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YM2154

Description

Rhythm Processor-4 (RYP4)
ADPCM Rompler and 10ch A/D converter

Spec
12 individual samples available
10 analog input
Serial and parallel DAC interface (exclusive)
Up to 4 ch individual output (typically 2ch as L/R)
2 Serial ROM for ADPCM samples
Up to 4 bit parallel output

Package

QIP64

Pinout

No. Name I/O Function
1 VSS - Digital Ground
2 /INT O Interrupt Request
3 S2 O DAC Exponent Output
4 S1 O
5 S0 O
6 B9 O DAC Mantissa Output
7 B8 O
8 B7 O
9 B6 O
10 B5 O
11 B4 O
12 B3 O
13 B2 O
14 B1 O
15 B0 O DAC Mantissa Output LSB / DAC Clock Output
16 SD O DAC Serial Data Output
17 VSS - Digital Ground
18 VREF I Reference Voltage for ADC
19 VDD2 - Analog DC Supply
20 VGND - Analog Ground
21 AN1 I Analog Data Input
22 AN2 I
23 AN3 I
24 AN4 I
25 AN5 I
26 AN6 I
27 AN7 I
28 AN8 I
29 AN9 I
30 AN10 I
31 /IC I Initial Clear
32 /CT3/ST O LED Control / DAC Strobe Output
33 /CT2/SH4 O LED Control / Sample Hold Output
34 /CT1/SH3 O LED Control / Sample Hold Output
35 SHR/SH2 O Sample Hold Output
36 SHL/SH1 O Sample Hold Output
37 /CT0 O LED Control
38 /RD I Read Enable
39 /WR I Write Enable
40 /CS I Chip Select
41 A0 I Address Bus
42 A1 I
43 A2 I
44 A3 I
45 A4 I
46 A5 I
47 A6 I
48 D0 I/O Data Bus
49 D1 I/O
50 D2 I/O
51 D3 I/O
52 D4 I/O
53 D5 I/O
54 D6 I/O
55 D7 I/O
56 RDA2 I ROM Data Input (ch7-12)
57 RDA1 I ROM Data Input (ch1-6)
58 RSYNC O ROM Data Synch Pulse Output
59 RAD2 O ROM Address Output (ch7-12)
60 RAD1 O ROM Address Output (ch1-6)
61 VDD2 - Digital DC Supply
62 PO O ROM Clock Output
63 XI I Master Clock Input
64 XO O Master Clock Output

Used for

PortaTone PSR-60
PortaTone PSR-70

Links

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