Ampro Corporation MightyBoard 821 manual Pin # Signal Description

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Chapter 3Hardware

Table 3-4. Serial 2 (COM2) Interface Pin/Signal Descriptions (J6)

 

Pin #

Pin #

Signal

Description

 

 

DB9

 

 

 

 

 

1

1

DCD2*

Data Carrier Detect 2 – Indicates external serial communications device is

 

 

 

 

 

detecting a carrier signal (i.e., a communication channel is currently open).

 

 

 

 

 

In direct connect environments, this input will be driven by DTR2 as part

 

 

 

 

 

of the DTR2/DSR2 handshake.

 

 

 

 

 

 

 

 

2

6

DSR2*

Data Set Ready 2 – Indicates external serial communications device is

 

 

 

 

 

powered, initialized, and ready. Used as hardware handshake with DTR2

 

 

 

 

 

for overall readiness to communicate.

 

 

 

 

 

 

 

 

3

2

RXD2

Receive Data 2 – Serial port 2 receive data in

 

 

 

 

 

 

 

 

4

7

RTS2*

Request to Send 2 – Indicates Serial port 2 is ready to transmit data. Used

 

 

 

 

 

as hardware handshake with CTS2 for low level flow control.

 

 

 

 

 

 

 

 

5

3

TXD2

Transmit Data 2 – Serial port 2 transmit data out

 

 

 

 

 

 

 

 

6

8

CTS2*

Clear to Send 2 – Indicates external serial communications device is ready

 

 

 

 

 

to receive data. Used as hardware handshake with RTS2 for low level flow

 

 

 

 

 

control.

 

 

 

 

 

 

 

 

7

4

DTR2*

Data Terminal Ready 2 – Indicates Serial port 2 is powered, initialized, and

 

 

 

 

 

ready. Used as hardware handshake with DSR2 for overall readiness to

 

 

 

 

 

communicate.

 

 

 

 

 

 

 

 

8

9

RI2*

Ring Indicator 2 – Indicates external serial communications device is

 

 

 

 

 

detecting a ring condition. Used by software to initiate operations to

 

 

 

 

 

answer and open the communications channel.

 

 

 

 

 

 

 

 

9

5

GND

Ground

 

10

NC

NC

Not connected

 

 

 

 

 

 

 

 

Note: The shaded area denotes power or ground.

Table 3-5. Serial 3 and 4 (COM3 and COM4) Interface Pin/Signal Descriptions (J15)

 

 

 

 

 

 

 

 

Pin #

Pin #

 

Signal

Description

 

 

DB9

 

 

 

 

 

1

1(COM3)

DCD3*

Data Carrier Detect 3 – Indicates external serial communications

 

 

 

 

 

 

device is detecting a carrier signal (i.e., a communication channel is

 

 

 

 

 

 

currently open). In direct connect environments, this input will be

 

 

 

 

 

 

driven by DTR3 as part of the DTR3/DSR3 handshake.

 

 

 

 

 

 

 

2

6

 

DSR3*

Data Set Ready 3 – Indicates external serial communications device is

 

 

 

 

 

 

powered, initialized, and ready. Used as hardware handshake with

 

 

 

 

 

 

DTR3 for overall readiness to communicate.

 

 

 

 

 

 

 

3

2

 

RXD3

Receive Data 3 – Serial port 3 receive data in

 

 

 

 

RX3-

RX3- – If in RS485 or RS422 mode, this pin is Receive Data 3 -.

 

 

 

 

 

 

 

4

7

 

RTS3*

Request To Send 3 – Indicates Serial port 3 is ready to transmit data.

 

 

 

 

 

 

Used as hardware handshake with CTS3 for low level flow control.

 

 

 

 

TX3+

TX3+ – If in RS485 or RS422 mode, this pin is Transmit Data 3 +.

 

 

 

 

 

 

 

5

3

 

TXD3

Transmit Data 3 – Serial port 3 transmit data out

 

 

 

 

TX3-

TX3- – If in RS485 or RS422 mode, this pin is Transmit Data 3 -.

 

 

 

 

 

 

 

MightyBoard 821

Reference Manual

19

Image 23
Contents MightyBoard Single Board Computer Reference Manual Audience Contents Appendix a References SpecificationsAbout This Manual Purpose of this ManualChapter MightyBoard Architecture Product OverviewProduct Description Board FeaturesChapter Chapter Major Components ICs Block DiagramChip Type Mfg Model Description Function U10Jack # Signal Description Connector and Header DefinitionsAdditional Components J17 J18J16 J15 J9 J6 J20 J21 J22 JP1 BT1Jumper Definitions SpecificationsPower Specifications Humidity Environmental SpecificationsThermal/Cooling Requirements Dimension Physical SpecificationsMechanical Specifications Reference Manual MightyBoard Overview HardwareDevice vs IRQ No Interrupt Channel AssignmentsMemory Map CF8-CFF Address MapBase Address Function Address hex SubsystemRS485 Serial Port Implementation Serial InterfacesPin # Signal Description Keyboard Interface Keyboard/Mouse InterfacesLegacy USB Support USB InterfacesMouse Interface USB 2.0 SupportUSBP4+ Audio InterfaceVideo Interfaces Lvds Interface Pin # Signal Description Line ChannelUtility Interface Miscellaneous External Battery BT1Temperature Monitoring User Gpio Signals J8Infrared IrDA Port Ethernet External LEDSerial Console Irrx GND Power InterfacesWatchdog Timer ATX Power Supply InterfaceOptional System Fan Power and Sleep StatesPower-On Switch Optional CPU FanSleep States Acpi Chapter Hardware Introduction Bios SetupEntering Bios Setup VGA Display Entering Bios Setup Remote AccessLogo Screen Image Requirements Logo screenMethod Contact Information Appendix a Technical SupportAppendix a