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EP7312-IR Datasheet(PDF) 1 Page - Cirrus Logic |
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EP7312-IR Datasheet(HTML) 1 Page - Cirrus Logic |
1 / 64 page ©Copyright Cirrus Logic, Inc. 2005 (All Rights Reserved) AUG ‘05 DS508F1 http://www.cirrus.com High-performance, Low-power, System-on-chip with SDRAM & Enhanced Digital Audio Interface EP7312 Data Sheet OVERVIEW BLOCK DIAGRAM FEATURES (cont.) (cont.) FEATURES ❑ ARM®720T Processor — ARM7TDMI CPU Operating at Speeds of 74 and 90 MHz — 8 kBytes of Four-way Set-associative Cache — MMU with 64-entry TLB — Thumb™ Code Support Enabled ❑ Ultra low power — 90 mW at 74 MHz Typical — 108 mW at 90 MHz Typical — <.03 mW in the Standby State ❑ Advanced Audio Decoder/decompression Capability — Supports bit streams with adaptive bit rates. — Allows for support of multiple audio decompression algorithms (MP3, WMA, AAC, Audible, etc.). LC D C ontro lle r B oot RO M M ave rickK ey TM ARM 7 T DM I CPU Co re MMU 8 K B C ach e Write B u ffe r In te rn a l D a ta B u s EPB Bu s M e m o ry C o n tro lle r SDRAM I/F SRAM I/F O n -c hip S R A M 48 K B IC E -J T A G C lo cks & Tim e rs K eyp ad & Touc h S c re e n I/F In te rrupts , PW M & G P IO Bu s B ridge (2 ) UART s w / IrD A Po w e r M a na ge m e nt Se ria l In te rface Digita l Audio In te rface A R M 720T OVERVIEW The Cirrus Logic™ EP7312 is designed for ultra-low-power portable and line-powered applications such as portable consumer entertainment devices, home and car audio juke box systems, and general purpose industrial control applications, or any device that features the added capability of digital audio compression & decompression. The core-logic functionality of the device is built around an ARM720T processor with 8 kBytes of four-way set-associative unified cache and a write buffer. Incorporated into the ARM720T is an enhanced memory management unit (MMU) which allows for support of sophisticated operating systems like Microsoft® Windows® CE and Linux®. MEMORY and STORAGE |
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