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IC BLOCK DIAGRAM & DESCRIPTION
IC102 LC78684NE-UHK-E (MP3 Decoder for CD Player)
VCOC
VPDO
CKOUT
CKIN
VPRFR
VCO
+
PLL
WOK
CNTOK
OVF
LRSY
DATACK
DATAIN
C2FIN
SFSY
PW
SBSY
SBCK
RESB
M
U
X
ADLRCK
ADBCK
ADDATA
FSYNC
CRCF
STREQ
STCK
STDAT
INTB
CMDOUT
CMDIN
CE
CL
MDATA[15:0]
MADRS[12:0]
RASB
CASUB
CASLB
OEB
WEB
DRAM-I /F
System
Clock-gen
CDROM
Decoder
MP3
Decoder
CPU- I / F
Audio- I / F
Data- I / F
Anti-Shock
(compression·
incompressible)
Pin
No.
Pin Name I/O Block
Description
1 LRSY
I
CD L/R clock input.
2 ADDATA
O
Audio data output.
3 ADBCK
O
Audio bit clock output.
4 ADLRCK
O
Audio L/R clock output.
5 CF2IN
I
CD IF
CD C2 error flag input.
6 TEST1
I
TEST
Test input 1(Must be connected to GND)
7 CKIN
I
CLOCK
System clock(16.9344MHz) input.
8 V S S
-
Power
supply
GND earth terminal.
9 CKOUT
O CLOCK
Clock(384Fs) output for external DF/DAC
10 TEST2
I
TEST
Test input 2(Must be connected to GND)
11 DVDD1
-
Power
supply
Digital power supply pin for I/O.
12 P W
I
CD subcode data serial input.
13 S B S Y
I
CD subcode block synchronized signal input.
14 SFSY
I
CD subcode flame synchronized signal input.
15 SBCK
O
Serial clock output for CD subcode transfer.
16 AVDD
-
Power
supply
Analog(PLL) Power supply.
17 VPRFR
-
Pin to set the oscillation range of VCO.
18 V C O C
I
VCO control voltage input.
19 VPDO
O
VCO charge pump output.
20 A V S S
-
Analog GND earth terminal.
21 DVDD2
-
Power supply pin for internal logic.
22 V S S
-
GND earth terminal.
23 MDATA0
I/O
DRAM data bass 0
24 MDATA1
I/O
DRAM data bass 1
25 MDATA2
I/O
DRAM data bass 2
26 MDATA3
I/O
DRAM data bass 3
27 MDATA4
I/O
DRAM data bass 4
28 MDATA5
I/O
DRAM data bass 5
29 MDATA6
I/O
DRAM data bass 6
30 MDATA7
I/O
DRAM data bass 7
31 DVDD3
-
Digital power supply pin for I/O.
32 V S S
-
GND earth terminal.
33 MDATA8
I/O
DRAM data bass 8
34 MDATA9
I/O
DRAM data bass 9
35 MDATA10 I/O
DRAM data bass 10
36 MDATA11 I/O
DRAM data bass 11
37 MDATA12 I/O
DRAM data bass 12
38 MDATA13 I/O
DRAM data bass 13
39 MDATA14 I/O
DRAM data bass 14
40 MDATA15 I/O
DRAM data bass 15
41 RASB
O
RAS output(L-active) for EDO-DRAM, SDRAM.
42 W E B
O
WE output(L-active) for EDO-DRAM, SDRAM.
CAS output(For lower byte, L-active)
when use EDO-DRAM.
Clock output for DRAM when use SDRAM.
CAS output(For upper byte, L-active)
when use EDO-DRAM.
CAS output for SDRAM.(L-active)
OE output(L-active) when use EDO-DRAM.
CS output (L-active) when use SDRAM.
46 MADRS12 O
DRAM address output 12
47 MADRS11 O
DRAM address output 11
48 MADRS10 O
DRAM address output 10
49 MADRS9
O
DRAM address output 9
50 MADRS8
O
DRAM address output 8
OEB
O
44
45
43 CASLB
O
CASUB
O
Audio IF
Subcode
IF
PLL
Power
supply
Memory
IF
Power
supply
Memory
IF
Pin
No.
Pin Name
I/O Block
Description
51 DVDD4
-
Digital power supply pin for I/O.
52 V S S
-
GND earth terminal.
53 MADRS7
O
DRAM address output 7
54 MADRS6
O
DRAM address output 6
55 MADRS5
O
DRAM address output 5
56 MADRS4
O
DRAM address output 4
57 MADRS3
O
DRAM address output 3
58 MADRS2
O
DRAM address output 2
59 MADRS1
O
DRAM address output 1
60 MADRS0
O
DRAM address output 0
61 DVDD5
-
Power supply pin for internal logic.
62 V S S
-
GND earth terminal.
When EDO-DRAM use. MP3 data request flag
output.(H-active)
/ DRAM data request flag input(CD ROM : H-active)
When SDRAM use CKE output(L-active).
When EDO-DRAM use. MP3 data transfer clock input.
/ DRAM data transfer clock output.
When SDRAM use DQML output(L-active).
When EDO-DRAM use. MP3 data serial input
/ DRAM data serial output.
When SDRAM use DQMH output(L-active).
66 FSYNC
O MP3-dec
MP3 flame synchronized signal(H-active)
/ Complete detection flag of data connecting
point request(CD-DA : H-active)
When EDO-DRAM use. CRC check (CDROM data / CDDA
subcode data) Result output(H-active)
/ DRAM data output enable flag(H-active)
When SDRAM use ADRS13 output.
68 DVDD6
-
Digital power supply pin for I/O.
69 V S S
-
GND earth terminal.
70 WOK
I
DRAM light permission input(CD-DA : H-active)
DRAM data request flag input(Only when EDO-DRAM used.)
71 CNTOK
O
Complete detection flag of data connecting point request
(CD-DA : H-active) SYNC error monitor flag (MP3 : H-active)
DRAM data serial output(Only when EDO-DRAM used.)
72 OVF
O
DRAM light interrupt flag(CD-DA : H-active)
Emphasis output flag (MP3 : H-active)
DRAM data transfer clock output.
(Only when EDO-DRAM used.)
73 CMDOUT
O
Command serial data output. (Nch open drain output pin)
74 CMDIN
I
Command serial data input.
75 C L
I
Command serial clock input.
76 C E
I
Command enable input.(H-active)
77 INTB
O
Interrupt signal output (L-active)
DRAM light interrupt flag(CD-DA : H-active)
78 RESB
I
System reset (L-active)
79 DATAIN
I
CD serial data input.
80 DATACK
I
CD bit clock input.
CRCF
STDAT
I/O
O
63 STREQ
I/O
STCK
I/O
64
65
67
Memory
IF
Power
supply
Power
supply
Anti
shock
/MP3
input
&
output
Micon
I/F
CD I/F
MP3
Stream
Input /
output
C D
monitor
Power
supply
