Philips Semiconductors
Product specification
9-bit video input processor
SAA7113H
+255
+255
+240
+255
+240
handbook, full pagewidth
blue 100%
blue 75%
red 100%
white
+235
red 75%
+212
+212
colourless
colourless
LUMINANCE 100%
+128
+128
+128
U-COMPONENT
V-COMPONENT
yellow 75%
cyan 75%
+44
+16
0
+44
+16
0
yellow 100%
cyan 100%
black
+16
0
MGC634
a. Y output range.
b. U output range (CB).
c. V output range (CR).
Equations for modification to the YUV levels via BCS control I2C-bus bytes BRIG, CONT and SATN.
Luminance:
CONT
YOUT = Int ----------------- × (Y – 128) + BRIG
71
Chrominance:
SATN
UVOUT = Int ---------------- × (C R, C B – 128) + 128
64
It should be noted that the resulting levels are limited to 1 to 254 in accordance with ITU-601/656 standard.
Fig.23 YUV 4 : 2 : 2 levels on the 8-bit VPO-bus (data types 6 and 15).
Table 13 YUV data format on the 8-bit VPO-bus (data types 6 and 15)
TIMING
REFERENCE
CODE
TIMING
REFERENCE
CODE
BLANKING
PERIOD
BLANKING
PERIOD
720 PIXELS YUV 4 : 2 : 2 DATA
... 80 10 FF 00 00 SAV CB0 Y0 CR0 Y1 CB2 Y2 ... CR718 Y719 FF 00 00 EAV 80 10 ...
Table 14 Explanation to Table 13
NAME
SAV
EXPLANATION
start of active video range; see Tables 5 to 7
CBn
Yn
U (B − Y) colour difference component, pixel number n = 0, 2, 4 to 718
Y (luminance) component, pixel number n = 0, 1, 2, 3 to 719
V (R − Y) colour difference component, pixel number n = 0, 2, 4 to 718
end of active video range; see Tables 5 to 7
CRn
EAV
1999 Jul 01
31
NXP [ NXP ]
