Sony DMP-1000P, Руководство по обслуживанию, Страница: 59 / 79

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DMP-1000P (AEP)
Pin No. Pin Name I/O Description
44 NC — Not used (open)
45 RESET I Reset signal input from the system controller (IC503) “L”: reset
46 RD I Data read strobe signal input from the system controller (IC503)
47 WR I Data write strobe signal input from the system controller (IC503)
48 ENRW I Not used (open)
49 RSEL I Not used (open)
50 CS I
Chip select signal input from the system controller (IC503)
Signal that makes RD, WR signals of FDC active is input
51 A0 I Address signal input from the system controller (IC503)
52 to 54 NC — Not used (open)
55, 56 GND1 — Ground terminal (digital system)
57 to 60 D0 to D3 I/O
Two-way data bus with the A/D, D/A converter (IC403), system controller (IC503), mechanism
controller (IC505), flash memory (IC506) and D-RAM (IC509)
61 GND3 — Ground terminal (buffer system)
62, 63 D4, D5 I/O
Two-way data bus with the A/D, D/A converter (IC403), system controller (IC503), mechanism
controller (IC505), flash memory (IC506) and D-RAM (IC509)
64 NC — Not used (open)
65 D6 I/O
Two-way data bus with the A/D, D/A converter (IC403), system controller (IC503), mechanism
controller (IC505), flash memory (IC506) and D-RAM (IC509)
66 NC — Not used (open)
67 D7 I/O
Two-way data bus with the A/D, D/A converter (IC403), system controller (IC503), mechanism
controller (IC505), flash memory (IC506) and D-RAM (IC509)
68 DMARQ O
Data transfer request signal in DMA mode is output to the system controller (IC503)
69 DMAAK I
Data register select signal in DMA cycle is input from the system controller (IC503)
70 TC I
Signal showing the completion of data transfer to a floppy disk is input from the system controller
(IC503) (Active when final byte of data is transferred)
71 INT O
Signal notifying that a cause of interruption occurred in host system is output to the system
controller (IC503)
72 FMT I
Not used (fixed at “L”)
73 DR0 I
Not used (fixed at “L”)
74 DR1 I
Not used (fixed at “L”)
75 DR2 I
Not used (fixed at “H”)
76 INDEX I
Signal showing that the head of drive positions at physical start point of tracks on a medium is
input from the floppy disk drive unit
77 NC —
Not used (open)
78 PCS0 I
Not used (fixed at “H”)
79 NC —
Not used (open)
80 PCS1 I
Not used (fixed at “L”)
81 GND3 —
Ground terminal (buffer system)
82 XA1 I
Main system clock input terminal (16 MHz)
83 XA2 O
Main system clock output terminal (16MHz)
84 NC —
Not used (open)
85 GND1 —
Ground terminal (digital system)
86 XB1 I
Clock input terminal
87 XB2 O
Clock output terminal Not used (open)
88 NC —
Not used (open)
89, 90 GND1 —
Ground terminal (digital system)
91 DEN0 O
Value corresponding to the set data transfer rate is output Not used (open)
92 GND3 —
Ground terminal (buffer system)