Sharp 28JS-74SS, Руководство по обслуживанию

Страница: 56 / 84

56
28JS-74S
TVTEXT
PRO
SDA
5
5
x
x
R
(0
.5 V
pp ...1.2 V
pp)
G
(0
.5 V
pp ...1.2 V
pp)
B
(0
.5 V
pp ...1.2 V
pp)
R
G
B
BL
A
N
K
(3
.3
V
)
BL
ANK/
CO
R
CV
BS
(1
.2
V
pp)
CVBS
100 nF
S
andcast
le
(m
ax
. 2.5 V
)
XTAL
2
XTAL
1
HS/SC
+
3
.3
V
+
2
,5
V
+
2
,5
V
VDD3
.3
VDD2
.5
(R
GB
)
VDD2
.5
(A
DC)
P
o
rt 0
P
o
rt 1
P
o
rt 2
(m
ax
. 2.5 V
)
P
o
rt 3
P
o
rt 4
Up
to
1
M
byt
e
Pr
ogr
am
M
em
or
y
(115ns
)
8 8 4 8
3...6
8 bit Data B us
Addr ess B us
+
3
.3
V
RST#
PSEN
6 MH
z
2 x
33 pF
S
D
A
5550
onl
y
SDA5550 (IC6001)
Logic Symbol
Application Diagram
T
V
T
EXT
PRO
v
c
c
(2.
5,
3.
3)
v
ss
XT
AL
1
XT
AL
2
ST
O
P
ENE OCF
CVBS PSEN
R
G
B
BL
A
N
K/CO
R
HSY
NC/SSC
VSYNC
RD
WR
A
ddress
20 bi
t
Data
8 bi
t
P
o
rt 0
8 bi
t
P
o
rt 1
8 bi
t
P
o
rt 2
4 bi
t
P
o
rt 3
8 bi
t
P
o
rt 4
6 bi
t
RST
AL
E