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| 19-4116; Rev 0; 4/08 ABRIDGED DATA SHEET 10kHz to 490kHz OFDM-Based Power Line Communication Modem General Description Features Combines the Physical Layer (PHY) and Media Access Controller (MAC) Integrated Microcontroller with 32kB PasswordProtected Flash Memory and 8kB SRAM Maximum Effective Data Rate in Normal Mode 32kbps at 10kHz to 95kHz and 100kbps at 10kHz to 490kHz Complies with CENELEC A (10kHz to 95kHz) CENELEC B (95kHz to 120kHz) CENELEC C (120kHz to 140kHz) FCC (10kHz to 490kHz) ARIB (10kHz to 450kHz) Includes Forward Error Correction (FEC) Mechanism and CRC16 Includes Fast DES Engine as the Encryption/Decryption Coprocessor and CRC32 Jammer Cancellation for FCC and ARIB User-Configured Start and End Operating Frequency Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) Channel Access Arbitration Automatic Repeat Request (ARQ) to Enhance Error Detection and Improve Data Reliability Supports SPI, I2C, and UART Interfaces Real-Time Clock (RTC) PWM Counters Built-In Test Mode Engine for Identifying Channel Conditions MAX2990 The MAX2990 power line communication (PLC) baseband modem delivers a cost-effective, reliable, halfduplex asynchronous data communication over AC power lines at speeds up to 100kbps. The MAX2990 is a highly integrated system-on-chip (SoC) that combines the physical (PHY) and media access control (MAC) layers using Maxim's 16-bit MAXQ microcontroller core. The MAX2990 utilizes OFDM modulation techniques to enable robust data communication using the same electrical network that supplies power to all other devices on the network. The MAX2990 includes the MAXQ microcontroller core. The MAXQ is a 16-bit RISC microcontroller with 32kB flash memory, 5.12kB of ROM, and 8kB SRAM, of which 4kB that can be simultaneously accessed by the MCU and the PHY. The MAX2990 is integrated with modules for serial communication (SPITM, I2C, UART) and a real-time clock (RTC) for time stamping, in addition to standard blocks such as timers, GPIO, and external interrupts. The MAX2990 transceiver is based on an orthogonal frequency division multiplexing (OFDM) technique that allows robust data transmission over poor channel conditions specifically for environments with impulsive noise. OFDM with binary phase shift key (BPSK) and forward error correcting (FEC) blocks are used because of their inherent adaptability in the presence of frequency selective channels without the use of equalizers, resilience to jammer signals, robust communications in the presence of group delay spread, and robustness to impulsive noise. The MAX2990 features jammer cancellation that removes constant sinusoidal interference signals for FCC and ARIB bands. Privacy is provided by DES encryption. The MAX2990 is available in a 64-pin LQFP package and is specified over the -40C to +85C extended temperature range. Applications Automatic Meter Reading Home Automation Heating Ventilation and Air Conditioning (HVAC) Building Automation Industrial Automation Lighting Control Sensor Control and Data Acquisition Remote Monitoring and Control Voice-Over-Powerline Security Systems/Keyless Entry Pin Configuration appears at end of data sheet. Typical Application Circuit appears at end of data sheet. SPI is a trademark of Motorola, Inc. ________________________________________________________________ Maxim Integrated Products 1 PART MAX2990ECB+ Ordering Information TEMP RANGE -40C to +85C PIN-PACKAGE 64 LQFP +Denotes a lead-free package. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. ABRIDGED DATA SHEET 10kHz to 490kHz OFDM-Based Power Line Communication Modem MAX2990 Typical Application Circuit MAX2990 PHY/MAC SDA SCL TX RX SCLK MOSI MISO I/O I2C AFE UART MAXQ AFE INTERFACE SPI ADC GPIO OFDM PLC PHY LPF/AGC DAC AFE SPI LINE DRIVER AC POWER LINE Pin Configuration 58 DGND 53 DGND 49 AGND 48 XTAL1A 47 XTAL2A 46 TCK 45 TMS 44 TDI 43 P2.0 42 P2.1 41 P2.2 40 P2.3 39 VDDIO 38 P2.4 37 P2.5 36 P2.6 35 P2.7 34 VDDC 33 DGND XTAL1S 17 XTAL2S 18 DGND 19 VDDC 20 P1.0 21 P1.1 22 P1.2 23 P1.3 24 VDDIO 25 P1.4 26 P1.5 27 P1.6 28 P1.7 29 DGND 30 PROG 31 TDO 32 56 VDDIO 50 AVDD 59 VDDC 54 VDDC 64 P3.8 63 P3.7 62 P3.6 61 P3.5 60 P3.4 57 P3.3 55 P3.2 52 P3.1 51 P3.0 + P0.0 P0.1 P0.2 P0.3 DGND VDDC 32KIN 32KOUT VDDIO 1 2 3 4 5 6 7 8 9 MAX2990 P0.4 10 P0.5 11 P0.6 12 P0.7 13 RST 14 AVDD 15 AGND 16 LQFP Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. |
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