Ordering number : EN
*
5059A
Overview
The LC89602 is an audio decoder LSI for mini-disk
playback units. This LSI implements the processing that
precedes the D/A converter in playback-only mini-disk
players. That is, the LC89602 receives data in sound
frame units from a mini-disk data decoder LSI (such as
the Sanyo LC89610), expands the audio signal and
decoder that signal directly to a D/A converter. This audio
expander LSI accepts audio data that has been compressed
by a factor of about 5 to 1, and expands that data to audio
data that is equivalent to that from a CD player, namely
16-bit quantized data with a 44.1 kHz sampling frequency.
Since this expansion consists of complex operations
involving discrete cosine transformations and digital
filtering, if the computations performed on this 16-bit data
were performed with a 16-bit precision, the arithmetic
errors associated with the calculations would result in
arithmetic noise in the lower bits and a full 16 bits of
precision would not be acquired. Inversely, increasing the
number of registers and the bus width to improve the
precision of the arithmetic would increase the size of the
circuit and the power required. The LC89602 was
optimized to achieve both the low power required by
portable units as well as the high-precision arithmetic
required by home units.
Features
Stereo audio expansion implemented in a single chip
High-precision arithmetic using a 24-bit multiplier
Expanded dynamic range provided by a block floating-
point circuit
Two output systems and independent attenuators built in
Digital audio outputs with a 20-bit data width and
digital audio interface outputs
Low power design implemented in a 0.8 m CMOS
process
CCB CPU interface
Low-voltage operation (V
DD
= 3.6 to 5.5 V)
Package: QIP80E
Package Dimensions
unit: mm
3174-QFP80E
Preliminary
SANYO: QIP80E
[LC89602]
CMOS LSI
N2494MO No. 5059-1/6
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Audio Decoder LSI for Mini-Disk Playback
LC89602
Specifications
Absolute Maximum Ratings
at V
SS
= 0 V
Allowable Operating Conditions
at Ta = 30 to 70C, V
SS
= 0 V
DC Characteristics
at Ta = 30 to 70C, V
SS
= 0 V, V
DD
= 4.5 to 5.5 V
No. 5059-2/6
LC89602
Parameter
Symbol
Conditions
min
typ
max
Unit
Input high-level voltage
V
IH
1
RESET, CCB, CE, CL, TP0
0.8 V
DD
V
Input low-level voltage
V
IL
1
RESET, CCB, CE, CL, TP0
0.2 V
DD
V
Input high-level voltage
V
IH
2
Except for RESET, CCB, CE, CL, and TP0
0.7 V
DD
V
Input low-level voltage
V
IL
2
Except for RESET, CCB, CE, CL, and TP0
0.3 V
DD
V
Output high-level voltage
V
OH
I
OH
= 3 mA, except for DO
2.4
V
Output low-level voltage
V
OL
I
OL
= 3 mA
0.4
V
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
DD
max
Ta = 25C
0.3 to 7.0
V
I/O voltages
V
I
, V
O
Ta = 25C
0.3 to V
DD
+ 0.3
V
Operating temperature
Topr
30 to +70
C
Storage temperature
Tstg
55 to +125
C
Soldering temperature resistance
10 seconds (pins only)
260
C
Parameter
Symbol
Conditions
min
typ
max
Unit
Supply voltage
V
DD
3.6
5.5
V
Input voltage
V
IN
0
V
DD
V
Pin Functions
No. 5059-5/6
LC89602
Pin No.
Symbol
I/O
Function
1
V
DD
--
Power supply
2
V
SS
--
Ground
3
DO
O
CPU interface data output
4
DI
I
CPU interface data input
5
CE
I
CPU interface chip enable input
6
CL
I
CPU interface clock input
7
--
--
Unused
8
SREQ
O
Sound block data request output
9
SEPF
I
Sound block data empty flag input
10
SACK
I
Sound block data acknowledge input
11
SWR
I
Sound block data write clock input
12
V
DD
--
Power supply
13
V
SS
--
Ground
14
SDIN7
I
Sound block data input
15
SDIN6
I
Sound block data input
16
SDIN5
I
Sound block data input
17
SDIN4
I
Sound block data input
18
SDIN3
I
Sound block data input
19
SDIN2
I
Sound block data input
20
SDIN1
I
Sound block data input
21
SDIN0
I
Sound block data input
22
--
--
Unused
23
V
SS
--
Ground
24
V
DD
--
Power supply
25
--
--
Unused
26
--
--
Unused
27
--
--
Unused
28
--
--
Unused
29
--
--
Unused
30
--
--
Unused
31
--
--
Unused
32
--
--
Unused
33
--
--
Unused
34
--
--
Unused
35
--
--
Unused
36
--
--
Unused
37
--
--
Unused
38
--
--
Unused
39
--
--
Unused
40
--
--
Unused
41
V
DD
--
Power supply
42
V
SS
--
Ground
43
CLKI
I
System clock input
44
--
--
Unused
45
BDOUT
O
Serial audio data output B
46
ADOUT
O
Serial audio data output A
47
LRCO
O
LR clock output
48
WDCO
O
Word clock output
49
BCO
O
Bit clock output
50
ENH
O
De-emphasis specifier output
Continued on next page.
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