SAA7104E Datasheet, PDF (32/70 Pages) NXP Semiconductors – Digital video encoder

Philips Semiconductors
Digital video encoder
Product specification
SAA7104E; SAA7105E
Table 34 Subaddress 37H
DATA BYTE
YUPSC
YFIL
LOGIC
LEVEL
0
1
−
CZOOM
0
1
IGAIN
0
1
XINT
0
1
DESCRIPTION
normal operation of the vertical scaler; default after reset
vertical upscaling is enabled
controls the vertical interpolation filter, see Table 35; the filter is not available if
YUPSC = 1
normal operation of the cursor generator; default after reset
the cursor will be zoomed by a factor of 2 in both directions
expected input level swing is 16 to 235 (8-bit RGB); default after reset
expected input level swing is 0 to 255 (8-bit RGB)
no horizontal interpolation filter; default after reset
interpolation filter for horizontal upscaling is active
Table 35 Logic levels and function of YFIL
DATA BYTE
YFIL1
YFIL0
0
0
0
1
1
0
1
1
DESCRIPTION
no filter active; default after reset
filter is inserted before vertical scaling
filter is inserted after vertical scaling; YSKIP should be logic 0
reserved
Table 36 Subaddresses 38H and 39H
DATA BYTE
GY4 to GY0
GCD4 to GCD0
DESCRIPTION
Gain luminance of RGB (C_R, Y and C_B) output, ranging from (1 − ¹⁶⁄₃₂) to (1 + ¹⁵⁄₃₂).
Suggested nominal value = 0, depending on external application.
Gain colour difference of RGB (C_R, Y and C_B) output, ranging from
(1 − ¹⁶⁄₃₂) to (1 + ¹⁵⁄₃₂). Suggested nominal value = 0, depending on external
application.
2004 Mar 04
32