Yamaha DISKLAVIER MX1Z Service Manual page 15

HD63266F (XI939A00) FDC (Floppy Disk Controller)
PIN
NAME I/O
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
SCI (XS345A00) CPU
PIN
NAME I/O
NO.
1 D0 I/O Data 0
2 /WR O /WR
3 /RD O /RD
4 /S I Chip Enable
5 BM I Fixed to Low
6 INTR O IRQ Request
7 RxD3 I Receive data CH 3
8 TxD3 O Transmit data CH 3
9 RxD2 I Receive data CH 2
10 TxD2 O Transmit data CH 2
11 RxD1 I Receive data CH 1
12 TxD1 O Transmit data CH 1
13 P16 I Remote control data 6
14 P15 I Remote control data 5
15 P14 I Remote control data 4
16 P13 I Remote control data 3
17 P12 I Remote control data 2
18 CNVss - GND
19 /RES I Reset
20 INT I Not used
21 P10 I Remote control data1
22 XIN I 8 MHz
23 XOUT O NC
24 Vss - GND
25 PO7 I Panel switch read 7
26 PO6 I Panel switch read 6
27 PO5 I Panel switch read 5
28 PO4 I Panel switch read 4
29 PO3 I Panel switch read 3
30 PO2 I Panel switch read 2
31 PO1 I Panel switch read 1
32 PO0 I Panel switch read 0
FUNCTION
FUNCTION
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.
33 PB7 O NC
34 PB6 O NC
35 PB5 O Panel matrix sink 5
36 PB4 O Panel matrix sink 4
37 PB3 O Panel matrix sink 3
38 PB2 O Panel matrix sink 2
39 PB1 O Panel matrix sink 1
40 PB0 O Panel matrix sink 0
41 PA7 O Panel matrix source 7
42 PA6 O Panel matrix source 6
43 PA5 O Panel matrix source 5
44 PA4 O Panel matrix source 4
45 PA3 O Panel matrix source 3
46 PA2 O Panel matrix source 2
47 PA1 O Panel matrix source 1
48 PA0 O Panel matrix source 0
49 A7 I Address 7
50 A6 I Address 6
51 A5 I Address 5
52 A4 I Address 4
53 A3 I Address 3
54 A2 I Address 2
55 A1 I Address 1
56 A0 I Address 0
57 Vcc - +5
58 D7 I/O Data 7
59 D6 I/O Data 6
60 D5 I/O Data 5
61 D4 I/O Data 4
62 D3 I/O Data 3
63 D2 I/O Data 2
64 D1 I/O Data 1
MX1Z
EMK-CTL: IC202
FUNCTION
EMK-CTL: IC306
FUNCTION
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