Read Sharp DV-NC55 (serv.man11) Service Manual online
63
DV-NC55S/H
DV-NC60H
DV-NC60H
12-5. IC508 IX1761GE
TRACK BUFFER INTERFACE
Pin No.
Terminal name
I/O
Operation function
1
VDD1
Supply
Digital power supply +3.3V
2
HADR0
Input
CPU Address bus
3
HADR1
Input
CPU Address bus
4
HADR2
Input
CPU Address bus
5
HADR3
Input
CPU Address bus
6
HADR4
Input
CPU Address bus
7
HADR5
Input
CPU Address bus
8
HADR6
Input
CPU Address bus
9
HADR7
Input
CPU Address bus
10
VSS
Supply
Digital GND
11
VDD1
Supply
Digital power supply +3.3V
12
HDAT0
In/Output
CPU Data bus
13
HDAT1
In/Output
CPU Data bus
14
HDAT2
In/Output
CPU Data bus
15
HDAT3
In/Output
CPU Data bus
16
HDAT4
In/Output
CPU Data bus
17
HDAT5
In/Output
CPU Data bus
18
HDAT6
In/Output
CPU Data bus
19
HDAT7
In/Output
CPU Data bus
20
HRD
Input
CPU Read signal
21
HWR
Input
CPU write signal
22
HAS
Input
CPU address strobe
23
HCS1
Input
CPU chip select signal 1 (Track Buffer Operation)
24
HCS2
Input
CPU chip select signal 2 (bus Voltage Transfer)
25
VSS
Supply
Digital GND
26
VDD1
Supply
Digital power supply +3.3V
27
HWAIT
Output
CPU wait signal (Open drain)
28
HINT
Output
CPU interrupt signal (Open drain)
29
VSS
Supply
Digital GND
30
PDO[0]
Output
Output DVD/CDdata
31
PDO[1]
Output
Output DVD/CDdata
32
PDO[2]
Output
Output DVD/CDdata
33
PDO[3]
Output
Output DVD/CDdata
34
PDO[4]
Output
Output DVD/CDdata
35
PDO[5]
Output
Output DVD/CDdata
36
PDO[6]
Output
Output DVD/CDdata
37
PDO[7]
Output
Output DVD/CDdata
38
PDO[8]
Output
Output DVD/CDdata
39
VSS
Supply
Digital GND
40
VDD1
Supply
Digital power supply +3.3V
41
PSYCO
Output
Output data selector sync signal
42
PDRQO
Output
Output data transfer block signal
43
PDCKO
Output
Output data transfer clock
44
VSS
Supply
Digital GND
45
VDD2
Supply
Digital power supply +5V
46
DVDREQ
Input
Request signal input
47
PDCKI
Input
Input data transfer clock
48
PDRQI
Input
Input data transfer block signal
49
PSYCI
Input
Input data selector sync signal
50
VSS
Supply
Digital GND
51
VDD2
Supply
Digital power supply +5V
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