Sony DPP-MS300E, Руководство по обслуживанию

Страница: 61 / 88

5-64
Pin No. Pin Name I/O Description
102 MD1/BOOT I Setting terminal for the CPU operational mode (fixed at “H” in this set)
103 MD0 I
Setting terminal for the CPU operational mode (fixed at “L” in this set)
104 PLL VCC —
Power supply terminal (+5V) (PLL system)
105 PLL CAP I
Connected to capacitor for the PLL
106 PLL VSS —
Ground terminal (PLL system)
107 CK O
System clock signal output to the A/D, D/A converter (IC407) (for INT SG)
108 XRES I
System reset signal input from the reset signal generator (IC501) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
109 G1 O
Card selection signal output for the PC card interface
110 BUZZER O
Buzzer drive signal output terminal
111 IO/XMEM O
Card selection signal output for the PC card interface
112 VCC —
Power supply terminal (+5V)
113
SW (V/C)
I
INPUT SELECT switch (S1719) input terminal
“L”: MEMORY STICK/PC CARD, “H”: VIDEO MOTION or VIDEO STILL
114
FALT
O
Data 0 and data 4 output to the centronics parallel port
115
SELECT
O
Data 1 and data 5 output to the centronics parallel port
116
PERR
O
Data 2 and data 6 output to the centronics parallel port
117 VSS —
Ground terminal
118 KEY0 I
Key input terminal (A/D input) S1706, 1714, 1715, 1718 (PRINT, SAVE VIDEO
(
CARD,
MENU, CLEAR ALL C keys input)
119 KEY1 I
Key input terminal (A/D input) S1707, 1708, 1710 to 1713, 1717 (CAPTURE, PICTURE,
÷
,
¿ , ≥ , ˘ , ENTER keys input)
120 KEY2 I
Rotary switch (S1701) input for the function select
121 HEADTMP I
Temperature detect input from the thermal-head (HEAD901)
122 PPEDG I
Paper edge detection sensor (PH901) input terminal
123 JDET I
Paper jamming detection sensor (PH1861) input terminal
124 AVSS —
Ground terminal (for A/D converter)
125 RMARK0 I
Ribbon mark (0) detection sensor (PH902) input terminal
126 RMARK1 I
Ribbon mark (1) detection sensor (PH903) input terminal
127 AVREF I
Reference voltage (+5V) input terminal (for A/D converter)
128 AVCC —
Power supply terminal (+5V) (for A/D converter)
129 VSS —
Ground terminal
130 TIMER RXD I
Serial receive data input from the timer (IC1700)
131 TIMER TXD O
Serial transmit data output to the timer (IC1700)
132 TIMER SCK O
Serial data transfer clock signal output to the timer (IC1700)
133 RA2 I
Serial receive data input from the external port (normally: pull up)
134 DA O
Serial transmit data output to the external port (normally: pull up)
135 VCC —
Power supply terminal (+5V)
136 NC —
Not used (open)
137 BUSY O
Data 3 and data 7 output to the centronics parallel port
138 STP1 O
Stepping pulse (1) output for the platen motor (M904)
139 STP2 O
Stepping pulse (2) output for the platen motor (M904)
140 STP3 O
Stepping pulse (3) output for the platen motor (M904)
141 VSS —
Ground terminal
142 STP4 O
Stepping pulse (4) output for the platen motor (M904)
143 RAS-CNT O
Selection signal output of the row address strobe signal
144 C-BUSY I
Busy signal input from the centronics parallel port