z86131 ZiLOG Semiconductor, z86131 Datasheet - Page 54

• Manufacturer Part Number: z86131
• Description: Ntsc Line 21 Decoder
• Manufacturer: ZiLOG Semiconductor

Z86129/130/131
NTSC Line 21 Decoder
DEMONSTRATION PROGRAMS (Continued)
Text display modes and the proper command code to acti-
vate them.
XDS Display Mode and 16 Second Erase
Timer Commands(Z86129 Only)
XDS DISP = 20hÐ27h.
byte commands. These commands control the selection of
XDS display modes and the state of the 16 Second Erase
Timer. The 16 Second Erase Timer is active only for Cap-
tion and XDS display modes. The 16 Second Erase Timer
has no affect on TEXT mode displays.
SCRIPTI Program
This program is designed to send any number of one or two
byte commands to the Z86129/130/131. The list of com-
mands to be executed are contained in Script files that have
the extension
in the following paragraphs. SCRIPTI can be used to control
the display modes in the same manner as the IICO program
except that the one byte command to be sent must be in a
Script file. For example a file called CC1.SER (Z86129
only) would contain the one byte command:
The program is invoked by typing:
54
Note:
Timer has no affect on the current display mode in operation.
CPTX Command
ERASE TIMER
XDS Display
16 SECOND
Command
{17}* send CC1, decoder ON
SI File_name<ENTER>
XDSG
XDSF
CC1
CC2
CC3
CC4
Changing the ON/OFF state of the 16 Second Erase
T1
T2
T3
T4
.SER
. Examples of such files are is presented
16 Sec Tmr ON
Decoder ON
XDS Display Command Code
XDS Display commands are one
CPTX Command Code
1Dh
1Bh
17h
15h
1Fh
13h
19h
11h
23h
21h
20h
16 Sec Tmr OFF
Decoder OFF
1Eh
1Ch
16h
14h
12h
10h
27h
25h
24h
1A
18
P R E L I M I N A R Y
Note: File_name without the .SER extension.
The screen displays:
The responding slave address is reported to the screen.
When all the commands in the file have been successfully
sent to the Z86129/130/131, the PC returns to the system
prompt.
The program checks the RDY status before sending each
byte. If, during the entry of a command, the RDY bit is not
found to be a “one” after an extended wait, the program re-
ports the contents of the SS register and then continue
checking for RDY.
Script Files
Script files can be generated to perform all of the setup and
control functions required to use the part in an application.
The script files that follow are examples of such files used
to setup the Z86129/130/131 for different operating condi-
tions. Some of the files contain only a single command
while others include several commands. The user should re-
fer to the Commands and Internal Registers sections, pages
29 and 33, respectively, for details. Although the following
examples are organized according to a particular register,
some of the files contain information for several registers.
Configuration Register Script Files (OSD-Related
Configurations Are For Z86129 Only))
File Name
FIGM
FIGVH
FIGN
FIGPAL
EEG CCD2 Serial Interface Script Player Version
x.xx
Slave Address is 28h
Script File Done
COMMAND
{xxh,yyh}
{c0,02}
{c7,00}
{c0,0c}
{83,12}
{c2,1d}
{c0,00}
{c2,26}
{c1,d2}
Comments
*set conÞg to mono
*set INT Mask register clear
*set conÞg to ext VLK & HLK
*bit set ext V pulse for pos
*center h display
*set conÞg back to default
state
*return h display to center
*change display register to
C15 & T15
DS007200-TVX0199
ZiLOG