ES4428/ES4427
Web/DVD Set-Top Box Solution
Product Brief
DESCRIPTION
ES4428 FEATURES
The ES4428/ES4427 Web/DVD Internet set-top box chipset
seamlessly combines both Web browser technology and DVD
technology into a highly integrated, low-cost solution for the next
generation of Internet set-top boxes for home use.
• On-chip hardware interface with V.90 data/fax/voice modem
subsystem implemented
• 640 x 480 NTSC and 640 x 576 PAL television video formats
supported
The ES4428, which is based on ESS’s Programmable
Multimedia Processor (PMP) device architecture, includes a
programmable internal RISC processor core that makes it
adaptable for use in embedded systems applications such as
set-top boxes. The ES4427 companion chip supplies proper
video sync capabilities and performs NTSC- and PAL-based
video encoding and decoding as necessary to provide broadcast
quality video to the television screen.
• Configurable for browser/DVD applications
• Hardware support for infrared remote control and/or wireless
keyboard
• On-chip MPEG audio/video decoder and system parser
• On-chip on-screen display (OSD) controller supports 4-bit
blending.
• On-chip subpicture unit (SPU) decoder supports karaoke lyric,
subtitle and closed captioning functions.
The ES4428 DVD processor integrates MPEG-based audio and
video data stream decoding for DVD/VCD/SuperVCD playback,
DVD system navigation and Dolby AC-3 decoding into a single
device. The ES4428 demuxes the incoming DVD audio and
video data streams from the DVD loader using its glueless 8/16-
bit parallel interface, which is hardware-compatible with many
DVD loaders. The ES4428 also supports both 8- and 16-bit
Flash/Read-Only Memory (ROM) and 8- and 16-bit Synchronous
DRAM (SDRAM) memory I/O operations.
• VideoCD 1.1 and 2.0, Interactive 3.0, Super VCD and Audio CD
compatibility available with Video CD / Super VCD player
configuration
• VideoCD 1.1 and 2.0, Interactive 3.0, Super VCD, Audio CD
and MP3 compatibility available with Super VCD / DVD player
configuration
• DTS audio decoding supported
• Programmable multimedia processor architecture
• ISO/IEC 13818-2 MPEG-2 compliant
• ISO/IEC 11172 MPEG-1 compliant
The ES4428 controls data I/O transactions to and from the
ES4427 companion chip through its 8-bit Device Serial Connect
(DSC) parallel bus interface. The ES4428 also provides a 16-bit
wide hardware interface with V.90-compatible modem
subsystems incorporated into the set-top box design.
ES4427 FEATURES
• 8-bit DSC parallel bus interface generates edge-triggered
interupts for data read/write interfacing with ES4428
The ES4427 incorporates a multi-standard TV encoder that
supports both the NTSC and PAL formats and CCIR-601 non-
square operations. Two microphone ADCs and PLL clock
synthesizers are incorporated in the ES4427 device architecture.
The ES4427 includes an I/O-mapped auxiliary expansion port
that interfaces with the ES4428. Four pins of the port can be
configured as edge-triggered interrupts, supporting critical
functions, such as handling remote control and modem interrupt
requests, DVD/VCD loader resets and modem board resets.
• Dual microphone and vocal assist hardware support provided
• PLL clock synthesizer based on 27 MHz crystal input generates
required clocks for video encoder, video DACs and video
processor
SOFTWARE SUPPORT
• Software stack support for the POP3, SMTP and SNMP Internet
e-mail protocols defined by RFC 821, RFC 1157and RFC 2449
• Software stack support provided for the HTTP Web browsing
protocol defined by RFC 1945, RFC 2068 and RFC 2616
• Software stack support provided for the TCP/IP Internet
protocols defined by RFC 791 and RFC 793
Command and register accesses are issued through the
DSC interface from the ES4428 DVD processor to the
ES4427 through the device serial communication (DSC)
interface for accessing the internal registers of the
ES4427. The DSC interface port is comprised of three
interface signals, the strobe (DSC_S), data (DSC_D), and
clock (DSC_C).
• Software stack support provided for RTP payload format for
MPEG-1/2 and H.261 video streaming protocols defined by
RFC 2032, RFC 2038 and RFC 2250
The DSC port is selected when the DSC strobe goes high
and latches the data at the rising edge of the clock. Each
16-bit DSC transfer is comprised of an address followed
by data.
• Software support for HTML 1.0, 2.0 and 3.2, *.aiff, *.au and
*.wav audio file formats and *.gif, *.jpg and *.xbm graphic file
formats, JavaScript 1.1, SSL 2.0 and SSL 3.0
• Character generation and software support for English,
Big 5/GB Chinese and Japanese fonts
• Software support for infrared remote control and wireless
keyboard
The ES4428 is available in an industry-standard 208-pin Plastic
Quad Flat Pack (PQFP) package, while the ES4427 is available
in an industry-standard 100-pin PQFP package.
ESS Technology, Inc.
SAM0358-052201
1
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