function

1TD+
2TD­3RD+
4 No connect
5 No connect
6RD­7 No connect
8 No connect

www.digiembedded.com 17

ABOUT THE DEVELOPMENT BOARD

2

JTAG

JTAG

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A JTAG interface is available both for debug purposes and during application
development using the Digi JTAG Link debugger. Because the module has only 48
pins, the JTAG interface is multiplexed with address lines ADDR[5...9]. The voltage
level on pin LEDLNK/SEL# controls the multiplexing.

Standard JTAG ARM

connector, X4

JTAG booster, X3

Activating the
JTAG interface

The JTAG interface is activated when the level on LEDLNK/SEL# is below 0.7V,
which means that LEDLNK/SEL# is connected directly to GND. LEDLNK/SEL# is
connected to GND when jumper JP10 is plugged onto pins 1 and 2 of header J1.

Important:

Pin A Description when inserted Factory default

1 JTAG active Not inserted
2

To activate the JTAG interface, you must plug in JP10.

= connected pins

18 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE DEVELOPMENT BOARD

Debugging notes Debugging means that the JTAG interface is selected.

 When debugging, the Ethernet status LED (link/activity) is not available.
 When debugging, address lines ADDR[0...4] are available.
 When debugging, address lines ADDR[5...9] are not available.
 If the board is operating under normal conditions — that is, JP10 is not plugged

onto header J1 — the debugger or JTAG booster must be removed.

JTAG

. . . . .

Standard ARM
JTAG connector,
X4

The JTAG connector, X4, is a 20-pin header and can be used to connect supported
development tools such the Digi JTAG Link, EPI Majic, and others. The JTAG
connector pins are configured as shown:

Pin Functionality Pin Functionality

1V
3TRST# 4GND
5TDI 6GND
7TMS 8GND
9TCK 10GND
11 RTCK (not connected) 12 GND
13 TDO 14 GND
15 SRST# (=RSTIO#) 16 GND
17 No connect 18 GND
19 No connect 20 GND

(=3.3V) 2 3.3V

TREF

Notes:

 Because the ConnectCore 7U does not support RTCK, the corresponding pin on

the debug header is left floating.

 The debugger must be configured to have open drain characteristics as its

SRST# output. The module has a pullup resistor of 5K.

 If you want to use a debugger not provided by Digi, contact Digi technical

support (www.digiembedded.com/support) to ensure that the debugger is
supported.

JTAG booster,
X3

You can use an optional Digi JTAG booster that allows accelerated programming of
the on-board Flash. An 8-pin header, X3, is provided on the development board for
connecting the JTAG booster.

Important:

The Digi JTAG booster is not part of the standard ConnectCore 7U
development kit. For more information, contact your local Digi sales
office or distributor.

www.digiembedded.com 19

ABOUT THE DEVELOPMENT BOARD

2

DIL 48-pin socket, SO1

DIL 48-pin socket, SO1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The ConnectCore 7U module is plugged into the DIL 48-pin socket, SO1, on the
development board.

DIL-48 socket, SO1,
for the ConnectCore

7U module

Specifications Socket, THT, DIL48, 600mil, w/o center bar, Goldflash 0.1μm

Reference part: PreciDip 110-87-648-41-001-151 or PreciDip 110-81-648-41-001-151

Socket pinout For the DIL-48 socket pinout, see “Module pinout legend” on page 7.

For information about the PORTA and PORTC GPIO configurations, see “GPIO
configuration” on page 9.

20 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE DEVELOPMENT BOARD

Pushbuttons

. . . . .

Pushbuttons

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The development board has a reset button (S1) and two user pushbuttons (S2 and S3).

User

pushbutton,

S2

User

pushbutton,

S3

Rese t bu tt on, S1

Reset button, S1 You can manually reset the module using the reset button, S1, on the development

board.
The ConnectCore 7U has a bi-directional reset signal that is extended on the module

by its controller.

User
pushbuttons, S2
and S3

The S2 and S3 user pushbuttons allow you to manipulate PORTC0 and PORTC4 UART
serial functions, by transitional between open and closed positions.

 The S2 user switch button is connected to the PORTC0 pin.
 The S3 user switch button is connected to the PORTC4 pin.

Both pushbuttons have a series resistor (680

R) to avoid module damage should the

pushbutton be pressed while the associated GPIO is configured as an output.This is
especially important for GPIO C4, as this GPIO is configured as an active low reset­out by default.

www.digiembedded.com 21

ABOUT THE DEVELOPMENT BOARD

2

LEDs

LEDs

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The board has four LEDs for power and communication.

LED, LE1

LED, LE4

LED, LE2

LED, LE3

LE1 LED LE1 is a 3.3V power indicator. When the LED is red, the power is on.

