Sony DMP-1000P, Руководство по обслуживанию, Страница: 55 / 79

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Confidential
DMP-1000P (AEP)
Pin No. Pin Name I/O Description
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 FDD DMA RQ I DMA request signal input from the floppy disk drive controller (IC2101)
110 BUZZER O Buzzer drive signal output terminal
111 G2 O Not used (open)
112 VCC — Power supply terminal (+5V)
113
FDD DRIVE
SELECT 0
O
Drive select 0 control signal output to the floppy disk drive unit
114
FDD DISK
CHANGE
I Disk change control signal input from the floppy disk drive unit
115
FDD DENSITY
OUT
O Density control signal output to the floppy disk drive unit
116
FDD MOTOR
ON
O Motor on/off control signal output to the floppy disk drive unit
117 VSS — Ground terminal
118 KEY0 I
Key input (A/D input) or REMOTE CAPTURE jack input terminal S1706, 1714, 1715, 1718
(PRINT, SAVE VIDEO
B
FD, CLOCK SET, CLEAR ALL C keys input)
119 KEY1 I
Key input (A/D input) or REMOTE CAPTURE jack input terminal
S1707, 1708, 1710 to 1713, 1717 (CAPTURE, PICTURE,
g
,
G
,
f
,
F
, 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 EEPROM RXD I
Serial receive data input from the EEPROM (IC2002)
134 EEPROM TXD O
Serial transmit data output to the EEPROM (IC2002)
135 VCC —
Power supply terminal (+5V)
136 EEPROM SCK O
Serial clock signal output to the EEPROM (IC2002)
137 FDC TC O
Terminal count signal output to the floppy disk drive controller (IC2101)
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 FDD READY IN I
Ready signal input from the floppy disk drive controller (IC2101)