Yamaha CLAVINOVA CVP-105 Service Manual page 14

CVP-105
MN101C027YB (XS711200) CPU
PIN
NAME I/O
NO.
1 S1 I
2 S2 I
3 S3 I
4 S4 I
5 S5 I
6 VREF+ -
7 VDD -
8 O SC2 O
9 OSC1 I
10 VSS -
11 XI I
12 XO O
13 MMOD I
14 RD0 O
15 RXD I
16 D0 O
17 D1 O
18 D2 O
19 D3 O
20 D4 O
21 /RST I
22 D5 O
23 D6 O
24 D7 O
25 D8 O
26 D9 O
27 S6 I
28 S7 I
29 S8 I
30 S9 I
31 S10 I
32 S11 I
HD63266F (XI939A00) FDC (Floppy Disk Controller)
PIN
NAME I/O
NO.
1 8"//5" I
2 XTALSET I
3 /RESET I
4 E//RD I
5 RW//WR I
6 /CS I
7 /DACK I
8 RS0 I
9 RS1 I
10 VSS1
11 VSS2
12 D0 I/O
13 D1 I/O
14 D2 I/O
15 D3 I/O
16 D4 I/O
17 D5 I/O
18 D6 I/O
19 D7 I/O
20 /DREQ O
21 /IRQ O
22 /DEND I
23 VSS3
24 1/2 EX1
25 VCC1
26 NUM1 I
27 NUM3 I
28 IFS I
29 SFORM I
30 /INP I
31 /READY I
32 /WPRT I
14
FUNCTION
Switch matrix data
Power supply (+5 V, analog)
Power supply (+5 V)
Crystal oscillator (8 MHz)
Crystal oscillator (8 MHz)
Ground
Not used
Not used
Memory mode select (Grounded)
Rotary encoder data
MIDI receive data
LED and switch drive data
Reset
LED and switch drive data
Switch matrix data
FUNCTION
Data transmission speed
Clock select
Rest
Enable/Read
Read/write/Write
Chip select
DMA acknowledge
Register select
Ground
Data bus
DMA request
Interrupt request
Data end
Ground
Power supply
Host interface select
Format data
Index pulse
Ready from FDD
Write control signal
PIN
NAME I/O
NO.
33 S12 I
34 S13 I
35 S14 I
36 TXD O
37 S15 I
38 S16 I
39 S17 I
40 S18 I
41 L16 O
42 L17 O
43 L18 O
44 L19 O
45 L8 O
46 L9 O
47 L10 O
48 L11 O
49 L12 O
50 L13 O
51 L14 O
52 L15 O
53 L7 O
54 L6 O
55 L5 O
56 L4 O
57 L3 O
58 L2 O
59 L1 O
60 L0 O
61 VREF -
62 AD0 I
63 AD1 I
64 S0 I
PIN
NAME I/O
NO.
33 /TRKO I
34 /INDEX I
35 /RDATA I
36 XTAL2
37 EXTAL2
38 NC
39 XTAL1
40 EXTAL1
41 VSS4
42 VSS5
43 NC
44 VCC2
45 VCC3
46 VCC4
47 /WGATE O
48 /WDATA O
49 VSS6
50 /STEP O
51 /HDIR O
52 /HLOAD O
53 /HSEL O
54 VSS7
55 /DS0 O
56 /DS1 O
57 /DS2 O
58 /DS3 O
59 VSS8
60 /MON0 O
61 /MON1 O
62 /MON2 O
63 /MON3 O
64 VSS9
PNL : IC001
FUNCTION
Switch matrix data
MIDI transmit data
Switch matrix data
LED drive data
LED and switch drive data
Grounded
Analog input
Analog input
Switch matrix data
DM : IC700
FUNCTION
Track 00 signal
Index signal
Read data input from FDD
Clock
Clock
Ground
Power supply
Write control
Writ data to FDD
Ground
Step signal to control head of FDD
Direction
Head load
Head select
Ground
Drive select
Ground
Motor on
Ground