LE2 LED LE2 is the status indicator for Ethernet link/activity. The LED is visible on the

upper left corner of the RJ-45 connector and, when lit, indicates that there is an
active link on the Ethernet interface. When there is receive or transmit activity, the
LED stays on for 20 milliseconds.

LE3 and LE4 LEDs LE3 and LE4 are connected to the PORTA4 (default debug) and PORTA6 pins,

respectively. These pins might be required by other peripherals in the wire-wrap
area. Yo u can disable the pins by removing jumper JP12 from header J1.

Pin A Description when inserted Factory default

5 LEDs active Inserted
6

= connected pins

22 ConnectCore 7U Hardware Reference, Rev A 01/2007

ABOUT THE DEVELOPMENT BOARD

Peripherals

. . . . .

When Jumper J12 is removed and the LEDs are not active, they are no longer
connected to +3.3V. Because the LEDs are unidirectional, they have no effect on
PORTA4 and PORTA6 when disconnected.

Peripherals

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The development board has an 8-bit d ata bus and 10-bit address bus for connecting
external peripherals. Two individually programmable chip selects (CS3# and CS4#),
as well as OE# (output enable) and WE# (write enable) signals, allow 8-bit
peripherals to be connected directly to the module without any glue logic. In
addition, there are two 8-bit GPIO ports (PORTA and PORTC) available on the
module connector pins.

GPIO port pinout This table describes the programmable GPIO pins used by the development board and

those pins/signals that are available for use by additional hardware in the wire-wrap
area (X6).

PORTA Use PORTC Use

A0 DCD1# (Free if serial port A is not

used)

A1 CTS1# (Free if serial port A is not

used)

A2 DSR1# (Free if serial port A is not

used)

A3 RXD1 (Free if serial port A is not

used)

A4 LED or RI# (Free if jumper

removed and serial port A is not
used)

A5 RTS1# (Free if serial port A is not

used)

A6 LED or DTR1# (Free if jumper is

removed and serial port A is not
used)

A7 TXD1 (Free if serial port A is not

used

C0 Pushbutton (Free if pushbutton

S2 is not used)

C1 CTS2# (Free if CTS2# is not

used)

C2 I

C3 RXD1

C4 Pushbutton (Free if pushbutton

C5 RTS2# (Free if RTS2# is not

C6 I

C7 TXD2 (Free if TXD2 is not used

2

S3 is not used)

used)

2

C (SDA)

C (SCL)

www.digiembedded.com 23

ABOUT THE DEVELOPMENT BOARD

2

Wire-wrap section, X6

Wire-wrap section, X6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The X6 section on the development board includes a 77-pin wire-wrap area and a 42­pin header.

Wire-wrap area and

42-pin header, X6

Wire-wrap area The wire-wrap area allows you to connect through-hole components for rapid

prototyping purposes.

42-pin header Y ou ca n place an optional 42-pin header (reference part: Samtec TSW-127-07-D) here.

This header connector is a through-hole signal rail that provides 1:1 access to module
signals. The size of the connector is 2x21 pins.

24 ConnectCore 7U Hardware Reference, Rev A 01/2007

Signal
assignments

ABOUT THE DEVELOPMENT BOARD

Wire-wrap section, X6

. . . . .

Pin Function Pin Function

1ADDR4 23.3V
3 ADDR5 / TCK 4 CS4#
5 ADDR6 / TMS 6 CS3#
7ADDR7 / TDI 8OE#
9ADDR8 / TDO 10WE#
11 AD DR9 / TR ST# 12 ADDR3
13 PORTA0 14 ADDR2
15 PORTA1 16 ADDR1
17 PORTA2 18 ADDR0
19 PORTA3 20 DATA0
21 PORTA4 22 DATA1
23 PORTA5 24 DATA2
25 PORTA6 26 DATA3
27 PORTA7 28 DATA4
29 PORTC0 30 DATA5
31 C TSB# (PORTC1 ) 32 DATA6
33 I2 C_SDA (PORTC 2) 34 DATA7
35 RXDB (PORTC3) 36 RSTIO#
37 PORTC4 38 TXDB (PORTC7)
39 RTSB# (PORTC5) 40 GND
41 I2C_SCL (PORTC 6) 42 GND

www.digiembedded.com 25

ABOUT THE DEVELOPMENT BOARD

2

Character display header and potentiometer

Character display header and potentiometer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Character

display

Poten tio meter, P1

header, X8

Character
display header,
X8

X8 on the development board is a 16-pin header with 0.1” (2.45 mm) spacing (display
header reference part: EDT EW20220GLY, Matrix LCD-Module 2 x 20, mating connector
reference part: Harting IDC 09 18 516 6803). Use this header to add a simple
character display module; for example, 20 characters by 4 lines or 20 characters by
two lines. The display uses either CS3# (R24 default-fitted) or CS4# (populate R18 and
remove R24).

