Yamaha Clavinova CVP-105, Service Manual

Page: 14 / 93

CVP-105
14
HD63266F (XI939A00) FDC (Floppy Disk Controller)
PIN
NO.
NAME I/O FUNCTION
PIN
NO.
NAME I/O FUNCTION
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
DM : IC700
1 S1 I 33 S12 I
2 S2 I 34 S13 I Switch matrix data
3 S3 I Switch matrix data 35 S14 I
4 S4 I 36 TXD O MIDI transmit data
5 S5 I 37 S15 I
6 VREF+ - Power supply (+5 V, analog) 38 S16 I
Switch matrix data
7 VDD - Power supply (+5 V) 39 S17 I
8 SC2 O Crystal oscillator (8 MHz) 40 S18 I
9 OSC1 I Crystal oscillator (8 MHz) 41 L16 O
10 VSS - Ground 42 L17 O
11 XI I Not used 43 L18 O
12 XO O Not used 44 L19 O
13 MMOD I Memory mode select (Grounded) 45 L8 O
14 RD0 O Rotary encoder data 46 L9 O
LED drive data
15 RXD I MIDI receive data 47 L10 O
16 D0 O 48 L11 O
17 D1 O 49 L12 O
18 D2 O LED and switch drive data 50 L13 O
19 D3 O 51 L14 O
20 D4 O 52 L15 O
21 /RST I Reset 53 L7 O
22 D5 O 54 L6 O
23 D6 O 55 L5 O
24 D7 O LED and switch drive data 56 L4 O
LED and switch drive data
25 D8 O 57 L3 O
26 D9 O 58 L2 O
27 S6 I 59 L1 O
28 S7 I 60 L0 O
29 S8 I
Switch matrix data
61 VREF - Grounded
30 S9 I 62 AD0 I Analog input
31 S10 I 63 AD1 I Analog input
32 S11 I 64 S0 I Switch matrix data
MN101C027YB (XS711200) CPU
PIN
NO.
NAME I/O FUNCTION
PIN
NO.
NAME I/O FUNCTION
PNL : IC001
O