Digi NS9210 - page 49

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www.digiembedded.com 49

Serial port B,

MEI interface The serial (UART) port B connector, X6, i s a DSUB9 ma le connect or. This asynchr onous

serial port is DTE and requires a null-modem cable to connect to a computer serial

port.

The serial port B MEI (Multiple Electrical Interface) interface corresponds to NS9215

UART port B. The line drivers are configured using switch S1.

Note that all pins on S1 contribute to the line driver settings for this port.

Serial port B pins are allocated as shown:

By default, Serial B signals are configured to their respective GPIO signals.

It is the responsibility of the driver to configure them properly.

Pin RS232

function RS232

default RS485

function RS485

default

1DCD# GPIO51CTS- n/a

2 RXD GPIO54 RX+ GPIO54

3 TXD GPIO58 TX+ GPIO58

4 DTR# GPIO57 RTS- n/a

5 GND GND

6 DSR# GPIO53 RX- n/a

7 RTS# GPIO56 RTS+ GPIO56

8 CTS# GPIO52 CTS+ GPIO52

9 RI# GPIO55 TX- n/a

Contents

Main Page Contents . . . . . . . Page Page Page Digi information Page About the Module T Features and functionality Module pinout Pinout legend: Type X1 pinout Page Page Page X2 pinout Page Page Page Page Page Page Page Configuration pins CPU Configuration pins Module Clock generation Boot process Chip selects SDRAM banks Multiplexed GPIO pins Page Page Page Page Page Interfaces Power About the Development Board T Page Page User interface Switches and pushbuttons Page Serial Port B MEI configuration switches, S1 Use S1 to configure the line interface for serial port B MEI: Jumpers Jumper functions Battery and Battery Holder LEDs Page Serial UART ports Page Page Page I2C interface The I/O expander is a Philips PCA9554D at I2C address 0x20 / 0x21. The pins are allocated as shown: SPI interface Pin allocation SPI connector pins are allocated as shown: Current Measurement Option JTAG interface PoE module connectors - IEEE802.3af Page Ethernet interface RJ-45 pin allocation, X19 RJ-45 connector pins are configured as shown: Peripheral (expansion) headers Page Module and test connectors X10 pinout *USB signals are reserved for future use. X11 pinout *USB signals are reserved for future use. X20 pinout X21 pinout Page Appendix A:Specifications T Environmental specifications Mechanical specifications Safety statements A Power requirements Typical module current / power measurements Typical power save module / JumpStart board current / power consumption measurements Page Layout recommendation BOTTOM View TOP View SIDE View Page Reset and edge sensitive input timing requirements t Page Appendix B:Certifications T FCC Part 15 Class B Radio Frequency Interface (RFI) (FCC 15.105) Labeling Requirements (FCC 15.19) B Modifications (FCC 15.21) Industry Canada Declaration of Conformity B International EMC Standards The NS9210 Processor Module meets the following standards: