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BCM4201

器件型号:BCM4201
器件类别:无线/射频/通信    电信电路   
文件大小:328KB,共2页
厂商名称:Broadcom(博通)
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器件描述

Telecom Circuit, 1-Func, PQFP80, PLASTIC, QFP-80

参数
参数名称属性值
是否Rohs认证不符合
零件包装代码QFP
包装说明QFP,
针数80
Reach Compliance Codecompliant
JESD-30 代码X-PQFP-G80
功能数量1
端子数量80
封装主体材料PLASTIC/EPOXY
封装代码QFP
封装形状UNSPECIFIED
封装形式FLATPACK
峰值回流温度(摄氏度)225
认证状态Not Qualified
标称供电电压3.3 V
表面贴装YES
电信集成电路类型TELECOM CIRCUIT
端子形式GULL WING
端子位置QUAD
处于峰值回流温度下的最长时间NOT SPECIFIED
Base Number Matches1

文档预览

BCM4201
PRODUCT
BCM4201
B C M 4 2 0 1
Brief
RECEIVER
B E N E F I T S
O F
UNIVERSAL
F E AT U R E S
S AT E L L I T E
S U M M A R Y
The Broadcom® BCM4201 is a universal QPSK
®
Integrated satellite receiver
receiver for DIRECTV , DVB and Digicipher™ II
digital satellite reception
2-85 Mbps variable rate BPSK/OQPSK/QPSK receiver
Dual integrated 8-bit A/D converters
Dual square-root Nyquist matched filters (α=0.2-0.35)
All digital clock and carrier recovery
Integrated PLLs
A universal digital transmission solution for DVB,
DSS and Digicipher II systems
cost digital satellite IRDs
worldwide
An integrated solution enabling low complexity/low
Variable data rates support all satellite systems
Direct 480 MHz IF input greatly reduces system cost
and complexity
DVB/DIRECTV/Digicipher II-compliant FEC decoder
• 64-state Viterbi decoder supports rates = 5/11, 1/2, 3/5,
2/3, 3/4, 4/5, 5/6, 6/7, 7/8
• Programmable convolutional deinterleaver, I=12 or 13
with internal RAM
• Reed-Solomon decoder: (n,k) = (204,188) or
(146,130): t=8
Supports direct 480 MHz IF input
I2C and SPI compatible microcontroller interface
Integrated 8-bit A/D converters and PLL reduce
system manufacturing costs
Receives up to 85 Mbps for high-speed applications
Operates down to 1 MBaud with excellent adjacent
channel rejection characteristics due to 8-bit A/Ds
for low-speed applications such as SCPC
minimization
Specialized circuitry provided for cycle slip
On-chip BER tester to simplify system optimization
IEEE 1149.1 (JTAG) test interface
80-pin PQFP pin package
3.3 Volt operation
Satellite IRD Block Diagram
RF
IN
Tuner
BCM4201
DVB/
DIRECTV/
Digicipher II
Satellite
Receiver
with FEC
Memory
Decryption
PAL/NTSC Encoder
MPEG
Transport
MPEG
A/V
Audio DAC
V
I
D
E
O
A
U
D
I
O
CPU
I/O
Memory
B C M 4 2 0 1
O V E R V I E W
RA_I +/ -
Down
Conversion
Pre-processing
8
A/D
Phase/
Frequency
Recovery
A/D
8
Variable
Rate
Demod/
Equalizer
Nyquist
α
= .20 - .35
Viterbi
Decoder
k=7
Nyquist
α
= .20 - .35
Synch &
Deinter-
leaver
I=12,13
S_DATA
RS
Decoder
t=8
&
Descram
S_VALID
S_CLK
S_SYNC
P_DATA[7:0]
Deinterleaver
RAM
AGC_CTRL
Acquisition/Tracking Loops
and Clock Generation
JTAG
Interface
LNB_CTRL
JTAG[3:0]
M-Bus/SPI
Interface
MICRO[3:0]
The
BCM4201
Universal Satellite Receiver is an integrated digital
transmission solution for satellite Integrated Receiver Decoders
(IRDs). Integrated features in the
BCM4201
include a 2-85 Mbps
variable rate BPSK/QPSK/OQPSK receiver, dual 8-bit A/D
converters, a phase/frequency recovery block, variable rate digital
filters, square-root Nyquist matched filters, acquisition and
tracking loops, and a DVB/DIRECTV/Digicipher II compliant
concatenated Viterbi/Reed-Solomon FEC decoder with
deinterleaver. The receiver accepts an analog baseband or IF
modulated (up to 480 MHz) signal, and transmits a demodulated
error corrected output data stream. The
BCM4201
supports the
DVB digital transmission standard for satellite broadcasting, that
is in worldwide use today, the DIRECTV digital transmission
standard and Digicipher II ITU-R 217/11 digital transmission
standard.
Analog waveforms received by the
BCM4201
are sampled by
the integrated A/D converters, digitally mixed to baseband,
resampled, and filtered by dual square-root Nyquist filters.
Optimized soft decisions are delivered to a programmable rate
64-state Viterbi decoder, frame synchronization block,
deinterleaver, t=8 Reed-Solomon FEC, and derandomizer. The
final error-corrected output is delivered in MPEG-2 or
DIRECTV transport stream format.
The
BCM4201
is a very flexible, cost-effective solution. It is
compatable with DVB, DIRECTV and Digicipher II ITU-R
217/11 standards, enabling manufacturers to design the
BCM4201
into a single-standard IRD or a multi-standard IRD.
The receiver supports variable bit rates up to 85 Mbps, which
allows it to adapt to various satellite transponders in Europe,
North America, and Asia. The
BCM4201
is capable of
supporting low rate applications, down to 1 MBaud, for
applications such as SCPC. The
BCM4201
is optimized for
high-volume manufacturing. This level of integration in the
BCM4201
significantly reduces the cost and complexity of
manufacturing IRDs.
The
BCM4201
contains an extremely accurate on-chip
BER tester to simplify laboratory set-up and system
optimization. Specialized circuitry has been implemented
to virtually eliminate cycle slips.
Broadcom
and the pulse logo are registered trademarks of Broadcom Corporation.
Digicipher
is a trademark of General Instrument (now Motorola).
DIRECTV
is a registered trademark of DIRECTV, INC., a unit of Hughes Electronics Corporation.
For more information please contact us at:
Phone: 949-450-8700, FAX: 949-450-8710
Email: info@broadcom.com
Visit our web site at: www.broadcom.com
© 2000 BROADCOM CORPORATION
4201.PB01-R-05.31.00
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013

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