Z8622912 Datasheet, PDF (28/52 Pages) Zilog, Inc. – NTSC LINE 21 CCD DECODER

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The WRITE commands require two bytes to execute. The
first byte is the write command. This byte includes the
Z86229 register address (AD00:04). The second byte is the
data to be written.
OSD Display Mode Commands
OSD commands are one and two-byte commands. They are
used to control the loading of data for OSD display and their
ZiLOG
presentation to the screen. Normally, the OSD display mode
uses 15 TV lines per display row to enhance the screen ap-
pearance. The following tables summarize the single- and
two-byte control commands for the Z86229 On-Screen Dis-
play.
%QOOCPF 0COG
4'6740
%.4'
6':65'6
2125'6
(.+2
1'&/
1'0/
Table 15. Single-Byte OSD Display Mode Commands
%QFG %QOOCPF (WPEVKQP
J
%CTTKCIG TGVWTP HQT 15& YJGP KP 6':65'6 OQFG
J
15& GSWKXCNGPV QH FGNGVG VQ GPF QH TQY &'4
J
'UVCDNKUJGU C 6GZV V[RG QH 15& FKURNC[
J
'UVCDNKUJGU C RQR QP V[RG QH 15& FKURNC[
J
15& GSWKXCNGPV QH RQR QP ECRVKQP GPF QH ECRVKQP '1%
J
15& GSWKXCNGPV QH GTCUG FKURNC[GF OGOQT[
J
15& GSWKXCNGPV QH GTCUG PQP FKURNC[GF OGOQT[
%QOOCPF 0COG
212 419 5'. YKVJ
&QWDNG *KIJ 1RVKQP
2*;5 419 5'.
%74514 5'6
94+6' %*#4
94+6' /#2
94+6' %*#4 &$. 9+&'
9#+6
Table 16. Two-Byte OSD Display Mode Commands
(KTUV $[VG
#J
#J
#J
#J
#J
#J
#J
5GEQPF $[VG
TTJ
TTJ
EEJ
FFJ
TTJ
FFJ
PPJ
%QOOCPF (WPEVKQP
6JKU EQOOCPF UGVU VJG FKURNC[ TQY CPF OQXGU VJG EWT
UQT VQ EJCT EQNWOP  6JG NQY QTFGT PKDDNG QH rr FGUKI
PCVGU VJG FKURNC[ TQY $KV  QH rr URGEKHKGU C &QWDNG *KIJ
TQY (QT GZCORNG TT'J YQWNF UGNGEV FKURNC[ TQY 
TTJ YQWNF UGNGEV FKURNC[ TQY VJTGG &QWDNG *KIJ
6JKU EQOOCPF UGVU VJG RJ[UKECN TQY YJGTG VJG NQY
QTFGT PKDDNG QH rr FGUKIPCVGU VJG RJ[UKECN TQY rr ECP DG
CP[ XCNWG HTQO J VQ (J
6JKU EQOOCPF RNCEGU VJG EWTUQT CV VJG EJCTCEVGT EQN
WOP RQUKVKQP FGUKIPCVGF D[ EE YJKEJ ECP DG CP[ XCNWG
HTQO J VQ J EQNWOP   <GTQ KU VJG 2#% URCEG
6JKU EQOOCPF YTKVGU VJG FCVC D[VG FF VQ VJG EWTTGPV
EWTUQT NQECVKQP CPF VJGP KPETGOGPVU VJG EWTUQT
6JKU EQOOCPF OCRU VJG EWTTGPV RJ[UKECN TQY VQ VJG FKU
RNC[ TQY FGUKIPCVGF D[ VJG NQY PKDDNG QH VJG rr D[VG $KV
 QH TT GPCDNGU FKURNC[ QH VJG TQY $KV  QH TT KPFK
ECVGU C &QWDNG *KIJ TQY
6JKU EQOOCPF KU VJG UCOG CU VJG # EQOOCPF DWV
URGEKHKGU C &QWDNG 9KFG EJCTCEVGT
6JKU EQOOCPF UGVU VJG 4&; DKV QH 55 UWURGPFKPI VJG
UGTKCN EQOOCPF GZGEWVKQP HQT CRRTQZKOCVGN[ VJG PWODGT
QH HTCOGU FGUKIPCVGF D[ VJG PP D[VG
Figure 17 illustrates the two different character sets, Graph- Graphics Character set is in force when the OSD display is
ics or Extended, that share the address space C0h–FFh. The in Drop-Shadow mode (the default condition).

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