EMAC PPC-E4-3354 Manuale utente

PPC-E4-3354

ARM Cortex-A8 SOM-3354M

Based Panel PC

User Manual

REV. 1.0

EMAC, Inc.

Table of Contents

1PPC-E4-3354 Product Summary......................................................................................... 4

1.1 Features.......................................................................................................................................................4

1.2 Standard PPC Specifications.......................................................................................................................5

2PPC-E4-3354 Product Details............................................................................................. 7

2.1 Jumper Configuration & Connector Descriptions.........................................................................................7

2.2 Power Connectors........................................................................................................................................8

2.3 Ethernet........................................................................................................................................................8

2.4 Serial Ports...................................................................................................................................................8

2.5 USB Host Ports......................................................................................................................................... 10

2.6 Audio Port.................................................................................................................................................. 10

2.5 LCD Brightness Control ............................................................................................................................ 10

2.6 MicroSD Card Socket................................................................................................................................ 11

2.7 Keyboard/Mouse....................................................................................................................................... 11

2.8 Analog Inputs ............................................................................................................................................ 11

2.9 I/O Expansion............................................................................................................................................ 11

2.10 Real-Time Clock ....................................................................................................................................... 11

2.11 Serial Flash............................................................................................................................................... 12

2.12 Status LEDs and Reset............................................................................................................................. 12

2.13 CAN Port................................................................................................................................................... 12

3Software ............................................................................................................................ 13

3.1 U-Boot....................................................................................................................................................... 13

3.2 Embedded Linux ....................................................................................................................................... 13

3.2.1 Linux with Xenomai Real Time Extensions........................................................................................ 13

3.2.2 Linux Packages.................................................................................................................................. 13

3.2.3 Linux Patches .................................................................................................................................... 13

3.3 Qt Creator.................................................................................................................................................. 14

3.4 ARM EABI Cross Compiler....................................................................................................................... 14

4Appendix A: Connector Pinouts......................................................................................... 15

4.1 Ethernet 10/100 Base-T connector (JK3) ................................................................................................. 15

4.2 USB Host connector Port A & B (HDR6) .................................................................................................. 15

4.3 USB Port C OTG (JK2)............................................................................................................................. 15

4.4 Power Jack (JK1)...................................................................................................................................... 15

4.5 Power Connector (CN1)............................................................................................................................ 15

4.6 CAN Interface (CN2)................................................................................................................................. 15

4.7 LCD/Touch/Backlight (CN3)...................................................................................................................... 16

4.8 Stereo Audio Input (CN4).......................................................................................................................... 16

4.9 Stereo Audio Output (CN5)....................................................................................................................... 17

4.10 Micro SD Socket (SOK2).......................................................................................................................... 17

4.11 COM A RS-232 Serial Port (HDR4)......................................................................................................... 17

4.12 COM B RS-232 Serial Port (HDR3)......................................................................................................... 17

4.13 COM C RS-232/422/485 Serial Port (HDR2)............................................................................................ 18

4.14 COM D RS-232 Serial Port (HDR5)......................................................................................................... 18

4.15 Misc. I/O (HDR1)....................................................................................................................................... 18

5Appendix B: Jumper Settings ........................................................................................ 19

6Appendix C: Mechanical drawing with dimensions...................................................... 20

Disclaimer

EMAC Inc. does not assume any liability arising out of the application or use of any of its products or designs.

Products designed or distributed by EMAC Inc. are not intended for, or authorized to be used in, applications such

as life support systems or for any other use in which the failure of the product could potentially result in personal

injury, death or property damage.

If EMAC Inc. products are used in any of the aforementioned unintended or unauthorized applications, Purchaser

shall indemnify and hold EMAC Inc. and its employees and officers harmless against all claims, costs, damages,

expenses, and attorney fees that may directly or indirectly arise out of any claim of personal injury, death or

property damage associated with such unintended or unauthorized use, even if it is alleged that EMAC Inc. was

negligent in the design or manufacture of the product.

