cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 183
cx25870
Manufacturer Part Number
cx25870
Description
Video Encoder With Adaptive Flicker Filtering And Hdtv Output
Manufacturer
Conexant Systems, Inc.
Datasheet
1.CX25870.pdf
(291 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
cx25870-14P
Manufacturer:
CONEXANT
Quantity:
20 000
- Current page: 183 of 291
- Download datasheet (3Mb)
100381B
Appendix A Scaling and I/0 Timing
Register Calculations
The calculated values are used to program the registers controlling the total active
pixels and lines in the input frame and the output field, as well as the vertical
scaling register and the clock PLL registers. These calculations assume pixel
resolution for synchronizing the graphics controller, master interface operation
unless otherwise stated, and require the following input values:
Tables A-1
Table A-3
Figures A-1
most common desktop active resolutions.
common overscan values for the 640 x 480, 800 x 600, and 1024 x 768 active
resolutions that enable dual display on both the VGA monitor and TV.
MFP—Minimum Front Porch Blanking in the Input in Clocks = max
(12, Controller_Minimum_Front_Porch_Blanking_Clocks);
MBP—Minimum Back Porch Blanking in the Input in Clocks = max
(4, Controller_Minimum_Back_Porch_Blanking_Clocks);
VOC—desired Vertical Overscan Compensation (e.g., 0.15)
HOC—desired Horizontal Overscan Compensation (e.g., 0.15)
V_ACTIVEI—Active Lines per Input Frame (e.g., 480 or 600 or 768)
H_ACTIVE—Active Pixels per Input Line (e.g., 640 or 800 or 1024)
ALO—Target Active Lines per Output Field (See
TLO—Total Lines per Output Field (See
ATO—Active Time per Output Line (See
TTO—Total Time per Output Line (See
details the constant software values depending on the video output.
and
through
A-2
Conexant
contain details of the supported video output formats.
A-8
illustrate allowable overscan compensation pairs for the
A49
Tables A-3
Table
Table
Table
A-3)
through
A-3)
A-3)
Table
A-27
A-3)
list the most
A-1
Related parts for cx25870
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Bluetooth RF Transceiver
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Bluetooth RF Transceiver
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
ATM transmitter/receiver with UTOPIA interface
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Service SAR controller
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
CN8223EPFATM Transmitter/Receiver with UTOPIA Interface
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Embedded modem family
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Fully integrated T1/E1 framer and line interface
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Flicker-free video encoder
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Home Networking Physical Layer Device with Integrated Analog Front End Circuitry Data Sheet (Preliminary) CX82100-41Home Network Processor (HNP)
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Flicker-free video encoder
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
SmartV.XX Modem
Manufacturer:
Conexant Systems, Inc.
Datasheet:
Part Number:
Description:
Multichannel synchronous communications controller
Manufacturer:
Conexant Systems, Inc.
Datasheet: