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參數(shù)資料
| 型號： | L64020XBC |
| 廠商： | LSI CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP176 |
| 封裝： | PLASTIC, TQFP-176 |
| 文件頁數(shù)： | 32/32頁 |
| 文件大小： | 370K |
| 代理商： | L64020XBC |
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L64020 Single Chip DVD Decoder
9
video and audio channel buffers for rate matching, and zero or more
regions for graphic overlays. This storage is combined into a single,
contiguous memory space accessed over a 16-bit wide bus. In most
cases, this is one 1 M x 16-bit SDRAM, for a total memory space of
2 Mbytes.
The interface between the L64020 and SDRAM requires no external
components. The L64020 pinout allows connection to the SDRAM to be
made on a single PCB layer. During normal operation, the L64020
exclusively controls the SDRAM frame stores. However, it is possible to
access the SDRAM through the host port on the L64020 for test, for
verication, and for access to the overlay stores and channel information.
Video Output
The L64020 provides a digitized video output for subsequent display.
This data is in the ITU-R BT.601 (Y, Cb, Cr) color space. The video
output operates with a luminance sample rate that is always exactly half
the device clock, nominally 13.5 MHz from a 27-MHz input clock. The
L64020 accepts external synchronization signals. It supports a number
of trick modes specic to the needs of DVD systems, including freeze
frame, skip B pictures, skip B and P pictures, and search for GOP.
Audio Output
The audio decoder produces a serial PCM output that is compatible with
most commercial audio DACs. The audio decoder includes circuitry to
maintain the correct audio output sample rate based upon an external
audio clock. The decoder also provides an audio oversampling output
clock to the external audio DAC; this audio output clock is selected from
one of the audio clock inputs. In addition, the decoder supports the
IEC958 (Sony/Philips Digital Interface Format or S/P DIF) output format
for PCM samples and for transporting compressed Dolby Digital
bitstreams.
Audio Input
The L64020 supports several audio input modes. It supports connection
to a S/P DIF input that can be routed directly to the S/P DIF output. The
device also handles input signals that can be connected directly from a
CD-ROM player to the PCM output.
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