SAA7105E/V1/G NXP Semiconductors, SAA7105E/V1/G Datasheet - Page 11

• Manufacturer Part Number: SAA7105E/V1/G
• Description: Video ICs PC-DENC
• Manufacturer: NXP Semiconductors

Specifications of SAA7105E/V1/G

• Adc/dac Resolution: 10b
• Screening Level: Commercial
• Package Type: LBGA
• Pin Count: 156
• Lead Free Status / RoHS Status: Compliant
• Other names: SAA7105E/V1/G,557

Philips Semiconductors
SAA7104E_SAA7105E_2
Product data sheet
7.5 RGB Y-C
7.6 Horizontal scaler
For each direction, there are 2 registers controlling the position of the cursor, one controls
the position of the ‘hot spot’, the other register controls the insertion position. The hot spot
is the ‘tip’ of the pointer arrow. It can have any position in the bit map. The actual position
registers describe the co-ordinates of the hot spot. Again 0,0 is the upper left corner.
While it is not possible to move the hot spot beyond the left respectively upper screen
border this is perfectly legal for the right respectively lower border. It should be noted that
the cursor position is described relative to the input resolution.
Table 7:
Table 8:
RGB input signals to be encoded to PAL or NTSC are converted to the Y-C
space in this block. The color difference signals are fed through low-pass filters and
formatted to a ITU-R BT.601 like 4 : 2 : 2 data stream for further processing.
A gain adjust option corrects the level swing of the graphics world (black-to-white as
0 to 255) to the required range of 16 to 235.
The matrix and formatting blocks can be bypassed for Y-C
When the auxiliary VGA mode is selected, the output of the cursor insertion block is
immediately directed to the triple DAC.
The high quality horizontal scaler operates on the 4 : 2 : 2 data stream. Its control engines
compensate the color phase offset automatically.
The scaler starts processing after a programmable horizontal offset and continues with a
number of input pixels. Each input pixel is a programmable fraction of the current output
pixel (XINC/4096). A special case is XINC = 0, this sets the scaling factor to 1.
Byte
0
1
2
...
6
7
...
254
255
Cursor pattern
00
01
10
11
Cursor bit map
Cursor modes
B
-C
R
row 0 column 3
row 0 column 7
row 0 column 11
...
row 0 column 27
row 0 column 31
...
row 31 column 27
row 31 column 31
matrix
Cursor mode
CMODE = 0
second cursor color
first cursor color
transparent
inverted input
7
Rev. 02 — 23 December 2005
6
row 0 column 2
row 0 column 6
row 0 column 10
...
row 0 column 26
row 0 column 30
...
row 31 column 26
row 31 column 30
5
SAA7104E; SAA7105E
4
row 0 column 1
row 0 column 5
row 0 column 9
...
row 0 column 25
row 0 column 29
...
row 31 column 25
row 31 column 29
CMODE = 1
second cursor color
first cursor color
transparent
auxiliary cursor color
3
B
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
-C
R
graphics input.
2
Digital video encoder
row 0 column 0
row 0 column 4
row 0 column 8
...
row 0 column 24
row 0 column 28
...
row 31 column 24
row 31 column 28
B
1
-C
R
color
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