VPC3232D datasheet(73/78 Pages) MICRONAS

73 / 78 page

ADVANCE INFORMATION

VPC 323xD, VPC 324xD

Micronas

5.2. Application Note: PIP Mode Programming

5.2.1. Procedure to Program a PIP Mode

For the VPCpip or VPCsingle:

1. set the scaler according to the PIP size to be used

(see Table 2–11).

2. write the registers VPCMODE and PIPMODE

according to the mode to be set.

3. in expert mode write the registers NLIN, NPIX and

NPFB.

4. write the registers COLBGD, COLFR1, COLFR2,

HSTR and VSTR, if a different value as the default

one is used.

5. write the registers LINOFFS and PIXOFFS, if a dif-

ferent value as the default one or more than 4 inset

pictures in the X or Y direction are used.

6. write the register PIPOPER to fill the frame and

background of an inset picture. This step is repeated

for all inset pictures in a multi PIP application.

For the VPCmain:

7. set the scaler to get a full size video

(see Table 2–11).

8. write the registers VPCMODE and PIPMODE

according to the mode to be set.

9. in expert mode write the registers NLIN, NPIX and

NPFB.

10. write the registers COLBGD, HSTR and VSTR, if a

different value as the default one is used.

11. write the register PIPOPER to start displaying PIP.

For the VPCpip or VPCsingle:

12. write the register PIPOPER to start filling a inset

picture with live video.

13. Only for tuner scanning: write the register

PIPOPER to stop filling a inset picture with live

video and changing the channel.

14. repeat steps 12 and 13 for all inset pictures in a

multi PIP application.

15. Only for VPCsingle: write the register PIPOPER to

start filling the main picture part outside the inset

picture(s) with live video.

For the VPCmain:

16. write the registers HSTR and VSTR, if the PIP

position should be changed.

17. write the register PIPOPER, to quit the PIP mode.

In an application with a single VPC, step 7 - 11 and

16 - 17 are dropped. Additionally, the free running

mode should be set in the cases shown in Table 2–12.

5.2.2. I2C Registers Programming for PIP Control

To program a PIP mode, the register VPCMODE, PIP-

MODE and PIPOPER should be written always, all

other registers are used only in the expert mode or if

the default values are modified (see Table 5–1).

Table 5–1: I2C register programing for PIP control

I2C register

update

VPCMODE, PIPMODE,

PIPOPER

should be written always

COLBGD, COLFR1,

COLFR2, HSTR, VSTR

should be written only, if the default values have to be modified

LINOFFS, PIXOFFS

VPCpip

VPCmain

VPCsingle

only used in expert

mode, when more than 4

inset pictures in the X or

Y direction are used.

not used.

only used if a different

value as the default one

or more than 4 inset pic-

tures in the X or Y direc-

tion are used

NLIN, NPIX, NPFB

should be written, only in the expert mode. (In the predefined modes the default

values are used.)

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