21
CLP-970/CLP-970M/CLP-970C/CLP-970A/CLP-970AM/CLP-970AC
HD63266F (XI939A00) FDC (Floppy Disk Controller)
DM: IC002
PIN
NAME
I/O
FUNCTION
PIN
NAME
I/O
FUNCTION
NO.
NO.
1
8"//5"
I
Data transmission speed
33
/TRKO
I
Track 00 signal
2
XTALSET
I
Clock select
34
/INDEX
I
Index signal
3
/RESET
I
Rest
35
/RDATA
I
Read data input from FDD
4
E//RD
I
Enable/Read
36
XTAL2
Clock
5
RW//WR
I
Read/write/Write
37
EXTAL2
6
/CS
I
Chip select
38
NC
7
/DACK
I
DMA acknowledge
39
XTAL1
Clock
8
RS0
I
Register select
40
EXTAL1
9
RS1
I
41
VSS4
Ground
10
VSS1
Ground
42
VSS5
11
VSS2
43
NC
12
D0
I/O
44
VCC2
13
D1
I/O
45
VCC3
Power supply
14
D2
I/O
46
VCC4
15
D3
I/O
Data bus
47
/WGATE
O
Write control
16
D4
I/O
48
/WDATA
O
Writ data to FDD
17
D5
I/O
49
VSS6
Ground
18
D6
I/O
50
/STEP
O
Step signal to control head of FDD
19
D7
I/O
51
/HDIR
O
Direction
20
/DREQ
O
DMA request
52
/HLOAD
O
Head load
21
/IRQ
O
Interrupt request
53
/HSEL
O
Head select
22
/DEND
I
Data end
54
VSS7
Ground
23
VSS3
Ground
55
/DS0
O
24
1/2 EX1
56
/DS1
O
Drive select
25
VCC1
Power supply
57
/DS2
O
26
NUM1
I
58
/DS3
O
27
NUM3
I
59
VSS8
Ground
28
IFS
I
Host interface select
60
/MON0
O
29
SFORM
I
Format data
61
/MON1
O
Motor on
30
/INP
I
Index pulse
62
/MON2
O
31
/READY
I
Ready from FDD
63
/MON3
O
32
/WPRT
I
Write control signal
64
VSS9
Ground
MBCG46183-129 (XV833A00) GATE ARRAY
DM: IC004
PIN
NAME
I/O
FUNCTION
PIN
NAME
I/O
FUNCTION
NO.
NO.
1
D5
I/O
25
TX31
O
2
D6
I/O
Data bus
26
RX32
I
3
D7
I/O
27
TX32
O
Serial data
4
/IRQ0
I/O
Interrupt request
28
RX33
I
5
/IRQ1
I/O
Interrupt request
29
TX33
I/O
6
VSS6
Ground
30
/IC
I
Initial Clear
7
/IRQ2
I/O
Interrupt request
31
VSS31
Ground
8
/IRQ3
I/O
Interrupt request
32
XI
I
Crystal quarts input
9
/RD
I
Read
33
VSS33
Ground
10
/WR
I
Write
34
XO
O
Crystal quarts output
11
/CE
I
Chip enable
35
A0
I
12
/ASTB
I
36
A1
I
13
TESTI0
I
Test mode
37
A2
I
14
RX0
I
38
A3
I
Address bus
15
TX0
O
39
A4
I
16
RX1
I
Serial data
40
A5
I
17
TX1
O
41
CPUCLK
I
Clock
18
VSS18
Ground
42
VSS42
Ground
19
VDD19
Power supply
43
VDD43
Power supply
20
RX2
I
44
D0
I/O
21
TX2
O
45
D1
I/O
22
RX30
I
Serial data
46
D2
I/O
Data bus
23
TX30
O
47
D3
I/O
24
RX31
I
48
D4
I/O
PCM1702U/2K (XP551A00) DAC (Digital to Analog Converter)
DM: IC010
PIN
NAME
I/O
FUNCTION
PIN
NAME
I/O
FUNCTION
NO.
NO.
1
DATA
I
Data input
11
+VCC
Power supply (+5 V)
2
CLK
I
Clock
12
BPO
Bipolar de-couple
3
NC
13
NC
4
+VDD
Power supply (+5 V)
14
IOUT
O
Output current
5
D.GND
Digital ground
15
A.GND
Analog ground
6
-VDD
Power supply (-5 V)
16
A.GND
Analog ground
7
L.E
I
Latch enable
17
SERV
Servo de-couple
8
NC
18
NC
9
NC
19
REF
Reference de-couple
10
NC
20
-VCC
Power supply (-5 V)