z86230 ZiLOG Semiconductor, z86230 Datasheet - Page 42

• Manufacturer Part Number: z86230
• Description: Advanced Violence Blocking And Ntsc Line 21 Xds
• Manufacturer: ZiLOG Semiconductor

7.
7.1 C
7.2 I
7.3 IICO P
42
DEMONSTRATION PROGRAMS
2
OMMUNICATING WITH THE
C O
PERATION
ROGRAM
D
EMONSTRATION
Communications with the Z86230 is accomplished using its serial communica-
tions interface (it is assumed that the user is familiar with the serial protocol
requirements).
N
The Z86230 is configurable as an I
the Z86230 through its parallel port. Though these programs are not intended as
examples of how to program the application they do provide a means of illustrat-
ing the serial control process and capability of the Z86230.
The three programs available are titled
grams compile and run satisfactorily with the Z86230 in a test board. Compiled
versions are available on disk. Contact your local ZiLOG sales office for further
information on these programs.
This program sends 1 byte to the Z86230 without checking the status of the
bit. The program returns the contents of the Serial Status Register (
command is entered. When the program is active the screen displays:
The user may enter any valid 1-byte command such as
(
the
This example shows that the
indicate that the
port is ready for further input, that the input video signal was in Field 1 at the time
the status was read, and that the part is operating in video lock mode.
The
For example, entering the following two 1-byte commands displays the following:
Reset the part
NOP
OTE
SSR
IIC Command Byte >
IIC Byte = 00
IIC Status = 83h
IICO
:
) and then hit the
In the following descriptions, <ENTER> means “press the Enter key”.
contents as follows:
P
program is exited by entering a Control+C (^C) character.
ROGRAMS
Z86230
Z86230—PRELIMINARY
RDY
,
FB, 00
FLD
ENTER
, and
NOP
key. The screen then displays the byte entered and
LOCK
command was entered. The
2
C slave device. The PC communicates with
bits are High, which implies that the serial
IICO
,
SCRIPTI
C
OMMUNICATING WITH THE
and
FBh
XDSCAP
PS000400-TVC0499
(
SSR
RESET
SSR
contents,
. These pro-
) or
) after the
00h
Z86230
RDY
83h
,