Ordering number : ENA2351
LC823425
CMOS LSI
Low Power Consumption
1 chip Audio LSI
for Portable Sound Solution
Overview
http://onsemi.com
LC823425 is an audio processing solution for portable devices such as IC recorders. This product features a built-in
hardwired MP3 encoder/decoder system, enabling the industry’s lowest power consumption of 5mW and supporting
advanced functionality via a built-in digital signal processor (DSP).
Function
ARM7TDMI-S
TM1
, AMBA
®
(AHB/APB) system
Internal SRAM(512kbyte), Internal ROM(128kbyte).
Boot code and built-in standard function
MultiPort Memory Controller (one CS),
External Memory Controller (two CS)
DMA controller (2ch), Interrupt controller
(external 5ch + enhancing 16ch, and internal 31ch factor)
SIO(2ch), UART(2ch),
TQFP128 14x14 / TQFP128L
I
2
C (1ch Single Master and Full/Standard conforming)
General-purpose port (I/O 40ch+1ch (FBGA221J is selected)).
Plain timer (1ch) and multiple timer (2ch3), Watch dog timer (1ch)
10bit A/D converter (6ch)
SD card IF(2ch) (w/o CPRM), MemoryStick IF(1ch)
USB2.0(480Mbps/12Mbps) device IF. Built-in PHY
RTC (real time clock)
MP32 hard wired encoder/decoder
DSP system
WMA3 (Microsoft WMA Decoder Profile Level3 conforming)
AAC (MPEG4 LC-AAC)
LFBGA211 11x11 / FBGA221J
Variable speed playback (0.5-2.0)
Six band equalizer (EQ3), Highband replication circuit(YY filter), Surround (+EQ2) circuit
16/24bit PCM interface, Sampling rate converter, BEEP circuit, Digital mic interface
DA converter and 16bit audio D class amplifier (LC LPF necessity in the outside)
1
2
ARM7TDMI-S
TM
is the trademark of ARM Limited
MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson.
Supply of this product does not convey license nor imply any right to distribute content created with this product in
revenue-generating broadcast systems (terrestrial, satellite, cable and/or other distribution channels), streaming applications
(via Internet, intranets and/or networks), other content distribution systems (pay-audio or audio-on-demand applications and the
like) or on physical media (compact discs, digital versatile discs, semiconductor chips, hard drives, memory cards and the like).
Supply of this product does not convey license under the relevant intellectual property of Thomson and/or Fraunhofer
Gesellschaft nor imply any right to use this product in any finished end user or ready-to-use final product. An independent
license for such use is required. For details, please visit http://mp3licensing.com/.
3
This product contain technology of Microsoft company ownership, and you cannot distribute or use without getting license from
Microsoft Licensing company.
* I
2
C Bus is a trademark of Philips Corporation.
ORDERING INFORMATION
See detailed ordering and shipping information on page 29 of this data sheet.
