GS1582-IBE3 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
GS1582-IBE3
Semtech Corporation
GS1582-IBE3 Datasheet PDF : 115 Pages
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On lines where the SMPTE 352M packet is already present, the audio core places new
and existing audio data packets contiguously after the 352M packets. For HD formats,
the 352M packets are embedded in the luma channel of the video data stream; therefore,
no audio data packets will be placed after the 352M packets.
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Video Signal Input to Audio Core (with existing Audio Data Packets)
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Video Signal after deleting Audio Groups 1 & 2 (ONE_AGR = 0)
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Video Signal after Audio Groups 3 & 4 stored in RAM
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Video Signal Output after replacement of Audio Groups 1 & 2
Figure 4-17: Audio Group Replacement Example (HD Formats)
Audio group replacement mode is selected by setting the AGR bit of the host interface
HIGH. By default, the GS1582 replaces two audio groups with their DID set in IDA[1:0]
and IDB[1:0]. To replace only one audio group, with group DID set in IDA[1:0], set the
ONE_AGR bit in the host interface HIGH. The audio control packets, if present, will not
be replaced unless the CTR_AGR host interface bit is set HIGH. The audio control packet
information will be replaced with data programmed in the associated registers in the
host interface. See Audio Control Packets on page 46.
Refer to Section 4.13.3 for HD and SD multiplexer core status and configuration
registers.
GS1582 Multi-Rate Serializer with Cable Driver, Audio
Multiplexer and ClockCleanerTM
Data Sheet
40117 - 4
December 2011
50 of 115
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