EP7309 Datasheet, PDF (2/46 Pages) Cirrus Logic – HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE

EP7309
High-Performance, Low-Power System on Chip
FEATURES (cont)
I Dynamically programmable clock speeds of 18, 36, 49,
and 74 MHz
I 48 KB of on-chip SRAM
I MaverickKey^™ IDs
— 32-bit unique ID can be used for SDMI compliance
— 128-bit random ID
I 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
I Full JTAG boundary scan and Embedded ICE^
support
I 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
I Internal Peripherals
— Two 16550 compatible UARTs
— IrDA Interface
— Two PWM Interfaces
— Real-time Clock
— Two general purpose 16-bit timers
— Interrupt Controller
— Boot ROM
I Package
— 208-Pin LQFP
— 256-Ball PBGA
— 204-Ball TFBGA
I 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.
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product information de-
scribes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information contained in this
document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind (express or implied).
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Copyright 2001 Cirrus Logic (All Rights Reserved)
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