Yamaha Clavinova CVP-205 Service Manual page 27

CVP-205/CVP-205M
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
YMZ702-D (XR632A00) KSN2 (Key Scanner)
PIN
NAME I/O
NO.
1 BK5 O
2 BK4 O
3 BK3 O
Key block (open drein)
4 BK2 O
5 BK1 O
6 BK0 O
7 MK15 I
8 MK14 I
9 MK13 I
First make contact
10 MK12 I
11 MK11 I
12 MK10 I
13 MK05 I
14 MK04 I
15 MK03 I
Second make contact
16 MK02 I
17 MK01 I
18 MK00 I
19 XIN I Crystal osc. input (4 MHz)
20 XOUT O Crystal osc. output (4 MHz)
27
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.
21 GND Ground
22 VDD Power supply
23 SO O Serial data
24 ACK I Acknowledge/mode select
25 XCK I Clock for serial data
26 /IC I Initial clear
27 TST1 I Test mode
28 TST2 I (L,L: normal mode, others: test)
29 XCKINH I Inhibit of serial clock
30 BK14 O
31 BK13 O
32 BK12 O
33 BK11 O
34 BK10 O
Key block (open drein)
35 BK9 O
36 BK8 O
37 BK7 O
38 BK6 O
39 GND Ground
40 VDD Power supply
DM: IC009
FUNCTION
GH-DclSW L: IC KSN2
FUNCTION