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參數(shù)資料
| 型號： | GS1559-CBE2 |
| 廠商： | Gennum Corporation |
| 英文描述： | GS1559 HD-LINX-TM II Multi-Rate Deserializer with Loop-Through Cable Driver |
| 中文描述： | GS1559的HD - LINX進程，商標第二多速率解串器與環(huán)通電纜驅動器 |
| 文件頁數(shù)： | 42/74頁 |
| 文件大小： | 686K |
| 代理商： | GS1559-CBE2 |
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GS1559 Data Sheet
30572 - 4
July 2005
42 of 74
Figure 4-4: DVB-ASI FIFO Implementation Using The GS1559
4.9 Data Through Mode
The GS1559 may be configured by the application layer to operate as a simple
serial-to-parallel converter. In this mode, the device presents data to the output
data bus without performing any decoding, descrambling or word-alignment.
Data through mode is enabled only when the MASTER/SLAVE, SMPTE_BYPASS,
and DVB_ASI input pins are set LOW. Under these conditions, the lock detection
algorithm enters PLL lock mode, (see
Lock Detect on page 31
), such that the
device may reclock data not conforming to SMPTE or DVB-ASI streams. The
LOCKED pin will indicate analog lock.
When operating in master mode, the GS1559 will set the SMPTE_BYPASS and
DVB_ASI signals to logic LOW if presented with a data stream without SMPTE
TRS ID words or DVB-ASI sync words. The LOCKED and data bus outputs will be
forced LOW and the serial digital loop-through output will be a buffered version of
the input.
4.10 Additional Processing Functions
The GS1559 contains an additional data processing block which is available in
SMPTE mode only, (see
SMPTE Functionality on page 34
).
4.10.1 FIFO Load Pulse
To aid in the application-specific implementation of auto-phasing and line
synchronization functions, the GS1559 will generate a FIFO load pulse to reset
line-based FIFO storage.
The FIFO_LD output pin will normally be HIGH but will go LOW for one PCLK
period, thereby generating a FIFO write reset signal.
The FIFO load pulse will be generated such that it is co-timed to the SAV XYZ code
word presented to the output data bus. This ensures that the next PCLK cycle will
correspond to the first active sample of the video line.
Figure 4-5
shows the timing relationship between the FIFO_LD signal and the
output video data.
8
8
AOUT ~ HOUT
WORDERR
PCLK = 27MHz
SYNCOUT
DDI
DDI
CLK_IN
CLK_OUT
FIFO
READ_CLK
<27MHz
FE
FF
TS
WE
WORDERR
GS1559
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| GS1560 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HD-LINX II Voltage Controlled Oscillator |
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| GS1560A_09 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HD-LINX II Dual-Rate Deserializer |
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