ADV7150LS85 datasheet(22/36 Pages) AD

22 / 36 page

ADV7150

–22–

REV. A

COMMAND REGISTER 2 (CR2)

(Address Reg (A7–A0) = 06H)

This register contains a number of control bits as shown in the

diagram. CR2 is a 10-bit wide register. However, for program-

ming purposes, it may be considered as an 8-bit wide register

(CR28 and CR29 are both reserved).

The diagram shows the various operations under the control of

CR2. This register can be read from as well written to. In read

mode, CR28 and CR29 are both returned as zeros.

COMMAND REGISTER 2-BIT DESCRIPTION

R7 Trigger Polarity Control (CR20)

This bit is used when the device is in test/diagnostic mode. It

determines whether the pixel data is latched into the test regis-

ters in the rising or falling edge of R7. (See “Test Diagnostics”

section.)

IPLL Trigger Control (CR21)

This bit specifies whether the IPLL output is triggered from

BLANK

or SYNC.

SYNC

Recognition Control (CR22)

This bit specifies whether the video SYNC input is to be

encoded onto the IOG analog output or ignored.

Pedestal Enable Control (CR23)

This bit specifies whether a 0 IRE or a 7.5 IRE blanking pedes-

tal is to be generated on the video outputs.

True-Color/Pseudo-Color Mode Control (CR27–CR24)

These 4 bits specify the various color modes. These include a

24-bit true-color mode, two 15-bit true-color modes and three

8-bit pseudo color modes.

CR20

RESERVED*

CR26

CR25

CR24

CR27

CR21

PLL TRIGGER CONTROL

SYNC

BLANK

R7 TRIGGER

POLARITY CONTROL

CR20

CR29

CR28

CR22

IGNORE

DECODE

SYNC RECOGNITION

CONTROL

*THESE BITS ARE READ-

ONLY RESERVED BITS.

A READ CYCLE WILL

RETURN ZEROS "00."

CR21

CR23

CR22

TRUE COLOR/PSEUDO-COLOR MODE CONTROL

MODE

CR27

CR26

CR24

CR25

8-BIT PSEUDO COLOR ON R7–R0

8-BIT PSEUDO COLOR ON G7–G0

8-BIT PSEUDO COLOR ON B7–B0

15-BIT TRUE COLOR ON

R7–R3, G7–G3, B7–B3

15-BIT TRUE COLOR ON

R7–R0, G6–G0

24-BIT TRUE COLOR

R7–R0, G7–G0, B7–B0

PEDESTAL ENABLE

CONTROL

CR23

0 IRE

7.5 IRE

Command Register 2 (CR2) (CR29–CR20)

ADV7150LS85 датащи(PDF) 22 Page - Analog Devices

ADV7150LS85 датащи(HTML) 22 Page - Analog Devices

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 33 34 35 36

датащи скачать

ссылки URL