Sharp UP-3300 Service Manual page 51

2-8. VGA controller (MN89303A)
1) Pin Configuration
XIN
GND
AEN
/SBEH
/IOWR
/IORD
/SMEMW
/SMEMR
A21
A20
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
/BIOSEN
/REFRESH
2) Block diagram
ADDRESS[21:0]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Gray scale
UD[7:0]
LD[7:0]
83
BACKON
84
LCD panel
LCDON
85 controller
LOGICON
63
LP
64
FO
62
DISP
61
DCLK
1
XIN
124
RESET
126/125
TEST/MINTEST
SD[15:0]
3
AEN
4
SBHE
5
IOWR
6
IORD
Host
7
interface
SMEMW
8
SMEMR
56
IOCHRDY
32
REFRESH
57
MEMCS16
58
IOCS16
RAM table
engine
Hardware
cursor
Attributer
Video FIFO
LCD/CRT
controller
Mmory
interface
Access
attributer
Memory
write
Guraphics
buffer
controller
7 – 18
96 MA1
95 MA2
94 MA3
93 MA4
92 MA5
91 MA6
90 MA7
89 MA8
88 MA9
VDD
87
86 GND
LOGICON
85
84 LCDON
BACKON
83
82 LD0
LD1
81
80 LD2
LD3
79
78 LD4
LD5
77
76 LD6
LD7
75
74 VDD
GND
73
72 UD0
UD1
71
70 UD2
UD3
69
68 UD4
UD5
67
66 UD6
65 UD7
MA[9:0]
MD[15:0]
100
RAS
101
UCAS
102
LCAS
103
WE
31
BIOSEN