The character display module requires a 5 VDC power supply.

Potentiometer,
P1

26 ConnectCore 7U Hardware Reference, Rev A 01/2007

P1 on the development board is a variable resistor (potentiometer); use this to adjust
the contrast (VO) of a connected character LCD.

Display header
pin configuration

ABOUT THE DEVELOPMENT BOARD

Character display header and potentiometer

. . . . .

Pin Symbol Description

1VSS GND
2 VDD +5V
3 VO LCD control adjust
4 RS Register selection

This is the same as the module’s ADDR0 pin.

5 R/W# Read / Write#

This is the same as the module’s ADDR1 pin.

6 E Enable

This is the inverted version of one of the module’s
chip select signals.

7 DATA0 This is the buffered version of the module’s DATA0

pin.

8 DATA1 This is the buffered version of the module’s DATA1

pin.

9 DATA2 This is the buffered version of the module’s DATA2

pin.

10 DATA3 This is the buffered version of the module’s DATA3

pin.

11 DATA4 This is the buffered version of the module’s DATA4

pin.

12 DATA5 This is the buffered version of the module’s DATA5

pin.

13 DATA6 This is the buffered version of the module’s DATA6

pin.

14 DATA7 This is the buffered version of the module’s DATA7

pin.
15 VLED+ LED backlight anode
16 VLED- LED backlight cathode

www.digiembedded.com 27

ABOUT THE DEVELOPMENT BOARD

2

Power jack, X1

Power jack, X1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The power jack, X1, is a connector that uses only +5V power supply.

Power jack,

X1

The power jack’s polarity is +9 to +30 VDC.

28 ConnectCore 7U Hardware Reference, Rev A 01/2007

Module and Development Board Specifications

APPENDIX A

This appendix provides ConnectCore 7U module and electrical specifications, as

well as module and development board mechanical specifications.

Temperature and power specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Characteristic Min Max Unit

Operating temperature (ambient) 0 70 °C
Industrial temperature -40 85 °C

Power consumption

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The power consumption for the ConnectCore 7U module, at 3.3V , is 90 mA minimum
and 280 mA maximum.

Electrical characteristics

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The ConnectCore 7U operates at 3.3V power

29

MODULE AND DEVELOPMENT BOARD SPECIFICATIONS

A

Electrical characteristics

Absolute
maximum
ratings: Module

Absolute
maximum
ratings: Base
board

Recommended
operating
conditions

This table defines the maximum values for t he vol tages th at th e Conn ec tCore 7 U can
withstand without being damaged.

Symbol Parameter Min Max

V

CC I/O supply voltage -0.3V 3.6V

VIN Input voltage -0.3V VCC+0.3V
VOUT Output voltage -0.3V V

base development board supply voltage:

V

CC

 Min = -0.3V
 Max = 5.5V

CC

Recommended operating conditions specify voltage and temperature ranges over
which a circuit’s correct logic function is guaranteed.

Sym Parameter Conditions Min Typ Max Unit

V

CC I/O supply voltage 3.0 3.3 3.6 V

TOP Ambient temperature:

Commercial 0 70 °C

industrial -40 85 °C

Power

The typical power dissipation of the ConnectCore 7U module is 1.3W (Fsysclk 55MHz).

dissipation

DC input

This table shows DC characteristics for inputs.

characteristics

Sym Parameter Min Max

V

DC output

IH Input high voltage 2.0V V

VIL Input low voltage VSS 0.8V

This table shows DC characteristics for outputs.

CC

characteristics

Sym Parameter Condition Min Max Unit

OL Output low voltage Outputs and bi-directional 0 0.4 V

V
VOH Output high voltage Outputs and bi-directional 2.4 V

CC

V

Output drive The output drive varies from ±2..4mA, depending on the pin; see “Module pinout” on

page 8 for individual pin assignments.

30 ConnectCore 7U Hardware Reference, Rev. A 01/2007

MODULE AND DEVELOPMENT BOARD SPECIFICATIONS

Mechanical specifications - Module

. . . . .

Mechanical specifications - Module

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The next drawing shows the modul e’s mechanical specifications. Dimensions are in
inches and [millimeters].

