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PDF LC89602 Data sheet ( Hoja de datos )
| Número de pieza | LC89602 | |
| Descripción | Audio Decoder LSI for Mini-Disk Playback | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LC89602 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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Ordering number : EN*5059A
CMOS LSI
LC89602
Audio Decoder LSI for Mini-Disk Playback
Preliminary
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 µm CMOS
process
• CCB CPU interface
• Low-voltage operation (VDD = 3.6 to 5.5 V)
• Package: QIP80E
Package Dimensions
unit: mm
3174-QFP80E
[LC89602]
SANYO: QIP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
N2494MO No. 5059-1/6
1 page  
Pin Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Symbol
VDD
VSS
DO
DI
CE
CL
—
SREQ
SEPF
SACK
SWR
VDD
VSS
SDIN7
SDIN6
SDIN5
SDIN4
SDIN3
SDIN2
SDIN1
SDIN0
—
VSS
VDD
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
VDD
VSS
CLKI
—
BDOUT
ADOUT
LRCO
WDCO
BCO
ENH
LC89602
I/O
— Power supply
— Ground
O CPU interface data output
I CPU interface data input
I CPU interface chip enable input
I CPU interface clock input
— Unused
O Sound block data request output
I Sound block data empty flag input
I Sound block data acknowledge input
I Sound block data write clock input
— Power supply
— Ground
I Sound block data input
I Sound block data input
I Sound block data input
I Sound block data input
I Sound block data input
I Sound block data input
I Sound block data input
I Sound block data input
— Unused
— Ground
— Power supply
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Unused
— Power supply
— Ground
I System clock input
— Unused
O Serial audio data output B
O Serial audio data output A
O LR clock output
O Word clock output
O Bit clock output
O De-emphasis specifier output
Function
Continued on next page.
No. 5059-5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LC89602.PDF ] | |
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