Yamaha PSR-170 User Manual

PSR-170
10
■ LSI PIN DESCRIPTION
● YMW728-F (XU355A00) GEW12 (AWM Tone Generator)
DM-LCD : IC001
PIN
NAME I/O FUNCTION NAME I/O FUNCTION
PIN
NO. NO.
1 PL0 I/O 51 DAC_Vdd Power supply
2 PL1 I/O 52 SYI I Synch. signal
3 PL2 I/O 53 ICN I Inicial Clear
4 PL3 I/O Port L 54 Vss Ground
5 PL4 I/O 55 MA19 O
6 PL5 I/O 56 MA18 O Memory address bus
7 PL6 I/O 57 MA8 O
8 Vdd Power supply 58 Vdd Power supply
9 PA0 I/O 59 MA17 O
10 PA1 I/O 60 MA9 O
11 PA2 I/O
Port A
61 MA7 O
Memory address bus
12 PA3 I/O 62 MA10 O
13 PA4 I/O 63 MA6 O
14 PA5 I/O 64 MA11 O
15 PB0 I/O 65 Vss Ground
16 PB1 I/O 66 MA5 O
17 PB2 I/O
Port B
67 MA12 O
18 PB3 I/O 68 MA4 O
Memory address bus
19 PB4 I/O 69 MA13 O
20 PB5 I/O 70 MA3 O
21 Vss Ground 71 MA14 O
22 PC0 I/O 72 Vdd Power supply
23 PC1 I/O 73 MA2 O
24 PC2 I/O
Port C
74 MA15 O
25 PC3 I/O 75 MA1 O
Memory address bus
26 PC4 I/O 76 MA16 O
27 PC5 I/O 77 MA0 O
28 PD0 I/O 78 MA20 O
29 PD1 I/O 79 Vss Ground
30 PD2 I/O
Port D
80
ROMLOEN O OEN pin
31 PD3 I/O 81 MD15 I/O
32 PD4 I/O 82 MD0 I/O
33 PD5 I/O 83 MD7 I/O
34 Vdd Power supply 84 MD8 I/O
Memory data Input / output
35 PE0 I/O 85 MD14 I/O
36 PE1 I/O 86 MD1 I/O
37 PE2 I/O
Port E
87 MD6 I/O
38 PE3 I/O 88 MD9 I/O
39 PE4 I/O 89 Vdd Power supply
40 PE5 I/O 90 MD13 I/O
41 TESTE I Test Mode E 91 MD2 I/O
42 TESTD I Test Mode D 92 MD5 I/O
43 Vss Ground 93 MD10 I/O
Memory data Input / output
44
DACLMM O 1bit DAC Output L (-) 94 MD12 I/O
45 DACLPP O 1bit DAC Output L (+) 95 MD3 I/O
46 DACRPP O 1bit DAC Output R (+) 96 MD4 I/O
47
DACRMM O 1bit DAC Output R (-) 97 MD11 I/O
48 DAC_Vss Ground 98 Vss Ground
49 X_O O Crystal quarts Output 99 MIDII I MIDI Input
50 X_I I Crystal quarts Input 100 MIDIO O MIDI Output

Yamaha PSR-170 Specifications

General

Type	Portable Keyboard
Keyboard	61 keys
Effects	Reverb, Chorus
Polyphony	32 notes
ROM	100 voices
Display	LCD
Presets	100 styles
Connections	Headphones
Power Supply	AC adapter or batteries