LC83025E Datasheet, PDF (4/15 Pages) Sanyo Semicon Device – Digital Signal Processor for Karaoke Products

LC83025E
Pin Functions
Pin No.
Symbol
[Control pins]
13
OSC1
14
OSC2
10
FS384I
11
SELC
18
SAIF
19
SAOF
17
RES
25 to 21
TEST5 to
TEST1
20
TEST6
48
P0
50, 49
P2, P1
51
P3
52
P4
[External memory interface]
79
RAS
80
CAS
1
DREAD
2
DWRT
68 to 60
A8 to A0
69 to 71,
74 to 78
D7 to D0
[Audio interface]
9
LRCKI
5
LRCKO
8
BCKI
4
BCKO
6
FS384O
7
ASI
3
ASO
35
ADL1
33
ADL2
37
ADL3
40
ADR1
38
ADR2
42
ADR3
45
ADM1
43
ADM2
47
ADM3
28
DAOL
31
DAOR
[Microcontroller interface]
55
SIRQ
59
SIAK
56
SI
57
SICK
58
SRDY
I/O
Function
I Crystal oscillator connection (768 fs)
O Crystal oscillator connection (768 fs)
I 384 fs input (Apply a clock that is equal to the OSC1/OSC2 768 fs clock divided by 2.)
I Audio clock source switching (High: Fixes FS384I as the clock)
I Digital audio input mode switching (Low: backward packed, High: forward packed)
I Digital audio output mode switching (Low: 48 fs, High: 64 fs)
I Reset
I Test (Must be tied to ground in normal operation.)
O Test (Must be left open in normal operation.)
I Coefficient transfer mode switching
I Initial operating mode setting (This pin should be held high in normal operation.)
O Microphone signal present (low output) or absent (high output) indication output
O Music signal present (low output) or absent (high output) indication output
O RAS signal output
O CAS signal output
O External memory read signal output
O External memory write signal output
O Address outputs
I/O Data I/O (Normally, only D3 to D0 are used.)
I ASI L/R clock input (1 fs)
O ASO L/R clock output (1 fs)
I ASI bit clock input (32 fs or higher)
O ASO bit clock output (48 fs or 64 fs)
O ASO 384 fs output
I Digital audio data input (MSB first, 16 bits)
O Digital audio data output (MSB first, backward packed, 16 bits)
I A/D converter input (left channel)
O A/D converter output (left channel)
O A/D converter output (left channel)
I A/D converter input (right channel)
O A/D converter output (right channel)
O A/D converter output (right channel)
I A/D converter input (microphone)
O A/D converter output (microphone)
O A/D converter output (microphone)
O D/A converter output (left channel)
O D/A converter output (right channel)
I Serial input request signal input
O Output indicating serial input execution in progress
I Serial data input from the control microcontroller (8-bit serial data)
I SI transfer clock input
I Ready signal input from the control microcontroller that indicates that serial data input has completed
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