參數(shù)資料
型號(hào)： L64105QC-27
廠商： LSI CORP
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝： PLASTIC, QFP-160
文件頁(yè)數(shù)： 6/30頁(yè)
文件大?。?/td> 239K
代理商： L64105QC-27
14
MPEG-2 Audio/Video Decoder
Channel Interface
AREQ_N
Audio Transfer Request
Output
When the L64105 asserts this signal LOW, it indicates
that the L64105 is ready to receive a new byte of coded
audio data (or system data in system mode). The L64105
is considered ready when both the interface is ready and
there is room in the audio channel buffer. If this is not
true, then AREQ_N is not asserted. The maximum trans-
fer rate over this interface is 20 Mbit/s.
VAVALID_N
Audio Data Valid
Input
The rising edge of VAVALID_N writes the next byte of
audio data or PS data that is present on the CH[7:0] pins.
VAVALID_N can be used with the DCK data clock for syn-
chronous input to the L64105’s channel interface.
CH_DATA[7:0] Channel Data Bus
Input
CH_DATA[7:0] is an input bus that serves as a parallel
path for incoming channel data.
DCK
Channel Data Clock
Input
The DCK is a free-running clock from the external chan-
nel. Together, the DCK and VALID_N signals can write
data synchronously to the L64105 channel input.
ERROR_N
Error
Input
ERROR_N is an active-LOW input signal. The external
channel device asserts this signal to indicate that the
channel data contains an error. The ERROR_N signal is
latched with the data on the rising edge of VAVALID_N or
VVALID_N. ERROR_N indicates uncorrectable errors in
the channel, and invokes error handling in the L64105.
ERROR_N is not used for DMA transfers.
REQ_N
Video Transfer Request
Output
This signal is an active-LOW output. The L64105 asserts
REQ_N when it is ready to receive a new byte of coded
video data. The L64105 is ready when both the interface
is ready and there is room in the video channel buffer. If
these conditions are not true, REQ_N is not asserted.
The maximum transfer rate over this interface is 20
Mbit/s.
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