Yamaha DISKLAVIER MX1Z Service Manual page 16

MX1Z
LC92011B-656 (XK441A00) GATE ARRAY
PIN
NAME I/O
NO.
1 D0 I/O
2 D1 I/O
3 D2 I/O
4 D3 I/O
Data bus
5 D4 I
6 D5 I
7 D6 I
8 D7 I
9 ALE I Address Iatch enable
10 A15 I
11 A14 I Address bus
12 A13 I
13 Vss I Ground
14 Vcc I Power supply
15 A12 I
16 A11 I
17 A10 I
Address bus
18 A9 I
19 A8 I
20 A7 I
21 NC Not used
22 A1 I
Address bus
23 A0 I
24 WDCLR O Watching dog timer
25 WDOK I Watching dog timer OK
26 PROT0 I Protct 0
27 Vss I Ground
28 MD00 I MIDI
29 MD02 O MIDI
30 Vss I Ground
31 Vcc I Power supply
32 R/W I Read/Write
33 /E I E clock
34 RAM/CS O RAM Chip select
35 ROM/CS O ROM Chip select
36 EEPRO O EEP-ROM Chip select
37 M/CS I Ground
38 VssEXT I Clock
39 ALXTAL O Clock
40 Vss I Ground
16
FUNCTION
PIN
NAME I/O
NO.
41 F0 O Frequency 0 16 M
42 F1 O Frequency 1 8 M
43 F2 O Frequency 2 4 M
44 1SHOT O One shot
45 OK1S I OK one shot
46 TESTIN I Test pin, not used
47 RESET I Reset
48 RES O Reset
49 /RES O Reset
50 GAP60 I Gate array port
51 GAP61 O
52 Vss I Ground
53 Vcc I Power supply
54 PON O Play ON
55 THERMO I Thermostat singnal
56 Vss I Ground
57 MD10 O MIDI
58 MD12 O MIDI
59 Vss I Ground
60 OP5 O
61 OP4 O
62 OP3 O Output port
63 OP2 O
64 OP1 O
65 /RD O Read
66 /WR O Write
67 BS11 O
68 BS10 O
69 BS9 O Bank select
70 BS8 O
71 BS7 O
72 Vss I Ground
73 Vcc I Power supply
74 BS6 O
75 BS5 O
76 BS4 O
77 BS3 O Bank select
78 BS2 O
79 BS1 O
80 BS0 O
PK-CTL: IC7
FUNCTION