322x-Low Power Board (1322x-LPB) Reference Manual Document Number: 1322xLPBRM Rev. 1.
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Contents About This Book Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Chapter 1 Safety Information 1.1 1.2 1.2.1 1.
3.8.3 3.8.4 3.8.5 3.8.6 ARM JTAG Debug Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GPIO Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UART Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jumper Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About This Book This manual describes Freescale’s 1322x-LPB evaluation board. The 1322x-LPB contains a Freescale third-generation, low power, 2.4 GHz radio frequency transceiver, with 32-bit ARM7 core based MCU, hardware acceleration for both the IEEE Standard 802.15.4 MAC and AES security, and a full set of MCU peripherals into a 99-pin LGA Platform-in-Package (PiP). Audience This manual is intended for system designers. Organization This document is organized into 4 chapters.
Definitions, Acronyms, and Abbreviations The following list defines the acronyms and abbreviations used in this document. ADC Analog to Digital Converter AES Advanced Encryption Standard ARM Advanced RISC Machine CTS Clear to Send DAC Digital to Analog Converter DMA Direct Memory Access I2C Inter-Integrated Circuit is a multi-master serial computer bus ISM Industrial Scientific Medical 2.
Chapter 1 Safety Information 1.1 FCC Guidelines This equipment is for use by developers for evaluation purposes only and must not be incorporated into any other device or system. This device may not be sold to the general public. Integrators will be responsible for reevaluating the end product (including the transmitter) and obtaining a separate FCC authorization. FCC approval of this device only covers the original configuration of this device as supplied.
Safety Information 1.2.2 47 C.F.R. Sec.15.105(b) This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. The antenna(s) used for this equipment must be installed to provide a separation distance of at least 8 inches (20cm) from all persons. This device complies with Part 15 of the FCC Rules. Operation is subject to the following three conditions: 1. This device may not cause harmful interference. 2.
Chapter 2 1322x-LPB Module Overview and Description 2.1 Introduction The 1322x-LPB is an IEEE 802.15.4 compliant wireless node based on the Freescale MC1322x device. The heart of the MC1322x USB module is Freescale’s MC1322x 99-pin LGA Platform-in-Package (PiP) solution that can be used for wireless applications ranging from simple proprietary point-to-point connectivity to complete ZigBee mesh networking.
1322x-LPB Module Overview and Description 2.2 Features The 1322x-LPB provides the following features: • Full IEEE 802.15.4 compliant wireless node; ZigBee capable with Freescale’s BeeStack software stack • Based on Freescale’s third-generation MC1322x ZigBee platform which incorporates a complete, low power, 2.4 GHz radio frequency transceiver, 32-bit ARM7 core based MCU, hardware acceleration for both the IEEE 802.15.
1322x-LPB Module Overview and Description 2.3 Board Level Specifications Table 2-1. 1322x-LPB Specifications Parameter Units MIN TYP Notes/Conditions MAX General Size (Enclosure: X, Y, Z) Size (PCB: X, Y) Layer build (PCB) 74x56x37 mm 65x45 mm 0.8 / 0.032 mm / in Dielectric material (PCB) 2-Layer FR4 Power Voltage supply (DC) 4.4 5 12 V Voltage supply (Batteries) 2.0 3 3.
1322x-LPB Module Overview and Description Table 2-1. 1322x-LPB Specifications (continued) Parameter Units Notes/Conditions CE (ETSI) Product complies accordingly to the EN 300 328 V1.7.1 (2006-10) standard CE (EMC) Product complies accordingly to the EN 301 489-1 V1.6.1 (2005-09) and EN 301 489-17 V1.2.
Chapter 3 System Overview and Functional Block Descriptions This section provides an overview of the 1322x-LPB and its block diagram. 3.1 System Block Diagram The following is the 1322x-LPB system level block diagram. SW_VCC JTAG Debug KBI DC Adaptor 2xAAA Battery Power Management VCC Lithium Coin Cell PCB F-Antenna 12-Pin GPIO HDR GPIO MC13224V/225V Advanced ZigBee™- Compliant PiP 2 Pushbuttons 6-Pin UART HDR UART1 2 LEDs PLL Filter 24 MHz 32.768 KHz Figure 3-1.