EMAC Inc. reserves the right to make changes to any products with the intent to improve overall quality, without

further notification.

1PPC-E4-3354 Product Summary

1.1 Features

SoM-212ES Carrier with 200 Pin SODIMM SoM Connector

Texas Instruments AM3354 ARM Cortex-A8 1Ghz processor

4GB of eMMC Flash

16 MB of Serial Flash

512MB of SDRAM

Graphic LCD & Touch Interface

Inexpensive Open-Frame Design

1x 10/100BaseT Ethernet with on-board PHY

3x RS232 ports with handshaking

1x RS232/422/485 port

2x USB 2.0 (High Speed) Host port

1x USB 2.0 (High Speed) OTG port

Battery backed Real Time Clock

1x Micro SD Flash Card Sockets

2x SPI & 1x I2C port

1x Audio Beeper

2x Timer/Counters and Pulse Width Modulation (PWM) ports

4x Channel 12-bit Analog-to-Digital converter

WQVGA LCD (480 x 272) Resolution with LED Backlight

Software Controlled Backlight On/Off & Brightness

FREE Qt Creator based IDE

Optional Power Over Ethernet (POE)

Optional I2S Audio with Line-in/out

1.2 Standard PPC Specifications

CPU: Texas Instruments AM3354 ARM Cortex-A8 processor running at 1 GHz.

Module: SOM-3354M

Carrier board: SOM-212ES

Flash: 4 GB of eMMC Flash & 16 MB SPI Flash.

RAM: 512MB of DDR3L SDRAM.

Touchscreen: 12-Bit, 4-wire analog resistive touchscreen interface.

Flash Disk: 4 GB eMMC Resident Flash

System Reset: Processor Internal Reset Management with External Reset Button provision.

RTC: Real-Time Clock Internal with battery-backed provision

Timers: 2 Timer/Counter/PWMs.

Watchdog Timer: Processor based Watchdog Timer.

Analog I/O: 8 channels total, 4 of which is shared by the resistive touchscreen.

Digital I/O: Many general purpose I/Os multiplexed with peripheral interfaces.

Power: Power Management Controller allows selectively shutting down on processor I/O functionality and

running from a slow clock.

LCD

Display Type: 4.3" TFT Color LCD

Resolution: 480 x 272 WQVGA @ 256K Colors

Dot pitch: 0.198mm x 0.198mm

Luminance: 330 (cd/m²)

Viewing Direction: 6 o'clock

Brightness: Software controlled

Backlight: White LED (10 LEDS)

Touchscreen

Type: 4 Wire Analog Resistive

Resolution: Continuous

Controller: Built-In

Driver: Linux

Transparency: 80%

Durability: Over one million touches

Ethernet interface

Ethernet MAC: Built-In

Ethernet PHY: Micrel KSZ8041NL with software PHY shutdown control

Ethernet Type: 10/100 Base-T Ethernet

Ethernet Interface: On-Board RJ-45 connector

Ethernet POE: Optional

Solid-state Flash Disk

Internal: 4GB eMMC Resident Flash

External:Standard SD Removable Flash Card interface

Mechanical and Environmental

Dimensions: 4.8 " L x 3.0" W x 1.2" H

Weight: 5.7 oz.

Power Supply Voltage: +5V DC or 8 to 35V DC.

Power Consumption: typical <~1.0A. @ 5V DC.

Operating Temperature: 0 ~ 60° C (32 ~ 140° F)

Standard Parts Inventory

PPC-E4-3354 Assembly with 4.3” Touchscreen

Molded plastic LCD mounting bracket and standoffs

SoM-3354M System on Module

Resident on-board flash disk loaded with Linux Operating System

Four Serial Port cables

2PPC-E4-3354 Product Details

2.1 Jumper Configuration & Connector Descriptions

The PPC-E4-3354 comes factory configured. In the event that jumpers need to be verified or modified this section

provides the information required, including instructions on setting jumpers and connecting peripherals, switches

and indicators. Be sure to read all the safety precautions before you begin any configuration procedure. See

Appendix A for connector pinouts and Appendix B for Jumper Settings.