Semiconductor Components Industries, LLC, 2014
July, 2014
70914HK 20130617-S00001, 20130425-S00003 No.A2351-1/29
LC823425
Specifications
Absolute Maximum Ratings
at VSS=0V
Item
Maximum power
supply voltage
Symbol
Vdd1
VddRTC
VddXT1
AVddUSBPHY1
AVddPLL1
AVddDAMPL
AVddDAMPR
Vdd2
VddSD0
VddSD1
AVddADC
AVddPLL2
AVddUSBPHY2
VI
VIUSB
Operating ambient
temperature
Ambient temperature of
preservation
Topr
Tstg
USBDDP, USBDDM terminal
Condition
Ratings
Unit
0.5
to 1.8
V
0.5
to 2.5
V
0.5
to 4.6
V
Input voltage
0.5
to VDD+0.5
0.5
to AVddUSBPHY2+0.5
20
to +75
55
to +125
V
V
C
C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
Recommended Operating Conditions
at Ta=20C to +75C
Item
Power-supply
voltage
Symbol
Vdd1
VddXT1
AVddPLL1
AVddPLL2
VddRTC
Vdd2
VddSD0
VddSD1
AVddADC
AVddUSBPHY1
AVddUSBPHY2
AVddDAMPL
AVddDAMPR
VIN
Condition
Low voltage operation
Min
0.93
0.93
0.93
2.7
0.9
2.7
1.7
2.7
1.7
2.7
1.7
2.7
0.93
2.7(*2)
0.93
0.93
0
Typ
1.0
1.0
1.0
3.3
1.0
3.3
1.8
3.3
1.8
3.3
1.8
3.3
1.0
3.3
1.2
1.2
Max
1.1
1.1
1.1
3.6
1.3
3.6
1.95
3.6
1.95
3.6
1.95
3.6
1.1
3.6
1.65
1.65
VDD
High voltage operation
Min
1.1
1.1
1.1
2.7
0.9
2.7
1.7
2.7
1.7
2.7
1.7
2.7
1.1
2.7(*2)
0.93
0.93
0
Typ
1.2
1.2
1.2
3.3
1.0
3.3
1.8
3.3
1.8
3.3
1.8
3.3
1.2
3.3
1.2
1.2
Max
1.3
1.3
1.3
3.6
1.3
3.6
1.95
3.6
1.95
3.6
1.95
3.6
1.3
3.6
1.65
1.65
VDD
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Input voltage range
(*1) Follow the operating frequency specifications because the operating frequency ranges are specified according to the operating
voltage ranges.
(*2) When USB is used (include USB suspend state), this should be 3.0V(MIN).
(*3) At any state
-Vdd1=AVddUSBPHY1=AVddPLL1=VddXT1
-Vdd2, VddSD0, VddSD1, AVddPLL2, AVddADC, AVddUSBPHY2, and AVddDAMPL=AVddDAMPR can be supplied with
different voltages.
However, whenever Vdd1=AVddUSBPHY1=AVddPLL1=VddXT1Vdd2 is supplied, Vdd2, VddSD0, VddSD1,AVddPLL2,
AVddADC, AVddUSBPHY2, and AVddDAMPL=AVddDAMPR must be supplied.
-When only RTC operates, VddRTC can be supplied while *Vdd*=0V(exclude VddRTC) and the BACKUPB=Low input.
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
No.A2351-2/29
LC823425
Item
Oscillation input
frequency
Symbol
Fxin1
FxinRTC
Frc
Time to
stabilize of
oscillation
Internal operation
frequency
Txin1
TxinRTC
Farm
Fahb
Fapb
Fdsp
Faud(*1)
Fdec
Fenc
ARM7TDMI-S
ARM AHB
ARM APB
DSP
AUDIO(768fs)
MP3 Decoder
MP3 Encoder
0
0
0
0
0
0
0
33.8688
16.9344
16.9344
Condition
ARM7TDMI-S
Surrounding of
ARM
RTC
RC
Low voltage operation
Typ
Max
48MHz±200ppm
32.768
1
High voltage operation
Min
Typ
Max
The same left
The same left
The same left
4
5
Min
Unit
MHz
kHz
MHz
ms
ms
0.4
2
20
20
The same left
The same left
0
0
0
0
The same left
The same left
The same left
80
80
80
110.592
55
55
55
110.592
73.728
36.864
18.432
MHz
MHz
MHz
MHz
MHz
MHz
MHz
(*1) Almost all of audio functions operate on 256*Fs (sampling frequency) clock,
while SRC(sampling rate converter) and D class amplifier operate on 384*Fs clock.
256*Fs and 384*Fs clocks are generated from 768*Fs base clock.
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
4
5
Reference value @Ta=25 celsius degree and Vdd1=1.0V, and depends on circumstances.
Reference value @Ta=25 celsius degree and VddRTC =1.0V, and depends on circumstances.
No.A2351-3/29
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