Lsi Pin Description - Yamaha PSR-S550 Service Manual

PSR-S550/PSR-S550B

■ LSI PIN DESCRIPTION

CONTENTS
● AK4385ET (X6040A01) DAC ....................................................................................... 16
MN101C027YB (XS71120R) CPU ............................................................................... 16
●
● R8A0232BG (X8810A00) CPU (SWX02) ..................................................................... 17
● S1D13700F01A100 (X5422A00) LCD CONTROLLER ............................................... 19
● UPD789022GB-A15-8E (XZ56010R) CPU (MKS) ....................................................... 19
AK4385ET (X6040A01) DAC (Digital to Analog Converter)
PIN
NAME I/O FUNCTION
NO.
1 MCLK I Master Clock
2 BICK I Audio Serial Data Clock
3 SDTI I Audio Serial Date Input
4 LRCK I L/R Clock
5 PDN I Power Down mode
6 CSN I Chip Select
7 CCLK I Control Data Input
8 CDTI I Control Data Input
MN101C027YB (XS71120R) CPU
PIN
NAME I/O
NO.
1 S1 I
2 S2 I
3 S3 I
4 S4 I
5 S5 I
6 VREF+ -
7 VDD -
8 OSC2 O
9 OSC1 I
10 VSS -
11 XI I
12 XO O
13 MMOD I
14 RD0 O
15 RXD I
16 D0 O
17 D1 O
18 D2 O
19 D3 O
20 D4 O
21 /RST I
22 D5 O
23 D6 O
24 D7 O
25 D8 O
26 D9 O
27 S6 I
28 S7 I
29 S8 I
30 S9 I
31 S10 I
32 S11 I
16
FUNCTION
Switch matrix data
Power supply (+5V, analog)
Power supply (+5V)
Crystal oscillator (8MHz)
Crystal oscillator (8MHz)
Ground
Not used
Not used
Memory mode select (Grounded)
Rotary encoder data
MIDI receive data
LED and switch drive data
Reset
LED and switch drive data
Switch matrix data
PIN
NAME I/O FUNCTION
NO.
9 AOUTR- O Rch Analog out(-)
10 AOUTR+ O Rch Analog out(+)
11 AOUTL- O Lch Analog out(-)
12 AOUTL+ O Lch Analog out(+)
13 Vss - Ground
14 VDD - Power Supply
15 DZFR O Rch Data Zero Input Detect
16 DZFL O Lch Data Zero Input Detect
PIN
NAME I/O
NO.
33 S12 I
34 S13 I
35 S14 I
36 TXD O
37 S15 I
38 S16 I
39 S17 I
40 S18 I
41 L16 O
42 L17 O
43 L18 O
44 L19 O
45 L8 O
46 L9 O
47 L10 O
48 L11 O
49 L12 O
50 L13 O
51 L14 O
52 L15 O
53 L7 O
54 L6 O
55 L5 O
56 L4 O
57 L3 O
58 L2 O
59 L1 O
60 L0 O
61 VREF -
62 AD0 I
63 AD1 I
64 S0 I
DM: IC14
FUNCTION
Switch matrix data
MIDI transmit data
Switch matrix data
LED drive data
LED and switch drive data
Grounded
Analog input
Analog input
Switch matrix data
PNL:IC101