Table 1: Jumpers

Label

Function

Default

JB1

Boot0 Source Selection

Position B

JB2

Boot1 Source Selection

Position A

JB3

Flash Write Protect

Position NP

JP7

COM C RS4xx RX termination

Position OPN

Table 2: Connectors

Label

Function

JK1

5Vdc Power Barrel Jack

JK2

USB OTG PortC

JK3

Ethernet

HDR1

I/O Interface

HDR2 COM C

COM 3 Serial Port

HDR3 COM B

COM 2 Serial Port

HDR4 COM A

COM 1 Serial Port

HDR5 COM D

COM 4 Serial Port

HDR6

USB Port A & B

SOK1

200 pin SOM Socket

SOK2

MicroSD Card Socket

CN1

Alternate Power Interface (5Vdc or 8 to 36Vdc)

CN2

CAN Interface

CN3

LCD &Touch Interface Cable Socket

CN4

Audio Input

CN5

Audio Output

2.2 Power Connectors

The PPC-E4-3354 provides two power connectors. CN1 is a standard four-pin type, PC floppy disk power

connector that mates with standard floppy disk drive power connectors. Using this power input provides for a

more rugged/industrial polarized locking connection. JK1 is a standard 5.5mm barrel jack with an inner diameter

of 2.1mm with a center V+ connection. This jack allows for easy connection to a 5V DC wall mount power supply

(EMAC part number PER-PWR-00032). The PPC-E4-3354’s power input uses a switching regulator and allows a

voltage input of +5V DC to 36V DC only if you are using the CN1 power connector. NOTE: If using JK1 a 5V DC

supply must be used.

To power the PPC-E4-3354 from 5V DC use either the JK1 or Pin #1 on CN1.

To power the PPC-E4-3354 from 8V to 36V DC use Pin #4 on CN1.

Alternatively the PPC-E4-3354 can be power from a Power Over Ethernet (POE) Switch

provided the SoM-212 POE option is installed.

The pinout for the CN1 power connector is as follows:

Pin Signal

1 +5V DC

2 Chassis GND

3 Chassis GND

4 +Vin DC (+8 to +36V)

Note: Do not drive both the +5V and the +Vin power inputs. Drive one or the other.

2.3 Ethernet

The PPC-E4-3354 provides 10/100 Base-T full duplex Ethernet and uses a standard RJ-45 connector. It can be

connected straight to a hub, or another computer via a crossover Ethernet cable. The Ethernet MAC is integrated

into the AM3354 ARM Cortex-A8 processor and the Micrel KSZ8041NL performs the PHY responsibilities. Activity

and Link LEDs are integrated into the RJ45 connector.

2.4 Serial Ports

The PPC-E4-3354 is equipped with three dedicated RS232 ports, all of which terminate to 10-pin header

connectors (see Table 4, 5, & 7 below) and a RS232/422/485 port (Table 6). Four 10-pin header-to-male DB9

connector cables are provided, giving easy access to these ports. Baud rate, stop bits, etc. are all programmable

for each port via software.

COM A is an RS232 compatible port with a full complement of handshaking lines allowing it to communicate with

modems and other devices requiring hardware flow control.

COM B is an RS232 port (Console Port). This port offers the RTS and CTS handshake lines.

COM C can be configured to RS232, RS422, and RS485 via four software controlled port pins (see table 3

below). To select RS232 set SoM pin 109 & 120 Low and pin 118 & 119 High (this is the default). For RS422 set

SoM pin 109 & 120 High and pin 118 & 119 Low. To select RS485, selectively set SoM pin 109 & 119 as required

while keeping pin 118 Low. The processor provides for Auto 485 by having the transmitter automatically turned on

when required, eliminating the need to manually control this line via RTS (see processor manual).