System Overview and Functional Block Descriptions The MC1322x MCU resources offer superior processing power for ZigBee and IEEE 802.15.4 applications. A full 32-bit ARM7TDMI-S core operates up to 26 MHz. A 128 Kbyte FLASH memory is mirrored into a 96 Kbyte RAM for upper stack and applications software. In addition, an 80 Kbyte ROM is available for boot software, peripheral device drivers, standardized IEEE 802.15.4 MAC and communications stack software.
System Overview and Functional Block Descriptions 3.2.1 1322x-LPB Form Factor The MC1322x allows for very small footprint applications. The 1322x-LPB circuit board illustrates a small footprint for the MC1322x/RF area and use of a 2 metal layer design. This board can be used as a template for a 2-layer PCB design (design files are available), or additional reference designs are available through the Freescale web site.
System Overview and Functional Block Descriptions 3.3 RF 2.4 GHz ISM Band radio design The MC1322x transceiver includes a low noise amplifier, 1mW nominal output power, PA with internal voltage controlled oscillator (VCO), integrated transmit/receive switch, on-board power supply regulation, and full spread-spectrum encoding and decoding. The 1322x-LPB requires only a minimum amount of external components and a chip-antenna for a complete solution. Figure 3-5 shows the RF network external to the MC1322x.
System Overview and Functional Block Descriptions 3.4.2 Battery Sources The battery source can be either a AAA battery pack (2 cells) or an optional Lithium coin cell: • AAA source - as supplied, the 1322x-LPB has a 2-cell AAA battery holder mounted. The typical usable voltage range for 2 AAA cells is ~3.1V down to 2.2 - 2.0V. Note that a Schottky diode and a switch MOSFET are in series with the battery pack, and these will impact the lowest usable voltage for the battery pack.
System Overview and Functional Block Descriptions Socket Pads C59 and C60 Pads Figure 3-6. 1322x-LPB PCB Bottom View 3.4.3 Optional Use of MC1322x Buck Regulator The MC1322x is typically used in a single source, unregulated VCC configuration (VBATT connected in parallel with LREG_BK_FB), and the 1322x-LPB is supplied in this connection. However, the MC1322x also has an optional buck switched regulator, and the 1322x-LPB supports use of the buck function.
System Overview and Functional Block Descriptions 3.5 Clock Sources The 1322x-LPB supports two primary clock sources for the MC1322x. 3.5.1 Reference Oscillator (24 MHz nominal) The reference oscillator is the primary source for all internal MC1322x clocks. Figure 3-8 shows the LPB circuitry related to the reference oscillator. The default frequency for the reference oscillator is 24 MHz and the mounted crystal X1 is a 24 MHz device that meets MC1322x specifications.
System Overview and Functional Block Descriptions 3.5.2 32.768 kHz Crystal Oscillator Provision is also made for the secondary 32.768 kHz oscillator crystal X2. This oscillator can be used on the MC1322x for a low power accurate RTC timebase and wake-up state machine. The module comes with this crystal and its load capacitors C7 and C12 mounted. Although use of the oscillator is optional, the module is provided ready for use. See Figure 3-9. TP10 XTAL_32_OUT X2 32.
System Overview and Functional Block Descriptions 3. Turn off power and remove the jumper shorts as required. 4. The board is now ready for boot operation. After the FLASH is erased, the module can be loaded with a new image through the UART1 port using Test Tool. Refer to the Test Tool User’s Guide as supplied with Test Tool in the BeeKit download.
System Overview and Functional Block Descriptions • • SW_VCC is provided on the J2 GPIO Pin Header SW_VCC also powers U17 the voltage reference for ADC operation. TP47 VCC TP29 R68 TP32 MAIN SUPPLY 0R C56 4.7uF SW_VCC Q2 FDV302 KBI_3 Figure 3-11. Switched VCC for Peripheral Devices 3.7.2 Measuring Current The 1322x-LPB provides three primary points for current measurement: • Total current to the board - reference Figure 3-11. R68 can be removed and current can be measured between TP29 and TP47.
