參數(shù)資料
型號: L64780
廠商: LSI Corporation
英文描述: DVB-T COFDM Demodulator(對地?cái)?shù)字視頻廣播 正交編碼頻率分割多路處理解調(diào)器)
中文描述: 的DVB - T COFDM解調(diào)器(對地?cái)?shù)字視頻廣播正交編碼頻率分割多路處理解調(diào)器)
文件頁數(shù): 37/126頁
文件大小: 953K
代理商: L64780
L64780 DVB-T OFDM Demodulator
3-1
Chapter 3
Interfaces
This chapter describes the interfaces for the LSI Logic L64780 DVB-T
COFDM Demodulator. It consists of the following sections:
Section 3.1, “Output Interface,” page 3-1
Section 3.2, “MUXIN Interface,” page 3-8
Section 3.3, “MUXOUT Interface,” page 3-13
Section 3.4, “Microprocessor Interface,” page 3-16
3.1 Output Interface
The output interface formats the soft decisions for presentation to the
downstream Viterbi decoder. The input to this block is a stream of four-
bit or 3-bit Viterbi soft decisions from the inner bit deinterleaver. The
output from this block connects to a Viterbi decoder that is external to
the L64780. The output from soft decisions is in a format suitable for
direct connection to the L64724 or L64705.
This block operates differently in nonhierarchical and hierarchical modes,
and can have a serial or parallel output format. This block’s operational
modes are described in the following subsections.
3.1.1 Output Format in Nonhierarchical Mode
In nonhierarchical mode, the output format can be serial or parallel.
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