Read Sharp LC-20B6E (serv.man10) Service Manual online
38
LC-20B6E
Pin Type
Block
Number
of Pins
Pin Name
I/O Type
Description
OSDYsA in
I
D
OSD-Ys signal input
OSDRB (d1b) in
I
D
OSD-R (data-1b) signal input
OSDGB (d2b) in
I
D
OSD-G (data-2b) signal input
OSDBB (d3b) in
I
D
OSD-B (data-3b) signal input
OSDIB (d4b) in
I
D
OSD-I (data-4b) signal input
OSDYsB in
I
D
OSD-Ys signal input
OSD VD out
O
D
VD output for OSD microcomputer
OSD HD out
O
D
HD output for OSD microcomputer
OSD CLK
I/O
D
Clock input/output (positive polarity) for OSD
microcomputer
microcomputer
OSD OSD
I/F
14
OSD n-CLK
I/O
D
Clock input/output (negative polarity) for OSD
microcomputer
microcomputer
DTMB
I
D
DRAM test mode input
DTCLK
I
D
DRAM test clock input
DRAM1 VDD1
VDD
1.5-V VDD for 4M DRAM
DRAM1 GND1
GND
1.5-V ground for 4M DRAM
DRAM1 VDD2
VDD
1.5-V VDD for 4M DRAM
DRAM1 GND2
GND
1.5-V ground for 4M DRAM
DRAM1 VDD3
VDD
2.5-V VDD for 4M DRAM
DRAM1 GND3
GND
2.5-V ground for 4M DRAM
DRAM2 VDD1
VDD
1.5-V VDD for 20M DRAM
DRAM2 GND1
GND
1.5-V ground for 20M DRAM
DRAM2 VDD2
VDD
1.5-V VDD for 20M DRAM
DRAM2 GND2
GND
1.5-V ground for 20M DRAM
DRAM2 VDD3
VDD
1.5-V VDD for 20M DRAM
DRAM2 GND3
GND
1.5-V ground for 20M DRAM
DRAM2 VDD4
VDD
1.5-V VDD for 20M DRAM
DRAM2 GND4
GND
1.5-V ground for 20M DRAM
DRAM2 VDD5
VDD
1.5-V VDD for 20M DRAM
DRAM2 GND5
GND
1.5-V ground for 20M DRAM
DRAM2 VDD6
VDD
2.5-V VDD for 20M DRAM
DRAM DRAM
20
DRAM2 GND6
GND
2.5-V ground for 20M DRAM
RED1 [7]
O
D
RED1 [6]
O
D
RED1 [5]
O
D
RED1 [4]
O
D
RED1 [3]
O
D
RED1 [2]
O
D
RED1 [1]
O
D
B/E LCD
I/F
53
RED1 [0]
O
D
R signal output 1 (8-bit)
2.2. Pin Functions (Continued)
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