saa6713ah NXP Semiconductors, saa6713ah Datasheet - Page 49

• Manufacturer Part Number: saa6713ah
• Description: Xga Analog Input Flat Panel Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7.8.4
Sampling of interlaced RGB data is enabled by
interlace_on. The polarity of the input fields is determined
by the number of hsyncs within a frame. The even fields
are expected to contain an additional line if
reverse_field_id is set to logic 0, or to contain one line less
if reverse_field_id is set to logic 1.
In the interlaced input mode, the vertical sampling length
parameter in_v_length has to be programmed with the
length of the actual field (is half the frame length).
For de-interlacing, the upscaler has to be programmed
accordingly.
2004 Apr 05
handbook, full pagewidth
handbook, full pagewidth
XGA analog input flat panel controller
I
HSYNC
NTERLACED INPUT
VCLK
PA,
PB,
PC
RGB data
VHS
Fig.13 RGB input port timing using a data enable signal (connected to HSYNC).
n
X
0
Fig.12 RGB data sampling (hsync_edge = 0).
in_h_offset
1
h_offset
2
49
7.8.5
The input interface contains a picture generator, that can
be used to apply simple test pictures instead of using the
ADC. A front-end clock has to be provided
(see Section 7.4.1).
The picture generator is active when test_pic_on is logic 1.
It generates a picture of the size defined by in_h_length
and in_v_length with additional blanking. The total line
length and number of lines are defined by h_length_total
and v_length_total. The input interface sample offset is
without effect when using the picture generator.
3
0
1
P
ICTURE GENERATOR
2 3 4 5
in_h_length
4
5
h_length
6
SAA6713AH
Product specification
MHB253
MHC220
X