System Overview and Functional Block Descriptions 3.8 User Interfaces This section provides a summary of the user interfaces. 3.8.1 LEDs, Switches, and Reset For application interface the 1322x-LPB provides: • Two red LEDs (D1 and D2)are driven by the MCU and controlled by the software application. • Two pushbuttons (SW1 and SW2) are connected to the MCU GPIO for software application. Only SW1 has interrupt generation capability, and can be used as an input for low power wake-up.
System Overview and Functional Block Descriptions 3.8.3 ARM JTAG Debug Interface Connector The MC1322x supports connection to a subset of the defined ARM JTAG connector. The JTAG interface is a standard 2.54mm/0.1inch spacing, 20-pin debug interface (J1). The 20-pin connector is clearly separated from the GPIO and UART pin headers and located at the rear side of the module. The 20-pin connector is designated “JTAG” on the silk-screen and has Pin 1 designated for correct plug-in of the development cable.
System Overview and Functional Block Descriptions Table 3-2. GPIO Connector J2 Pinouts (continued) 4 I2C_SCL I2C Bus clock / GPIO12 I2C bus signal SCL. Pull-up to SW_VCC available 5 TMR3 Timer 3 IO signal / GPIO11 Pin can be used as Counter 3 output or counter input clock. 6 TMR1 Timer 1 IO signal / GPIO9 Pin can be used as Counter 1 output or counter input clock. 7 ADC3 ADC analog input Channel 3/ GPIO33 ADC sample channel can be used by either ADC1 or ADC2.
System Overview and Functional Block Descriptions 3.8.6 Jumper Selection Table 3-4 lists all the possible jumper selections for the 1322x-LPB. The jumpers available on the board are: • J16 - used to measure MC1322x current • J17 - used to reset MC1322x • J18 - used to enable 1.5V reference • J19, J20 - used to recover/clear FLASH. See Table 3-4. Table 3-4. LPB Jumper Selection Pin Header Pin Number Connection Description Default Setting J16 1-2 Connect to ammeter to measure MC1322x current.
Freescale Semiconductor A B C DJ-005 J4 UART1_RX UART1_CTS UART2_RX I2C_SDA TMR3 ADC3 SWITCH1 1 3 2 7 R6 390R 2 4 6 8 10 12 90122-6 1 3 5 J3 D6 2 VCC TP26 2 4 6 2 4 6 8 10 12 2468 - BC1 + 5 1 R69 10K C53 1uF R11 220R 1 2 3 4 SWITCH2 SWITCH1 D5 LGR971 POWER 2 4 1 3 R70 100K 8 7 6 5 8 7 6 5 3 4 2 1 C59 100uF Not Mounted 6 5 4 C55 4.
Schematic, Board Layout, and Bill of Materials Figure 4-2. 1322x-LPB PCB Component Location (Top View) Figure 4-3. 1322x-LPB PCB Test Points (Bottom View) 1322x-LPB Reference Manual, Rev. 1.
Schematic, Board Layout, and Bill of Materials Figure 4-4. 1322x-LPB PCB Layout (Top View) Figure 4-5. 1322x-LPB PCB Layout (Bottom View) 1322x-LPB Reference Manual, Rev. 1.
Schematic, Board Layout, and Bill of Materials Table 4-1.
Schematic, Board Layout, and Bill of Materials Table 4-1. Bill of Materials (continued) 1 J1 Dual Row Right Angle 90122-20 pin header 0.38um gold Molex 90122-0770 1 J2 Dual Row Right Angle 90122-12 pin header 0.38um gold Molex 90122-0766 1 J3 Dual Row Right Angle 90122-6 pin header 0.
Schematic, Board Layout, and Bill of Materials Table 4-1. Bill of Materials (continued) 0 R72,R73 Fixed resistor RC31 1K 50V 0.063 W 2% Philips 2322 705 50102 0 R106,R107 Fixed resistor RC31 4.7K 50V 0.063 W 2% Philips 2322 705 50472 1 R120 RES MF 120K 1/16W 120K 1% 0402 1/16W 1% KOA SPEER RK73H1ETTP1 203F 1 R121 RES MF 24.9K 1/16W 24.9K 1% 0402 1/16W 1% KOA SPEER RK73H1ETTP2 492F 2 SW1,SW2 SMD Tact Switch 2.6N DTSM63N (7.
