Yamaha Clavinova CLP-970 Service Manual page 21

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