Lsi Pin Description - Yamaha MU100 Service Manual

MU100

LSI PIN DESCRIPTION

HD6432655A00F (XT443A00) CPU
PIN
NAME I/O
NO.
1 CS1 O Chip Select for System RAM (CS1)
2 CS0 O Chip Select for System RAM (CS0)
3 Vss -
4 Vss - GND
5 Vcc - Power Supply
6 A0 O
7 A1 O
Address Bus
8 A2 O
9 A3 O
10 Vss - GND
11 A4 O
12 A5 O
13 A6 O
14 A7 O
Address Bus
15 A8 O
16 A9 O
17 A10 O
18 A11 O
19 Vss - GND
20 A12 O
21 A13 O
22 A14 O
23 A15 O
Address Bus
24 A16 O
25 A17 O
26 A18 O
27 A19 O
28 Vss - GND
29 A20 O Address Bus
30 PA5 I Off Line Detection
31 PA6 O Signal for Rotary encoder(REB)
32 PA7 O Signal for Rotary encoder(REA)
33 P67 I Plug Detection of A/D Input
34 P66 O NC
35 Vss - GND
36 Vss - GND
37 P65 O Reset Signal for SWP30
38 P64 O Reset Signal for PB
39 Vcc - Power Supply
40 D0 I/O
41 D1 I/O
Two Way Data Bus
42 D2 I/O
43 D3 I/O
44 Vss - GND
45 D4 I/O
46 D5 I/O
47 D6 I/O
48 D7 I/O
Two Way Data Bus
49 D8 I/O
50 D9 I/O
51 D10 I/O
52 D11 I/O
53 Vss - GND
54 D12 I/O
55 D13 I/O
Two Way Data Bus
56 D14 I/O
57 D15 I/O
58 Vcc - Power Supply
59 TXD0 O Serial MIDI OUT (TXD0)
60 TXD1 O Serial Host OUT (TXD1)
61 RXD0 I Serial MIDI IN B (RXD0)
62 RXD1 I Serial MIDI IN A (RXD1) or Host IN
63 P34 O A/D Gain Control Signal(ADG1)
64 P35 O A/D Gain Control Signal(ADG2)
12
FUNCTION
PIN
NAME I/O
NO.
65 Vss - GND
66 P60 O NC
67 Vss - GND
68 Vss - GND
69 P61 O NC
70 P62 O PB Select (SW1)
71 P63 O PB Select (SW2)
72 P27 O NC
73 P26 O 1 MHz Clock for Serial Interface
74 P25 O LCD Contrast (LCDC-C)
75 P24 O LCD Contrast (LCDC-B)
76 P23 O LCD Contrast (LCDC-A)
77 P22 O LCD Control (LCD-E)
78 P21 O LCD Control (LCD-R/W)
79 P20 O LCD Control (LCD-RS)
80 WDT0VF O NC
81 RES I Reset Signal
82 NMI I not used
83 STBV I not used
84 Vcc - Power Supply
85 XTAL Quartz Cristal 16 MHz
86 EXTAL Quartz Cristal 16 MHz
87 Vss - GND
88 NC
89 Vcc - Power Supply
90 AS O NC
91 RD O Read Signal
92 HWR O Write Signal
93 LWR O NC
94 PF2 O PB Select (SW4)
95 PF1 O SW Data Read Control (SWD)
96 PF0 O LED,SW Strobe Data Latch (SWS)
97 TXD2 O Serial Output for PB (TXD2)
98 RXD2 I Serial Input for PB (RXD2)
99 Vss - GND
100 Vss - GND
101 SCK2 O Serial Sync Clock for PB (MIDCLK)
102 P53 O Reset Signal for Rotary Encoder
103 AVcc I Power Supply for A/D
104 Vref I Reference Voltage for A/D
105 AN0 I Analog Level Input R
106 AN1 I not used
107 AN2 I Analog Level Output L
108 AN3 I not used
109 AN4 I Detection of Host SW Position
110 AN5 I not used
111 AN6 I Battery Voltage Check
112 AN7 I ModelCheck (MU100:GND)
113 AVss - GND
114 Vss - GND
115 P17 I/O LCD Data(DB7),SW Data,LED6
116 P16 I/O LCD Data(DB6),SW Strobe Data
117 P15 I/O LCD Data(DB5),SW Strobe Data
118 P14 I/O LCD Data(DB4),SW Data,LED5
119 P13 I/O LCD Data(DB3),SW Data,LED4
120 P12 I/O LCD Data(DB2),SW Data,LED3
121 P11 I/O LCD Data(DB1),SW Data,LED2
122 P10 I/O LCD Data(DB0),SW Data,LED1
123 MD0 I GND
124 MD1 I GND
125 MD2 I +5 D
126 PG0 O PB Select (SW3)
127 CS3 O NC
128 CS2 O Chip Select for SWP30 (CS2)
FUNCTION