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Section 27 Video Display Controller 3
R01UH0134EJ0400 Rev. 4.00 Page 1553 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
27.5.2 BT.656 Video Input
This module supports 8-bit video input conforming to the BT.656 standard. From the reference
code (EAV or SAV), the Vsync, Hsync, and field information are obtained. Tables 27.4 to 27.6
and figures 27.3 and 27.4 give an overview of the standard.
Table 27.4 Reference Code (EAV/SAV)
Bit
Number
7 6 5 4 3 2 1 0
Function Fixed F V H P3 P2 P1 P0
0 1 0 0 0 0 0 0 0
1 1 0 0 1 1 1 0 1
2 1 0 1 0 1 0 1 1
3 1 0 1 1 0 1 1 0
4 1 1 0 0 0 1 1 1
5 1 1 0 1 1 0 1 0
6 1 1 1 0 1 1 0 0
[Legend]
F: 0: Fist field; 1: Second field
V: 1 for the vertical blanking period; otherwise, 0.
H: 0: SAV; 1: EAV
P3 to P0: Protection bits
Table 27.5 525-Line Control in BT.656
Line Number EAV SAV Field Control (F) Vertical Blanking Control (V)
4 to 19 B6 AB 0 First field 1 Blanking field
20 to 263 9D 80 0 0 Digital active field
264 to 265 B6 AB 0 1 Blanking field
266 to 282 F1 EC 1 Second field 1 Blanking field
283 to 525 DA C7 1 0 Digital active field
1 to 3 F1 EC 1 1 Blanking field