Block Diagram - Control Unit (Display Section) - Sony XES-Z50 Service Manual

XES-Z50
7-4. BLOCK DIAGRAM – CONTROL UNIT (DISPLAY Section)
ADDRESS BUS
DATA BUS
S-RAM FLASH MEMORY
IC805 IC804
WE 11
OE 28
CE 26
17
WE
41
OE
LB 39
40
UB
CE 6
05
DISPLAY CONTROLLER
IC802 (1/2)
LCD-RX 14
D0 – D15
DATA
LCD-TX 12
4
DSPL-RST
RST
A1 – A18
DSPL-ON 5
96 DEC-CLR
89
DEC-CS
90
DEC-INT
LWR
72
GATE SWITCH
IC807 (1/3)
71
HWR
LB
GATE SWITCH
IC807 (2/3)
UB GATE SWITCH
IC807 (3/3)
70 RD
56
A19
GATE SWITCH
IC803
91 ROM-CS
88 SRAM-CS
EXTAL XTAL
67
66
X802
14.745MHz
B
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DISPLAY CONTROLLER
IC901
LEVEL SHIFT BUFFER
12 TX-LCD
IC509 IC942 (1/2)
DATA
DATA
14 RX-LCD
LEVEL SHIFT
TRANSCEIVER
IC941 63 RES
IC507
RST
A0
36
66 EXTAL
X901
14.745MHz
XTAL
67
BZ811 BUZZER DRIVE
97 BEEP
(BUZZER) Q811
9
LCD-BUSY
2
TIR
LCD-START 8
72 LWR
GATE SWITCH
IC921 (1/3) LCD RST 95
71 HWR
DIMER 85
LB
GATE SWITCH
IC921 (2/3)
CONTR 84
UB
GATE SWITCH
IC921 (3/3) LCD-CS 99
70 RD
90 ROM-CS
88
SRAM-CS
ADDRESS BUS ADDRESS BUS
DATA BUS DATA BUS
S-RAM FLASH MEMORY
IC932 IC931
39 LB
40
UB
6 CE
41 OE
17 WE
26 CE
28 OE
11 WE
LIQUID CRYSTAL
DISPLAY MODULE
SIRCS
SIRCS C
D8 – D15
D0 – D15
LCD-DAT 0
LCD-DAT 7
LCD-CONT
A1 – A19
SWITCHING
LCD-BUSY
IC951 (1/2)
DIMER
CONTR
KEY-
RV801
CONT
D
KEY-CONT
CONTRAST
SWITCHING
LCD-LAT
IC951 (2/2)
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(Page 81)
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