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參數(shù)資料
| 型號(hào)： | STA400A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | XMRADIO SDARS CHANNEL DECODER |
| 中文描述： | XMRADIO衛(wèi)星數(shù)字收音機(jī)信道解碼器 |
| 文件頁數(shù)： | 23/117頁 |
| 文件大?。?/td> | 910K |
| 代理商： | STA400A |
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STA400A
The depunctured R=1/3 coded data stream (equal for combined-satellite and terrestrial) is decoded by the Vit-
erbi Decoder using 6 bit of quantization (1 hard bit and 5 soft bits). The outer decoding process, the block
deinterleaving and the satellite/terrestrial selective combining is performed by the RS decoder circuit. Additional
feature of the FEC block is the Bit Error Rate estimation (computed separately for terrestrial and combined sat-
ellite) based on the re-encoding of the Viterbi decoded bit-stream.
1.6 PC BITSTREAM INTERFACES
After demodulation, TDM processing and FEC decoding the CDEC delivers the TSCC and the selected PRCs
to external devices for further processing. To implement this function, STA400A contains two identical Payload
Channel (PC) Bitstream Interfaces (see fig.1).
Each PC Interface performs the parallel to serial conversion and the reformatting of the data packets coming
from the PRC Demux Control block and provides serial data, clock and synchronization signals to the PC output
ports.
The Payload Channel output protocol (showed in fig.14) is configurable, independently for the two interfaces,
via the PC interface registers described in section 2.7.
Figure 14. PC Bitstream Output Protocol
The 432ms TDM frame is divided in 50 time intervals with the first two containing the TSCC data. Each time
interval contains a burst of 448 bytes (2 header bytes H1 and H2, and 446 bytes of PRC data) transmitted from
the PRC Demux to the PC Interface.
The PC output ports are enabled depending on the settings of the register Pcid Data Wr (addr: 0x0651-0x0652).
Each output port provides 5 signals:
I
PCSD, Payload Channel Serial Data
I
PCDC, Payload Channel Data Clock
I
PCFS, Payload Channel PRC Frame Sync
I
PCBS, Payload Channel Byte Sync
PCSD
PCDC
PCFS
432ms frame period
CLOCK
TSCC1
TSCC2
PRC_An
PRC_A1
PRC_B1
PRC_Zn
PRC_Z1
PRC_Bn
PCSD
PCDC
PCFS
H1
H2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STA400AV WAF | 制造商:Texas Instruments 功能描述: |
| STA400MTEP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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| STA401 | 制造商:Distributed By MCM 功能描述:SUB ONLY SANKEN TRANSISOR ARRY 10-PIN SIP |
| STA401A | 制造商:Sanken Electric Co Ltd 功能描述:Trans Darlington NPN 70V 4A 10-Pin SIP Box 制造商:Sanken Electric Co Ltd 功能描述:TRANS ARRAY SINK DVR NPN 10-SIP 制造商:Panasonic Industrial Company 功能描述:TRANSISTOR SELL STA401A |
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