r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1045

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

(2)
The following shows an outline of the ARGB conversion specification.
256 entries
256 entries
256 entries
Pallete
Pointer
Overview of ARGB Conversion Functions
U0: -0.392 (U-128)
U0: -0.392 (U-128)
U0: -0.392 (U-128)
V0: 1.596 (V-128)
V0: 1.596 (V-128)
V0: 1.596 (V-128)
16 bits
A
A
A
.
.
.
.
.
.
.
.
.
.
.
.
Buffer RAM 0
U1: 2.017 (U-128)
U1: 2.017 (U-128)
U1: 2.017 (U-128)
V1: -0.813 (V-128)
V1: -0.813 (V-128)
V1: -0.813 (V-128)
Y1: 1.164 (Y-16)
Y1: 1.164 (Y-16)
Y1: 1.164 (Y-16)
16 bits
.
.
.
.
.
.
.
.
.
.
.
.
Figure 20.4 ARGB Conversion Functions
Output padding size
data inserted
information
(3) Color
Output pointer
reading
Data for the
frame width
of 1 line
A
A
A
A
A
A
A
A
A
A
A
** ** ** **
** ** ** **
DDR2-SDRAM
R
R
R
R
R
R
R
R
R
R
R
.
.
G
G
G
G
G
G
G
G
G
G
G
B
B
B
B
B
B
B
B
B
B
B
Frame width (4 pixels in this sample figure)
A
A
B
B
B
Multiple of 32 bytes of data
20. Graphics Data Translation Accelerator (GDTA)
R
R
R
R
R
(4) ARGB conversion (with output padding)
External memory
connected to the
local bus
G
G
G
G
G
Display image
Rev.1.00 Jan. 10, 2008 Page 1015 of 1658
B
B
B
B
B
A
A
A
A
A
R
R
R
R
R
G
G
G
G
G
B
B
B
B
B
Depending on the specified width and
padding size, there may exist either one or
neither of "padding data for output" and
"padding data not for output".
(including output padding data)
A
A
A
A
A
For output
(= 16 bytes)
Output padding size (= 48 bytes)
(5) Output data writing
R
R
R
R
R
Converted data output order
REJ09B0261-0100
G
G
G
G
G
B
B
B
B
B
Not for output
(= 32 bytes)