BCM7038 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – DUAL HD DIGITAL VIDEO SYSTEM ON CHIP SOLUTION FOR CABLE SATELLITE AND DTV

TS Input
OVERVIEW
2x HSX Output
656 Input
IF
D ig ita l
A u d io
A n a lo g
A u d io
Data
T ra n s p o rt
IF Dem od
N T S C /P A L
Video Decoder
BTSC Decoder
2x I²S Ports
1x SPDIF
2x Dual Audio
DACs
Dual
Channel
A u d io
P ro ce ss o r
D D R -D R A M
C o n tro lle r
(200 MHz)
2x MPEG
HD/SD Video
Decoder
M IPS R5Kf
CPU
(300 MHz)
Video and
G ra p h ic s
P rocessing
(BVN)
VEC
(Dual
C h a n n e l)
2D BLTer
3D Core
EJTAG
P e rip h e ra ls
EBI
PCI
Functional Block Diagram
64-bit wide DDR DRAM Test IR/LED/Key/UART SRAM
PCI
ICE SPI/I²C/GPIO/PW M ROM
Sm artCard
FLASH
6x Video
DACs
H D M I/D V I
656
RF Mod
V .9 0
USB 2.0
VIDEO
C om ponent
S -V id e o
Com posite
Ch 3/4
Dual port
Ethernet
SATA
Serial
ATA
The BCM7038 combines an IF demodulator, an NTSC/PAL video 3D
Y/C comb filter enabled decoder, a transport processor, dual digital
audio processors, dual high-definition (HD) MPEG video decoders,
advanced 2D and 3D graphics processing, digital processing of analog
video and audio, analog video digitizer and DAC functions (six DACs),
stereo high-fidelity audio DACs, an MIPS R5000 class processor, and a
peripheral control unit providing a variety of set-top box control
functions.
The BCM7038 has an MPEG-2 DVB compliant transport processor with
advanced section filtering capability, a DVB descrambler, dual MPEG-
2 (MP@HL profile) video decoders, a BTSC audio decoder, dual Dolby
AC3/MPEG layer 1 and 2 audio decoders with a SPDIF and two pairs of
analog output, dual NTSC/PAL/SECAM video encoders with
Macrovision™ and analog output, and an NTSC/PAL analog video
decoder with a 3D comb filter and time-base correction.
The IF demodulator receives its input from a 12-bit A/D converter. The
video decoder uses this same 12-bit A/D converter for CVBS inputs. A
fixed 54-MHz crystal clock is used for the highest possible fidelity clock
in the ADC.
In addition, the BCM7038 includes Broadcom’s advanced 2D and 3D
graphics processing, offering true studio quality text and graphics with
extremely efficient use of memory bandwidth.
The BCM7038 supports up to three simultaneous records and playbacks
of digital video. The BCM7038 also incorporates a complete MIPS64™-
based microprocessor subsystem, including caches with bridging to
memory and a local bus. Integrated peripherals include two UARTS,
three ISO7816 smart card interfaces, counter/timers, GPIO, keypad,
LED, dual IR Tx/Rx, IR blaster, IR keyboard, and BSC and SPI
controllers.
Advanced connectivity features include two USB 2.0 ports, one USB 1.1
port, dual serial ATA ports, an Ethernet port with MAC and PHY, an
HDMI interface, a DVI/HDMI MAC and PHY. Incorporated in the HD
video display path is a multi-frame deinterlacer circuit. All scaling from
SD to HD and HD to SD occurs in a single pass thereby allowing for a
high-quality rendering. The BCM7038 is capable of displaying four
video frames simultaneously.
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®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2003 by BROADCOM CORPORATION. All rights reserved.
7038-PB00-R
12/29/03
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com