Analog Devices ADSP-SC58 Series Hardware Reference Manual page 845

EPPI Functional Description
Figure 18-2: Data Mirroring Transmit
Windowing
The EPPI supports windowing for general-purpose input modes. The module can be configured to bring in a region
of interest instead of the entire frame of data, which helps reduce bandwidth requirements.
Preamble, Blanking and Stripping Support
The EPPI supports embedding blanking information and clipping of active data for transmission. This functionality
is available for single-channel data, interleaved data, and parallel data and supports a data length
(EPPI_CTL.DLEN) of 16, 20 bits or 24 bits.
Support of preamble generation or detection and stripping of blanking information is also provided for ITU656
mode and the SMPTE 274M and 296M HD formats. The Video Mode Comparison table shows the SMPTE stand-
ards in comparison with the ITU656 modes. Preambles for SMPTE and ITU656 modes are identical. Extension of
preamble to 12 bits is also supported.
Table 18-5: Video Mode Comparison
Video Mode Frame Rate
ITU656 (NTSC) 30
ITU656 (PAL) 25
SMPTE 296M 30
60
18–6
EPPIDATA [0]
0
EPPIDATA [15]
1
EPPIDATA [1]
0
EPPIDATA [14]
1
EPPI
EPPIDATA [15]
0
EPPIDATA [0]
1
DAT_MRR
Frame Resolution Active Video Resolu-
tion
1716x525 720x480
1728x625 720x576
3300x750 1280x720
1650x750 1280x720
ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference
TRANSMIT
DATA
FLIP
EPPIDATA [0]
FLOP
FLIP
EPPIDATA [1]
FLOP
EPPIDATA [2]
EPPIDATA [14]
FLIP
EPPIDATA [15]
FLOP
EPPI_CLK
Sampling Frequency
(MHz)
27.02
27.00
74.25
74.25
Remarks
Y-C interleaved
Y-C interleaved
Y,C separate
Y,C separate