VPC3232D datasheet(74/78 Pages) MICRONAS

74 / 78 page

VPC 323xD, VPC 324xD

ADVANCE INFORMATION

Micronas

Notes:

- NPIXmain and NLINmain: correspond to VPCmain

- NPIXPIP and NLINPIP: correspond to VPCsingle and VPCpip

- NROWfp and NPELfp: number of lines per field and number of pixels per line of a full picture

(e.g. NROWfp=288, NPELfp= 720 for PAL at 13.5 MHz)

- NROWsp and NPELsp: number of lines per field and number of pixels per line of a inset picture

The limits of the I2C register settings are given in Table

5–2. No range check and value limitation are carried

out in the field memory controller. An illegal setting of

these parameters leads to a error behavior of the PIP

function.

The PIP display is controlled by the commands written

into the register PIPOPER. For the VPCmain, the PIP

display is turned on or off by the commends DIS-

START and DISSTOP. For the VPCpip and VPCsingle, 8

commands are available:

– WRFRCOL1, WRFRCOL2: to fill the frame of a

inset picture with the color COLFR1 or COLFR2,

– WRBGD, WRBGDNF: to fill a inset picture with the

background color COLBGD,

– WRPIC, WRPICNF, WRSTOP: to start and stop to

write a inset picture with the active video,

– WRMAIN: to start write the main picture part outside

the inset picture(s) with the active video (only for

VPCsingle).

While WRPIC, WRSTOP, WRFRCOL1, WRFRCOL2

and WRBGD control a display with a frame (see Fig.

5–2), WRPICNF and WRBGDNF control a display

without a frame (see Fig. 5–3). The number of the inset

picture addressed by the current commend is given by

bits NSPX and NSPY in the register PIPOPER.

In the display window, the coordinate of the upper-left

corner of the inset picture with NSPX=0 and NSPY=0

is defined by the registers LINOFFS and PIXOFFS. If

maximal 4x4 inset pictures are used, no new setting of

these

registers

needed.

The

default

setting

LINOFFS=0 and PIXOFFS=0 takes effect. If more than

4x4 inset pictures are involved in a PIP application,

these inset pictures should be grouped, so that the

inset pictures in each group can be addressed by bits

NSPX and NSPY. For writing each group, the registers

LINOFFS and PIXOFFS should be set correctly (see

Fig.5–4).

Fig. 5–2: 4x4 inset pictures with frame

Table 5–2: Limits of the I2C register settings for programming a PIP mode

I2C register

VPCmain

VPCpip and VPCsingle

NPFB

≥ NPIX

main + X, (X=2 for TI and X=0 for rest field memories) and

NPFB x NLINmain ≤ total field memory size

NPIX

0 < NPIX

≤ NPFB - X and

0 < NPIX

≤ NPEL

0 < NPIX

≤ NPELsp

NLIN

NPFB x NLIN

≤ total field memory size and 0

≤ NLIN < NROW

HSTR

≤ HSTR < NPEL

fp - NPIXmain

≤ HSTR < NPEL

sp - NPIXPIP

VSTR

≤ VSTR < NLIN

fp - NLINmain

≤ VSTR < NLIN

sp - NLINPIP

PIXOFFS

not used

≤ PIXOFFS < NPIX

main - (number of pixels

of inset pictures to the right of PIXOFFS)

LINOFFS

not used

≤ LINOFFS < NLIN

main - (number of lines of

inset pictures below LINOFFS)

NSPX

NSPY

(LINOFFS, PIXOFFS)

display window

VPC3232D Datenblatt(PDF) 74 Page - Micronas

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