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Features
* Highly Integrated Digital Device for DAB Receivers (Eureka 147) * Utilizes the ARM7TDMI(R) Core
- High-performance 32-bit RISC Architecture - High-density 16-bit Instruction Set - Embedded ICE (In-Circuit Emulation) Utilizes TeakDSPCoreTM - 16-bit Fixed-point Digital Signal Processing Core HDAB OFDM Channel Demodulator and Decoder - Fully Integrated, Supports all DAB Functions and Modes - Full Data Rate of 1.8 Mbit Can Be Decoded - Automatic Mode Detection (AMD) - Digital AFC (Frequency Tolerance < 0.5 Hz for Mode I) - Digital AGC with a Wide Gain Control Range - Demodulation and Decoding of up to 64 UEP/EEP Sub-channels Audio Source Decoder (ASD) and Data Decoder (DD) - On-chip De-interleaver Memory for Full 1.8 Mbit/s Decoding Data Rate - PAD Extraction - Two Independent Data Packet Mode Decoder Integrated High-density SRAM Supporting Time and Frequency De-interleaving 10 Msps High-speed Low-power Pipelined ADC - Supports Wide IF Range of 2.048 MHz to 50 MHz - Complex Bandpass Filtering - Optional SAW Filter Equalization ARM7TDMI Core User Software Extension - Audio Player MP3 Support Large Variety of Interfaces - I2S/SPDIF, SFCO, SSO, RDI, RS-232, USART - USB V1.1 Full Speed - Two USARTs - CAN 2.0A and 2.0B Master/Slave SPI Interface - Two Dedicated Peripheral Data Controller (PDC) Channels - 8- to 16-bit Programmable Data Length - Four External Slave Chip Selects Programmable Watchdog Timer Power Management Controller (PMC) - CPU and Peripherals Can Be De-activated Individually - Simple But Comfortable Gearing and Clocking Unit 32 User Programmable I/O Lines (PIO) Low-power Consumption for Portable Applications (3.3V and 1.8V) Robust LQFP128 Package, BGA121 Package Very Low External Component Count
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DAB Digital Processing Device ATR2740 Summary
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NOTE: This is a summary document. The complete document is available under NDA. For more information, please contact your local Atmel sales office.
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1. Description
The ATR2740 is a fully integrated processing unit which covers all DAB- (Eureka 147, ETS 300 401) related digital tasks like DAB OFDM demodulation and decoding, audio source decoding, data decoding, as well as time and frequency synchronization. The device consists of a high-performance 32-bit RISC ARM7TDMI core, an additional TeakDSPCore, embedded memories, an analog-to-digital converter (ADC), as well as a DAB channel demodulator and decoder IP, and two independent audio source decoder engines. A large variety of interfaces, including USB, SPI, USART and RDI, are provided. The ATR2740 baseband processor is controlled by a standard ARM7TDMI core, which is a very well-known controller. This allows the designers to work with standard tools, which results in reduced development costs and very fast time to market. The ARM7TDMI core is designed to perform the DAB receiver tasks, MMI and further user software extensions such as MP3 decoding or data decoding. The ATR2740 is manufactured using Atmel's high-density CMOS technology. By combining all functions on one SoC (System-on-Chip), including a wide range of peripheral functions on a monolithic chip, the ATR2740 provides a highly flexible and cost-effective solution for DAB applications. The advanced Atmel technology and the architecture of the ATR2740 enable maximum performance at a very low current consumption. The wide flexibility offered by the ATR2740 is due to the large variety of interfaces supported. For control functions, UART, USB, and SPI are available. As data interfaces, an SSO, SFCO, US Band RDI, as well as two audio outputs (either I2S or SPDIF), are available. Due to the high integration of the device, the external component count is as low as only two external parts; a simple crystal and a 16-MB flash memory are required to run the full DAB function. All RAM, such as interleaving or program memory, as well as the ADC are incorporated into the device. The part works perfectly together with Atmel's DAB front-end parts. The processing power available with the ATR2740 is sufficient to enable the part to decode the full DAB data rate of 1.8 Mbits. In addition, there is still unused processing power available on the ARM7TDMI controller for customer software. It is easy to run a complete MP3 player without the need to add extra hardware to the device. A complete set of tools for hardware and software, including documentation that allows easy design-in and a fast time to market, is available on request.
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Figure 1-1. Block Diagram
ATR2740
VINP VINN VCM
ADC
ADC_DATA
DAB Channel Decoder
TXRDI
SFCO
XO CAN USB IRQ0 IRQ1 IRQ3 Watchdog Data bus Address bus Control
Clock Generation
Advanced Power Management Signal Processing CORE
I2S/SPDIF I2S/SPDIF Watchdog SSO SPI
ARM7TDMI System
USART1 USART2 RESET GPIO JTAG
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2. Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Operating free air temperature range for LQFP128 Operating free air temperature range for BGA121 Storage temperature DC supply voltage DC input voltage Notes: TStg VDD18 VDD33 AVDD Symbol Min. -40 -10 -60 -0.3 -0.3 -0.3 -0.3 Max. +85 +70 +150 +1.95 +3.6 +3.6 +1.95 Unit C C C V V V V
1. The part may not survive if all maximums are applied simultaneously.
Electrostatic sensitive device. Observe precautions for handling.
