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Supported Data Formats
Table 18-11: EPPI Receive Data Formats (Continued)
Input Data Width
Use Model
16
8-bit luma/chroma pair for NTSC or
HD
16-bit luma/chroma pair for NTSC
or HD
RGB565 sensor
8-bit ADCs
I/Q pair
16-bit ADCs
I/Q pair
Transmit Data Formats
The EPPI Transmit Data Formats table provides information about EPPI configuration for specific use models for
transmit data.
Table 18-12: EPPI Transmit Data Formats
Output Data Width
8
10
18–24
Use Model
NTSC/PAL data
Serial RGB for lower-resolution
LCDs
NTSC/PAL data
DACs
ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference
Splitting/Packing Options
EPPI_CTL.SPLTEO =1, EPPI_CTL.SPLTWRD =1,
EPPI_CTL.SUBSPLTODD =1 if necessary to separate chroma compo-
nents.
EPPI_CTL.SPLTEO =1, EPPI_CTL.SPLTWRD =0,
EPPI_CTL.SUBSPLTODD =1 if necessary to separate chroma compo-
nents.
No splitting possible.
EPPI_CTL.PACKEN =1. Two EPPI words are packed to a 32-bit DMA
data. EPPI_CTL.RGBFMTEN is valid only in transmit modes. So,
RGB565 cannot be byte aligned in memory.
EPPI_CTL.PACKEN =0. Each EPPI word is sent as a 16-bit data on
the 32-bit DMA bus. This transfer consumes double the bandwidth of
the 16-bit case with EPPI_CTL.PACKEN =1
EPPI_CTL.SPLTEO =1, EPPI_CTL.SPLTWRD =1,
EPPI_CTL.SUBSPLTODD =0.
EPPI_CTL.SPLTEO =1, EPPI_CTL.SPLTWRD =0,
EPPI_CTL.SUBSPLTODD =0.
Splitting/Packing Options
EPPI_CTL.SPLTEO =1
EPPI_CTL.SUBSPLTODD =1 if the chroma components (U and V)
come in separate DMA words.
No splitting possible.
EPPI_CTL.PACKEN =1. The 32-bit DMA data is unpacked to drive
four EPPI words.
EPPI_CTL.PACKEN =0. The lowest 8 bits of the DMA data is driven
on the EPPI data and the rest of the 24 bits are discarded. This transfer
consumes 4 times the DMA bandwidth of the 8-bit case with
EPPI_CTL.PACKEN =1.
EPPI_CTL.SPLTEO =1
EPPI_CTL.SUBSPLTODD =1 if the chroma components (U and V)
come in separate DMA words.
EPPI_CTL.SPLTEO =1, EPPI_CTL.SUBSPLTODD =0.
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