CS8553 Myson Technology, CS8553 Datasheet - Page 6

• Manufacturer Part Number: CS8553
• Description: TV Encoder
• Manufacturer: Myson Technology

PIXEL INPUT/OUTPUT TIMING
1. Clk is 2x the luminance sampling rate (13.5 MHz) or 4x the chrominance sampling rate (6.75 MHz), all signals
2. In accordance with CCIR656, the input pixel pattern begins during the first clk period after the falling edge of
3. Pixel input range: See Table 4.
Table-4
are reference to rising edge.
HSYNC (same for master mode and slave mode). The input pattern is Cb0, Y0, Cr0, Y1, Cb2, Y2, Cr2,
Y3,...... The input pin CBSWAP and md[3] (YCSWAP) could be used to swap cb, cr sequence and also y and
cb, cr sequence. See Figure 3 and Figure 4.
element
Cb
Cr
Y
Y: 16-235 for normal range; 0-15, 236-255 are invalid. When Y value is between 0-15, clamp to 16; when
CbCr: 16-240 for normal range with 128 mapped to 0; 0-15, 241-255 are invalid. When Cb/Cr is between
the Y value is between 236-255, Y is set to 235.
75% amplitude, 100% saturated YCbCr color bars
0-15, clamp to 16; when Cb/Cr is 241 to 255, Y is set to 240.
CLK
HSYNC*
YCSWAP=0
range
YCSWAP=1
16-235
16-240
16-240
P[7:0]/CBSWAP=0
P[7:0]/CBSWAP=1
P[7:0]/CBSWAP=0
P[7:0]/CBSWAP=1
White
235
128
128
cb0
y0
y0
cr0
Yellow
162
142
Figure-3 Master Mode
44
cb0
cr0
y0
y0
Cyan
cr0
cb0
y1
y1
131
156
44
cb1
cr2
y1
y1
Green
112
72
58
cb2
cr2
y2
y2
Magenta
cb2
cr2
y2
y2
184
198
84
cr2
cb2
y3
y3
Red
100
212
65
cr4
cb4
y3
y3
cb4
cr4
y4
y4
Blue
212
114
35
CS8553
page 6 of 21
black
128
128
16