3. DC Electrical Characteristics
Test conditions (if not otherwise specified): VCC = +1.8V, Tamb = +25C No. 1.1 1.2 1.3 1.4 1.5 1.11 1.12 1.14 1.15 1.16 1.17 1.18 Parameters DC supply voltage Low-level input voltage High-level input voltage Low-level output voltage High-level output voltage Crystal oscillator frequency Clock duty cycle USB DC supply voltage USB input low level USB input high level USB differential input sensitivity USB differential input common mode range Full speed VDD33 VILUSB VIHUSB VDIUSB VCMUSB 2.0 0.2 0.8 2.5 40 3 3.3 VDD18 = 1.65 to 1.95V VDD18 = 1.65 to 1.95V IOL = 1.5 mA VDD18 = 1.65V IOH = -1.5 mA VDD18 = 1.65V Test Conditions Pin Symbol VDD18 VIL VIH VOL VOH 1.2 24.576 60 3.6 0.8 Min. 1.65 -0.3 +0.7 x VDD18 Typ. 1.8 Max. 1.95 +0.3 x VDD18 VDD18 + 0.3 0.4 Unit V V V V V MHz % V V V V V Type* D D D C C D D D D D D D
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
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3. DC Electrical Characteristics (Continued)
Test conditions (if not otherwise specified): VCC = +1.8V, Tamb = +25C No. 1.19 1.20 1.21 1.22 1.23 1.24 1.25 Parameters USB output low level USB output high level Transition rise time Transition fall time USB crystal oscillator frequency USB clock duty cycle JTAG TCK frequency FTCK Full speed Full speed Test Conditions Pin Symbol VOLUSB VOHUSB TFR TFE FUSB 40 0.02 Min. 0.0 2.8 4 4 8 60 33 Typ. Max. 0.3 3.6 20 20 Unit V V ns ns MHz % MHz Type* D D D D D D D
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
4. Electrical Characteristics on ADC/IF Input
Test conditions (if not otherwise specified): VCC = +3.3V, Tamb = +25C No. 2.1 2.2 Parameters ADC DC supply voltage IF frequency range Test Conditions Pin Symbol AVDD FIF Min. 3 2.048 Typ. 3.3 Max. 3.6 50 Unit V MHz Type* D D
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
5. DC Power Consumption
Test conditions (if not otherwise specified): VCC = +1.8V, Tamb = +25C Mode DAB full Conditions Decode of all MSC's and 1 audio sub-channel Typ. 80 Max. Unit mA Core Power Consumption
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6. Ordering Information
Extended Type Number ATR2740-RQHH ATR2740-7GHG Package LQFP128 BGA121 Remarks 16 mm x 16 mm, 0.40 mm pitch, lead free 10 mm x 10 mm, 0.80 mm pitch, lead free
7. Package Information LQFP128
Package: LQFP 128 (acc. JEDEC OUTLINE No. MS-026) Dimensions in mm 160.2 140.1 12.4 128 97 0.10.05 1 96 1.6 max.
3.5
3.5
0.4 0.160.05
technical drawings according to DIN specifications
32
65
0.60.15
33 Drawing-No.: 6.543-5103.01-4 Issue: 1; 15.09.03
64
0.15-0.06
+0.05
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8. Package Information BGA121
Package: R-LFGBA 121_A Dimensions in mm n 0.08 m A1 Corner Top View 1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H J K L n 0.15 m C BA 0.32 ... 0.42 (121x)
Bottom View 11 10 9 8 7 6 5 4 3 21
A1 Corner
A B C D E F G H J K L 0.8
100.05
8
0.8
A
technical drawings according to DIN specifications
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0.15 (4x) C B 100.05 0.53 ref. C (0.26)
0.08 C Drawing-No.: 6.580-5002.01-4 0.22 ... 0.32 Issue: 1; 20.08.04 1.4 max Seating plane
0.2 C
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9. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. History * All pages and page 1: Preliminary deleted * Page 1: Broadcast radio logo deleted * Page 4-5: DC El. Char. Table: some changes * Page 5: El. Char. on ADC/IF Input Table: some changes
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(c) 2008 Atmel Corporation. All rights reserved. Atmel (R), logo and combinations thereof, and others, are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. ARM7TDMI(R) is a registered trademark of ARM Ltd. TeakDSPCoreTM is a trademark of DSP Group Inc. Other terms and product names may be trademarks of others.
4816FS-DAB-07/08

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