BCM7320 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – SINGLE CHIP SATELLITESET TOP BOX DECODER

OVERVIEW
HSI Data Port
Satellite 1
Transport In 1
Satellite 2
Transport In 2
Transport In 3
I²S Audio In
I²S Audio Out
SPDIF
QPSK
QPSK
XPORT
MiniTitan
MPEG
Video
Decoder
Graphics
NTSC/
PAL/
SECAM
Video
Encoders
(2)
Video
DACs
ISO7816
(2)
ADP
Audio
Decoder
EBI
EJTAG
Audio
DACs
(4)
V.90
Modem
USB
MIPS CPU
R5K
IDE
Host
I/F
DDR-SDRAM
Controller
Peripheral
CCIR 656
Video 1
Video 2
Audio 1
Left / Right
Audio 2
Left / Right
Host
IDE
Controller
Smart Card
ROM
(FLASH)
The BCM7320 is a satellite set-top box system on a chip, integrating
Broadcom’s field-proven BCM4500 QPSK demodulator technology, as
well as technology derived from Broadcom’s cable products (such as the
BCM7115 cable single chip device).
The BCM7320 is designed based on a unified memory architecture,
(UMA), utilizing double data rate (DDR) memory, either 16-bit or 32-bit
wide, depending on required performance.
The BCM7320 is the first complete single chip that can decode two
transport streams, delivered either via the external dual BCM3440
CMOS tuners or via the IDE host I/F from an external hard disk drive,
(or combination), and display the resulting decoded audio and video on
two independent TV monitors connected to the set-top box. A channel 3–
Test
ICE
DDR-DRAM
IR/LED/KEY/uART
SPI/I2C/GPIO/PWM
4 RF modulator is also included on-chip. The video encoder supports
NTSC/PAL & SECAM with optional Macrovision 7.1.
The BCM7320 includes Broadcom’s advanced 2D graphics engine,
offering true studio quality text and graphics with extremely efficient use
of memory and bandwidth
The BCM7320 also incorporates a complete MIPS64-based
microprocessor subsystem, including 32-KB Instruction cache, 32-KB
Data cache and 2-KB Read Ahead cache. Internal bridges to memory and
local busses provide support for external peripherals on-chip as well as
off-chip. A full range of peripheral devices are supported on the
BCM7320, including UARTs, dual ISO7816 smart card I/F's, GPIO,
counters/ timers, IR Tx/Rx, I2C and SPI controllers.
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®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2003 by BROADCOM CORPORATION. All rights reserved.
7320-PB02-R
12/29/03
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Fax: [phone]
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