Analog Devices ADSP-SC58 Series Hardware Reference Manual page 855

ITU-R 656 Modes
Table 18-10: Operating Modes and Generic EPPI Operation
ITU-R BT.656 Rx
GP 0 FS
GP 1 FS
GP 2 FS
GP 3 FS
ITU-R 656 Input Modes
In the ITU-R 656 input modes, the video source provides the clock or the system supplies it externally.
As shown in the ITU-R 656 Input Submodes figure and described in the following sections, there are three submo-
des supported for ITU-R 656 inputs: entire field, active video only, and vertical blanking interval only.
18–16
How to configure
Entire field DIR= 0
XFRTYPE = b#01
Active video DIR = 0
XFRTYPE = b#00
Blanking only DIR = 0
XFRTYPE = b#10
Tx DIR = 1
XFRTYPE = b#11
FSCFG = b#00
Rx DIR = 0
XFRTYPE = b#11
FSCFG = b#00
Tx DIR = 1
XFRTYPE = b#11
FSCFG =b#01
Rx DIR = 0
XFRTYPE = b#11
FSCFG = b#01
Tx DIR = 1
XFRTYPE = b#11
FSCFG = b#10
Rx DIR = 0
XFRTYPE = b#11
FS_CFG = b#10
Tx DIR = 1
XFRTYPE = b#11
FSCFG = b#11
Rx DIR = 0
XFRTYPE = b#11
FSCFG = b#11
ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference
How to configure in ITU
Useful for R 656 Tx Mode
Applications where peri- BLANKGEN = 1 DLEN
odic frame syncs are not = (b#000, b#001 or
used to frame the data b#100)
Interfacing with ADCs, BLANKGEN = 1 DLEN
DACs, and other general- = (b#000, b#001 or
purpose devices b#100)
Video applications that BLANKGEN = 1 DLEN
use two hardware syn- = (b#000, b#001 or
chronization signals, b#100)
HSYNC and VSYNC
Video applications that BLANKGEN = 1 DLEN
use three hardware sync = (b#000, b#001 or
signals, HSYNC, b#100)
VSYNC, and FIELD