Detail Block Diagram (1/3) - Panasonic TY-TP65P8-S Service Manual

TY-TP65P8-S / TY-TPEN6

10.2. Detail Block Diagram (1/3)

Signal explanations
Signal
6
AD0~AD6
SEL1~5
5
RANGE1~2
PHOUT1~5
LEDON
4
3
2
P1
IR Ray
TOUCH
PHOTO-
PEN
TRANSISTOR
1
PEN RECEIVE BOARD
A B
Function
Address signals to switch LEDs and phototransistors.
Selection signals for the LED and phototransistor boards. (active LOW)
SEL1: Selects Y-LED 1 and CPU/Y-PHOTO 1
SEL2: Selects Y-LED 2 and Y-PHOTO 2
SEL3: Selects X-LED 1 and X-PHOTO 1
SEL4: Selects X-LED 2 and X-PHOTO 2
SEL5: Selects X-LED 3 and X-PHOTO 3
Signal to change phototransistor gain.
Phototransistor output signal (analogue voltage) output from each
phototransistor board.
Signal to light IR-LED. (active LOW)
TOUCH PEN mode switch
ON (TOUCH PEN)
SW2
OFF (HANDWRITING)
U5
+5V
POWER
SW
J8
U2
1 +5VIN
2 D-
USB
3 D+
USB-RS232C
U4
EEPROM CONVERTER
U6
12MHz
PIC12F629
J1 J3
2 2 2 2 IRDATA
PEN-USB BOARD
C D
PHOTO-
TRANSISTOR
MATRIX
U1
8ch
ANALOG
MULTIPLEXER
U3
OUTLIGHT
CANCEL,
GAIN
CONTROL
U2, U4
Y-PHOTO 2 BOARD
5V
+
Vref
U2
J1 J2
4 4 PENMODE
U5
9 9 TXDOUTO
RS232C
10 10 RXDOUTO
11 11 TXD1
DRIVER
12 12 RXD1 CPU
5 5 PENSW1
20MHz
6 6 PENSW2
7 7 R-OUT1
8 8 R-OUT2
RES WCK
U1
RESET
IC
CPU/Y-PHOTO 1 BOARD
E F
46
U5
AD3-AD6
3 TO 8 LINE
DECODER
U6
AD3-AD6
3 TO 8 LINE
DECODER
AD0-AD2
SEL2
RANGE1,2
LEDON
PHOUT2
J6
J5
U11
3 TO 8 LINE
DECODER
PHOTO-
AD3-
TRANSISTOR
U3
AD6 U10
MATRIX
3 TO 8 LINE
BUFFER
DECODER
AD3-
AD6
U6
U4
AD0-AD2
SEL1 8ch
ANALOG
BUFFER
MULTIPLEXER
U7
LEDON
OUTLIGHT
CANCEL,
GAIN
CONTROL
RANGE1,2
U8, U9
PHOUT1
G H
J7
AD0 1 1
AD1 2 2
AD2 3 3
AD3 4 4
AD4 5 5
AD5 6 6
AD6 7 7
RANGE1 RANGE1 21 21 18
RANGE2 RANGE2 19 22 22
SEL1 SEL1 13
SEL2 SEL2 14
SEL3 SEL3 15
SEL4 SEL4 16
SEL5 17
LEDON 8
PHOUT3 10 10
PHOUT4 11
PHOUT5 12
I