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EP7209 Datasheet(PDF) 1 Page - Cirrus Logic |
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EP7209 Datasheet(HTML) 1 Page - Cirrus Logic |
1 / 128 page OVERVIEW FEATURES (cont.) (cont.) Functional Block Diagram 1 Copyright © Cirrus Logic, Inc. 1999 (All Rights Reserved) P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com EP7209 s Audio decoder system-on-chip — Allows for support of multiple audio decompression algorithms — Supports MPEG 1, 2, & 2.5 layer 3 audio decoding, including ISO compliant MPEG 1 & 2 layer 3 support for all standard sample rates and bit rates — Supports bit streams with adaptive bit rates — DAI (Digital Audio Interface) providing glueless interface to low power DACs, ADCs, and Codecs s Ultra low power consumption for MP3 playback — 87 mW (typical) for 44.1 kHz samples/sec, 128 kbits/second — 50 mW for 22.05 kHz samples/sec, 64 kbits/second — <1 mW in Standby State s ARM720T processor — ARM7TDMI CPU — 8 kbytes of four-way set-associative cache — MMU with 64-entry TLB (transition look-aside buffer) — Write Buffer — Windows® CE enabled — Thumb code support enabled The EP7209 is a complete integrated system on a chip for enabling personal digital audio solutions. It is designed specifically for implementing audio processing algorithms in power sensitive applica- tions. The core-logic functionality of the device is built around an ARM720T embedded processor. The EP7209 also includes a 32-bit Y2K-compliant Real-Time Clock (RTC) and comparator. 32.768-KHZ OSCILLATOR PLL INTERRUPT CONTROLLER POWER MANAGEMENT SSI1 (ADC) LCD CONTROLLER ARM7TDMI CPU CORE 8-KBYTE CACHE MMU TIMER COUNTERS (2) CODEC ARM720T INTERNAL DATA BUS PWM 3.6864 MHZ 32.768 KHZ EINT[1:3], FIQ, MEDCHG BATOK, NEXTPWR PWRFL, BATCHG PORTS A, B, D (8-BIT) PORT E (3-BIT) KEYBD DRIVERS (0:7) BUZZER DRIVE ADCCLK, ADCIN, ADCOUT, SMPCLK, ADCCS SSICLK, SSITXFR, SSITXDA, SSIRXDA, SSIRSFR UART2 IrDA D[0:31] NPOR, RUN, RESET, WAKEUP EXPCLK, WORD, NCS[0:3], EXPRDY, WRITE A[0:27], DRA[0:12] LCD DRIVE LED AND PHOTODIODE ASYNC INTERFACE 2 GPIO INTERNAL ADDRESS BUS 13-MHZ INPUT ON-CHIP BOOT ROM ASYNC INTERFACE 1 ON-CHIP SRAM 38,400 BYTES CL-PS6700 INTFC. PB[0:1], NCS[4:5] EXPANSION CONTROL UART1 SSI2 EPB BRIDGE EPB BUS RTC FLASHING LED DRIVE ICE-JTAG TEST AND DEVELOPMENT WRITE BUFFER DAI STATE CONTROL MEMORY CONTROLLER LCD DMA DC-TO-DC DEC ‘99 DS453PP2 Ultra-Low-Power Audio Decoder System-on-Chip EP7209 |
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