When using COM C in the RS422/485 mode, a terminating resistor (~120 Ohm) is recommended on the two far

ends of the network. JP7 moved to the TRM position will terminate the receiver with 124 ohms. For more

information on serial ports and software configuration go to:

http://wiki.emacinc.com/wiki/Example_serport212

COM D is an RS232 port. This port offers the RTS and CTS handshake lines.

Table 3

SODIMM Pin#

SoM Pin Name

Processor Pin Name(s)

Function

109

COMC_RTS

RTS2/PC9

RS422/485 Tx Enable

118

GPIO4

ISI_D3/PB23

~RS232 Shutdown

119

GPIO5

ISI_D4/PB24

~RS422/485 Rx Enable

120

GPIO6

ISI_D5/PB25

~RS232 Enable

Table 4 (COM A Pinout) (HDR4)

Pin Description for 10-

Pin Header

Pin Description for DB9

Connector

DCD

DSR

RxD

TxD

RTS

DTR

TxD

GND

CTS

DSR

DTR

RTS

CTS

GND

Table 5 (COM B Pinout) (HDR3)

Pin Description for 10-

Pin Header

Pin Description for DB9

Connector

RxD

TxD

RTS

TxD

GND

CTS

RTS

CTS

GND

Table 6 (COM C Pinout) (HDR2)

Pin Description for 10-Pin

Header

Pin Description for DB9

Connector

422/485 TX-

232 RX, 422/485 TX+

232 TX, 422/485 RX+

RTS

422/485 RX-

232 TX, 422/485 RX+

GND

CTS

422/485 RX-

RTS

CTS

GND

Table 7 (COM D Pinout) (HDR5)

Pin Description for 10-Pin

Header

Pin Description for DB9

Connector

RxD

TxD

RTS

TXD

GND

CTS

RTS

CTS

GND

2.5 USB Host Ports

The PPC-E4-3354 provides two USB 2.0, high speed host ports (PortA) and (PortB) and one USB 2.0, high speed

OTG port (PortC). USB PortA and PortB can be accessed from HDR6. PortC can be accessed from the on-board

USB connector JK2.

All of the USB ports are equipped with 500mA re-settable Polyfuses. If a USB Device tries to draw more than

500mA from the port, the fuse will open until the device is unplugged or its current requirement is reduced. There

is no software provision for shutting down power to the Ports or detecting when a port is drawing too much

current.

Note: When sizing a power supply, make sure to allow for USB Device consumption. A device can potentially

draw 500mA, therefore these devices could use a total of up to 1 amp of power.

2.6 Audio Port

The PPC-E4-3354 provides optional Audio Line Out and Line In capability through a two 4-pin 1.25mm headers

(CN4 & CN5). A special cable (included with the Audio Option) converts the signals present on the header to two

standard miniature audio jacks. The processor interfaces to the Audio CODEC through its I2S interface.

Command control of the CODEC is done using the processor’s SPI interface. The CODEC is the Cirrus CS4271,

which is a high performance 24-bit Stereo CODEC offering superior sound quality.

Both the input and output are line level. You will probably not be able to drive an unamplified speaker although

standard headphones will work. Likewise, an un-amplified microphone probably will not work as an input although

the line out of a CD player will work.

2.5 LCD Brightness Control

The PPC-E4-3354 offers LCD brightness control that can change the brightness of the LCD via software. The

LCD utilizes LED backlighting. The board provides the backlight with a constant current source of 20mA which

results in a voltage of approximately 30 volts. The processor provides a PWM (SoM Pin #85) that is used to drive

the LCD backlight. Changing the duty-cycle of the PWM directly affects the brightness of the LCD. In addition, the

backlight can be turned off by setting SoM Pin #114 low. This allows screensaver software to automatically turn

off the backlight when the unit is not being used and to automatically turn it back on when the touchscreen is

touched.

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