Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ADV7281 Datasheet(PDF) 25 Page - Analog Devices

Part # ADV7281
Description  10-Bit, 4 Oversampled SDTV Video Decoder with Differential Inputs
PDF  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADV7281 Datasheet(HTML) 25 Page - Analog Devices

Back Button ADV7281 Datasheet HTML 21Page - Analog Devices ADV7281 Datasheet HTML 22Page - Analog Devices ADV7281 Datasheet HTML 23Page - Analog Devices ADV7281 Datasheet HTML 24Page - Analog Devices ADV7281 Datasheet HTML 25Page - Analog Devices ADV7281 Datasheet HTML 26Page - Analog Devices ADV7281 Datasheet HTML 27Page - Analog Devices ADV7281 Datasheet HTML 28Page - Analog Devices ADV7281 Datasheet HTML 29Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 25 / 32 page
background image
Data Sheet
ADV7281
Rev. A | Page 25 of 32
REGISTER MAPS
The ADV7281 contains a single main register map. The
main register map contains three sub maps: user sub map,
interrupt/VDP map, User Sub Map2.
The ADV7281-M/ADV7281-MA contain two register maps:
the main register map and the CSI register map (see Figure 18).
The main register map of the ADV7281-M/ADV7281-MA
contains three sub maps in a similar manner as the ADV7281.
Main Map
The I2C slave address of the main map of the ADV7281-M/
ADV7281-MA is set by the ALSB pin (see Table 20). The main
map allows the user to program the I2C slave address of the CSI
map. The main map contains three sub maps: the user sub map,
the interrupt/VDP sub map, and User Sub Map 2. These three
sub maps are accessed by writing to the SUB_USR_EN bits
(Address 0x0E[6:5]) within the main map (see Figure 18 and
Table 21).
User Sub Map
The user sub map contains registers that program the analog
front end and digital core of the ADV7281-M/ADV7281-MA.
The user sub map has the same I2C slave address as the main
map. To access the user sub map, set the SUB_USR_EN bits in
the main map (Address 0x0E[6:5]) to 00.
Interrupt/VDP Sub Map
The interrupt/VDP sub map contains registers that can be used to
program internal interrupts, control the INTRQ pin, and decode
vertical blanking interval (VBI) data.
The interrupt/VDP sub map has the same I2C slave address
as the main map. To access the interrupt/VDP sub map, set the
SUB_USR_EN bits in the main map (Address 0x0E[6:5]) to 01.
User Sub Map 2
User Sub Map 2 contains registers that control the ACE, down
dither, and fast lock functions. It also contains controls that set the
acceptable input luma and chroma limits before the ADV7281-M/
ADV7281-MA enter free run and color kill modes.
User Sub Map 2 has the same I2C slave address as the main map.
To access User Sub Map 2, set the SUB_USR_EN bits in the main
map (Address 0x0E[6:5]) to 10.
CSI MAP
DEVICE ADDRESS
(RECOMMENDED
SETTINGS)
WRITE: 0x88
READ: 0x89
CSI MAP ADDRESS IS
PROGRAMMABLE AND SET BY
REGISTER 0xFE IN THE USER
SUB MAP
MAIN MAP
DEVICE ADDRESS
ALSB PIN HIGH
WRITE: 0x42
READ: 0x43
ALSB PIN LOW
WRITE: 0x40
READ: 0x41
0x0E[6:5] = 00
USER
SUB MAP
0x0E[6:5] = 01
INTERRUPT/VDP
SUB MAP
0x0E[6:5] = 10
USER SUB
MAP 2
NOTES
1. CSI MAP ONLY APPLIES TO THE ADV7281-M/ADV7281-MA MODELS.
Figure 18. Register Map and Sub Map Access
Table 21. I2C Register Map and Sub Map Addresses
ALSB Pin
R/W Bit
Slave Address
SUB_USR_EN Bits
(Address 0x0E[6:5])
Register Map or Sub Map
0
0 (write)
0x40
00
User sub map
0
1 (read)
0x41
00
User sub map
0
0 (write)
0x40
01
Interrupt/VDP sub map
0
1 (read)
0x41
01
Interrupt/VDP sub map
0
0 (write)
0x40
10
User Sub Map 2
0
1 (read)
0x41
10
User Sub Map 2
1
0 (write)
0x42
00
User sub map
1
1 (read)
0x43
00
User sub map
1
0 (write)
0x42
01
Interrupt/VDP sub map
1
1 (read)
0x43
01
Interrupt/VDP sub map
1
0 (write)
0x42
10
User Sub Map 2
1
1 (read)
0x43
10
User Sub Map 2
X1
0 (write)
0x88
XX1
CSI map (ADV7281-M/ADV7281-MA only)
X1
1 (read)
0x89
XX1
CSI map (ADV7281-M/ADV7281-MA only)
1
X and XX mean don’t care.



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com