2.475

[62.87]

2.3
[58.42]

BOTTOM View

0.0878 [2.23]

0.728

[18.50]

0.600

[15.24]

0.064 [1.63]

Pin 1

TOP View

Pin 1

PCB board

0.05 [1.27]

0.209 [5.30]

0.335

[8.50]

Socket

48p

Base board

www.digiembedded.com 31

Socket

ConnectCore 7U

0.338

[8.60]

Components

max 0.063 [1.6]

MODULE AND DEVELOPMENT BOARD SPECIFICATIONS

A

Mechanical specifications - Development board

Mechanical specifications - Development board

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

This drawing shows the development board’s mechanical specifi cations, top view, in
inches and millimeters (in [ ] ).

3.762

[95.57]

4.512

[114.62]

1.037

[26.35]

1.937

[49.21]

2.337

[59.37]

3.20

[81.33]

4.724

[120.00]

3.937

[100.00]

3.094

[78.59]

1.20

[30.54]

0.587 [14.92]

0.319 [8.11]

0.787

[20.00]

4.087

[103.82]

3.30

[83.82]

ON

4321

2.50

[63.50]

1.775

[45.09]

J1

JP10

JP12

1.314

[33.38]

JP11

2.014

[51.16]

2.926

[74.34]

3.937

[100.00]

0.975

[24.77]

32 ConnectCore 7U Hardware Reference, Rev. A 01/2007

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Numerics

42-pin header connector, development

board 24

A

absolute maximum ratings 30

B

block diagram, module 1

C

character display header, X8 26

pin configuration 27

ConnectCore 7U

-

about 1
block diagram 1
configuration 3
definition 1
features 2
functionality 2

10

D

pin configuration 27
DIL 48-pin socket, SO1 20
Ethernet connector, X9 17
features 11
header J1 13

-

JTAG 18
JTAG booster, X3 19
JTAG connector, X4 19
jumpers 13
layout 12
LEDs 22

peripherals 23

potentiometer, P1 26
power jack, X1 28
pushbuttons 21

serial port A, X11 16
serial port B, X2 14
wire-wrap area, X6 24

DIL 48-pin socket, SO1 20
DIL-48 module connector. See module

19

LE1 (power) 22

LE2 (Ethernet link/activity) 22

LE3 and LE4 (PA4 and PA6

connections) 22

GPIO port pinout 23

reset, S1 21

user, S2 and S3 21

connector.

DC input characteristics 30
DC output characteristics 30
development board

42-pin header connector 24

-

about 11
character display header, X8 26

28

E

electrical characteristics 29-30
Ethernet connector, X9 17
Ethernet interface 3

Index-1

Index

F

features

development board 11
module 2

functionality, module 2

G

GPIO interface 4

H

header J1 13

I

interfaces

Ethernet 3
external peripheral bus 6
GPIO 4
JTAG 4
memory 3
reset 5
serial communication 4
serial EEPROM/I2C 4

J

J1 header 13
JTAG 18

JTAG booster, X3 19
JTAG connector, X4 19
JTAG interface 4
jumpers

-

19
activating the interface 18
debugging 19

function 14
J10 13
J11 13
J12 13

L

LE1, power indicator 22
LE2, Ethernet link/activity LED 22
LE3 (PA4 connection) 22
LE4 (PA6 connection) 22
LEDs 22

LE1 (power) 22
LE2 (Ethernet link/activity) 22
LE3 and LE4 (PA4 and PA6 connections) 22

M

mechanical specifications

development board 32

module 31
memory interface 3
module configurations 3

-

module connector 7

layout 7

pinout 7

10

P

P1, potentiometer 26
peripherals 23

GPIO port pinout 23
potentiometer, P1 26
power consumption 29
power dissipation 30
power jack, X1 28
power specifications 29
pushbuttons 21

reset, S1 21

user, S2 and S3 21

R

recommended operating conditions 30
reset configuration 6
reset controller 5
reset pushbutton, S1 21
reset timing 5

Index-2 ConnectCore 7U Hardware Reference, Rev A 01/2007

. . . . .

RJ45 pin allocation 17
RS232 serial interface 14

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16

S

S1, reset pushbutton 21
S2, user pushbutton 21
S3, user pushbutton 21
serial EEPROM/I2C interface 4
serial interface 4
serial port A, X11 16
serial port B X2 14
serial port B, X2

connector 15

off state 15
SO1, DIL 48-pin socket 20
specifications

DIL 48-pin socket, SO1 20

Ethernet magnetic 3
SPI mode 4

X6, wire-wrap area 24
X8, character display header 26

pin configuration 27

X9, Ethernet connector 17

T

temperature specification 29
triple configuration jumper 13

U

UART mode 4

W

wire-wrap area, X6 24

X

X1, power jack 28
X11, serial port A 16
X2, serial port B 14

connector 15

off state 15
X3, JTAG booster 19
X4, JTAG connector 19

www.digiembedded.com Index-3