Digi NS9210 Power

34 NS9210 Processor Module Hardware Reference

Chapter 1

Master: 33.33 Mbps

Slave: 7.50 Mbps

The SPI module is made of four signals: RXD, TXD, CLK and CS#

I2C bus The I2C bus is comp letely free on the modul e - no EEPRO M and no RTC - si nce the RTC

is in the processor.

The I²C clock is max 400kHz.

I2C signals are provided on the module with 4k7 pull-up resistors.

RTC The RTC is integrated in the processor and has its own 32.768 KHz clock crystal.

When powered by VBAT, RTC unit will function until VBAT (X1.78) reaches a

threshold of 2.3 - 2.4V - then the internal unit switches off.

The battery current without +3.3V power applied is up to 40µA. The current is

used to power the RTC, 32.768kHz oscillator and 64-byte internal RAM.

When the development board ships from the factory the battery is disabled. To

enable the battery, place a jumper on the development board at J2.

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Power

Power supply The module has +3.3V and VLIO supply pins.

VLIO can be connected either to a Li-Ion battery (2.5V - 5.5V) in a mobile application,

or it can be connected directly to +3.3V. Connecting VLIO to a battery causes

efficiency to be gained without an additional voltage regulator.

Internal voltage The internal 1.8V core voltage is generated through a high-efficiency synchronous

step-down converter, which uses VLIO as input voltage. The core voltage regulator

can provide up to 600mA.

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: