Yamaha PortaTone PSR-350 Manual de servicio - Página 13
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LSI PIN DESCRIPTION
µPD789022GB-A15-8E (XZ560100) CPU ........................................................................................... 13
HG73C205AFD (XU947C00) SWX00B (Tone Generator) ................................................................... 14
HD63266F (XI939A00) FDC (Floppy Disk Controller) ......................................................................... 13
S6A0069X10-Q0RJ (XV226A00) LCD DRIVER .................................................................................. 15
µPD789022GB-A15-8E (XZ560100) CPU
PIN
NAME
I/O
NO.
1
P12
I/O
2
P11
I/O
Port 1
3
P10
I/O
4
P47/KR7
I/O
5
P46/KR6
I/O
6
P45/KR5
I/O
7
P44/KR4
I/O
Port 4/Key return signal detection input
8
P43/KR3
I/O
9
P42/KR2
I/O
10
P41/KR1
I/O
11
P40/KR0
I/O
12
NC
13
IC
Internally connected (N.C.)
14
X2
Clock
15
X1
I
16
VSS0
Ground
17
VDD0
Power supply
18
/RESET
I
System reset
19
P53
I/O
Port 5
20
P52
I/O
21
P51/TO2
I/O
Port 5/16-bit timer output
22
P50/TI0/TO0
I/O
Port 5/External count clock input to 8-bit timer/8-bit timer output
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
FUNCTION
FUNCTION
PIN
NAME
I/O
NO.
23
P32/INTP2/CPT2
I/O
Port 3/External interrupt input/Capture edge input
24
P31/INTP1
I/O
Port 3/External interrupt input
25
P30/INTP0
I/O
26
P22/RXD/SI0
I/O
Port 2/Asynchronous serial interface serial data input/Serial interface serial data input
27
P21/TXD/SO0
I/O
Port 2/Asynchronous serial interface serial data output/Serial interface serial data output
28
P20/ASCK//SCK0
I/O
Port 2/Asynchronous serial interface serial clock input/Serial interface serial clock
29
P07
I/O
30
P06
I/O
31
P05
I/O
32
P04
I/O
Port 0
33
P03
I/O
34
P02
I/O
35
P01
I/O
36
P00
I/O
37
NC
38
VDD1
Power supply
39
VSS1
Ground
40
P17
I/O
41
P16
I/O
42
P15
I/O
Port 1
43
P14
I/O
44
P13
I/O
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
PSR-350
MKS5 : IC1
FUNCTION
DM : IC304
FUNCTION
13