EP7309-IB datasheet(2/51 Pages) CIRRUS

Part #	EP7309-IB

Description	High-performance, Low-power, System-on-chip with Enhanced Digital Audio Interface

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Manufacturer	CIRRUS [Cirrus Logic]

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©Copyright Cirrus Logic, Inc. 2005

DS507F1

EP7309

High-Performance, Low-Power System on Chip

FEATURES (cont)

■ Dynamically programmable clock speeds of 18, 36, 49, and

74 MHz

■ 48 KB of on-chip SRAM

■ MaverickKey™ IDs

— 32-bit unique ID can be used for SDMI compliance

— 128-bit random ID

■ LCD controller

— Interfaces directly to a single-scan panel monochrome

STN LCD

— Interfaces to a single-scan panel color STN LCD with

minimal external glue logic

■ Full JTAG boundary scan and Embedded ICE® support

■ Integrated Peripheral Interfaces

— 8/32/16-bit SRAM/FLASH/ROM Interface

— Digital Audio Interface providing glueless interface to

low-power DACs, ADCs and CODECs

— Two Synchronous Serial Interfaces (SSI1, SSI2)

— CODEC Sound Interface

—8

×8 Keypad Scanner

— 27 General Purpose Input/Output pins

— Dedicated LED flasher pin from the RTC

■ Internal Peripherals

— Two 16550 compatible UARTs

— IrDA Interface

— Two PWM Interfaces

— Real-time Clock

— Two general purpose 16-bit timers

— Interrupt Controller

— Boot ROM

■ Package

—208-Pin LQFP

—256-Ball PBGA

—204-Ball TFBGA

■ The fully static EP7309 is optimized for low power

dissipation and is fabricated on a 0.25 micron CMOS

process

OVERVIEW (cont.)

The EP7309 is designed for ultra-low-power operation. Its core

operates at only 2.5 V, while its I/O has an operation range of

2.5 V–3.3 V. The device has three basic power states:

operating, idle and standby.

MaverickKey unique hardware programmed IDs are a solution

to the growing concern over secure web content and

commerce. With Internet security playing an important role in

the delivery of digital media such as books or music,

traditional software methods are quickly becoming unreliable.

The MaverickKey unique IDs provide OEMs with a method of

utilizing specific hardware IDs such as those assigned for

SDMI (Secure Digital Music Initiative) or any other

authentication mechanism.

The EP7309 integrates an interface to enable a direct

connection to many low cost, low power, high quality audio

converters. In particular, the DAI can directly interface with

the Crystal‚ CS43L41/42/43 low-power audio DACs and the

Crystal‚ CS53L32 low-power ADC. Some of these devices

feature digital bass and treble boost, digital volume control and

compressor-limiter functions.

Simply by adding desired memory and peripherals to the

highly integrated EP7309 completes a low-power system

solution. All necessary interface logic is integrated on-chip.

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