Analog Signal Processor (ASP)
for CD players
Overview
The LA9230M and LA9231M are analog signal processing and
servo control bipolar ICs designed for use in compact disc
players; a compact disc player can be configured by combining
these ICs, a CD-DSP such as the LC78620E, and a small
number of additional components. The differences between the
LA9230M and the LA9231M are that the LA9231M: (1) has a
focus search time that is four times faster; (2) has an additional
capacitor pin for focus search smoothing; (3) and can disable
output of the track-kick signal during EF balance adjustment.
Functions
I/V amplifier, RF amplifier (with AGC), SLC, APC, FE, TE
(with VCA and auto-balance function), focus servo amplifier
(with offset cancellation function), tracking servo amplifier
(with offset cancellation function), spindle servo amplifier
(with gain switching function), sled servo amplifier (with off
function), focus detection (DRF, FZD), track detection (HFL,
TES), defect detection, and shock detection.
Features
The following automatic adjustment functions are built in.
.
Focus offset auto cancel
.
Tracking offset auto cancel
.
EF balance auto adjustment
.
RF level AGC function
.
Tracking servo gain RF level following function
Package Dimensions
unit : mm
3159-QIP64E
[LA9230M/9231M]
SANYO : QIP64E
Specifications
Maximum Ratings
at Ta = 25 C, Pins 22, 45 = GND
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
Vsup max
Pin 56, 64
7
V
Allowable power dissipation
Pd max
350
mW
Operating temperature
Topr
25 to +75
C
Storage temperature
Tstg
40 to +150
C
Ordering number: EN 5189
Monolithic Linear IC
LA9230M/9231M
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
92595HA(II) No.5189-1/20
Operating Conditions
at Pins 22, 45 = GND
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
5
V
Operating supply voltage
V
CC
op
3.6 to 5.5
V
Operating Characteristics
at Ta = 25 C, Pins 22, 45 = GND, V
CC
(pins 56, 64) = 5 V
Parameter
Symbol
Conditions
min
typ
max
Unit
Current drain
I
CCO
V
CC
1 (pin 64) + V
CC
2 (pin 56)
22
32
42
mA
Reference voltage
Vref
VR
2.3
2.5
2.7
V
[Interface]
CE-Vth
CEvth
CE
0.8
V
CL-Vth
CLvth
CL
0.8
V
DAT-Vth
DATvth
DAT
0.8
V
Maximum CL frequency
CLmax
500
kHz
[RF amplifier]
RFSM no signal voltage
RFSMo
1.35
1.60
1.85
V
Minimum gain
RFSM
G
min
FIN1, FIN2 : 1 M
-input, PH1 = 4 V
freq = 200 kHz, RFSM
14.0
12.5
11.0
dB
[Focus amplifier]
FDO gain
FD
G
FIN2 : 1 M
-input, FDO
3.5
5.0
6.5
dB
FDO offset
FDost
Difference from reference voltage, servo on
170
0
+170
mV
Off time offset
FDofost
Difference from reference voltage, servo off
40
0
+40
mV
Offset adjustment step
FDstep
FDO
50
V
F search voltage H
FSmax
FDO
0.8
V
F search voltage L
FSmin
FDO
0.8
V
[Tracking amplifier]
TE gain MAX
TE
G
max
f = 10 kHz, E: 1 M
-input, PH1 = 4 V
5.0
6.5
8.0
dB
TE gain MIN
TE
G
min
f = 10 kHz, E: 1 M
-input, PH1 = 1 V
0.5
+1.8
+4.0
dB
TE-3 dB
TEfc
E: 1 M
-input
60
kHz
TO gain
TO
G
TH
TO gain, THLD mode
4.0
6.0
8.0
dB
TGL offset
TGLost
Servo on, TGL = H, TO
250
0
+250
mV
TGH offset
TGHost
TGL = L, difference from TGL offset, TO
50
0
+50
mV
THLD offset
THLDost
THLD mode, difference from TGL offset, TO
50
0
+50
mV
Off 1 offset
OFF1ost
TOFF = H
50
0
+50
mV
Off 2 offset
OFF2ost
TOF2 off (IF)
50
0
+50
mV
Offset adjustment step
TOstep
TO
60
mV
Balance range H
BAL-H
gain E/F input, TB = 5 V
3.5
dB
Balance range L
BAL-L
gain E/F input, TB = 0 V
3.5
dB
TOFF-VTH
TOFFvth
1.0
2.5
3.0
V
TGL-VTH
TGLvth
1.0
2.5
3.0
V
[PH]
No signal voltage
PHo
Difference from RFSM
0.85
0.65
0.45
V
[BH]
No signal voltage
BHo
Difference from RFSM
0.45
0.65
0.85
V
[DRF]
Detection voltage
DRFvth
Difference from VR at RFSM
0.60
0.35
0.20
V
Output voltage H
DRF-H
4.5
4.9
V
Output voltage L
DRF-L
0
+0.5
V
[FZD]
Detection voltage 1
FZD1
FE, difference from VR
0
+0.2
V
Detection voltage 2
FZD2
FE, difference from VR
0
V
Continued on next page.
LA9230M/9231M
No.5189 - 2/20
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
[HFL]
Detection voltage
HFLvth
Difference from VR at RFSM
0.35
0.2
0.05
V
Output voltage H
HFL-H
4.5
4.9
Output voltage L
HFL-L
0
+0.5
V
[TES]
Detection voltage LH
TES-LH
TESI, difference from VR
0.15
0.10
0.05
V
Detection voltage HL
TES-HL
TESI, difference from VR
0.05
0.10
0.15
V
Output voltage H
TES-H
4.5
4.9
V
Output voltage L
TES-L
0
+0.5
V
[JP]
Output voltage H
JP-H
Difference from JP
+
= 0 V, JP
= 0 V at JP
+
= 0 V,
JP
= 5 V, TO
0.35
0.5
0.65
V
Output voltage L
JP-L
Difference from JP
+
= 0 V, JP
= 0 V at JP
+
= 5 V,
JP
= 0 V, TO
0.65
0.5
0.35
V
[Spindle amplifier]
Offset 12
SPD12ost
Difference from VR at SPD, 12 cm mode
40
0
+40
mV
Offset 8
SPD8ost
Difference from VR at SPD, 8 cm mode
40
0
+40
mV
Offset off
SPDof
Difference from VR at SPD, OFF mode
30
0
+30
mV
Output voltage H12
SPD-H12
Difference from offset-12, 12 cm mode
CV
+
= 5 V, CV
= 0 V
0.75
1.0
1.25
V
Output voltage L12
SPD-L12
Difference from offset-12 , 12 cm mode
CV
+
= 0 V, CV
= 5 V
1.25
1.0
0.75
V
Output voltage H8
SPD-H8
Difference from offset-8, 8 cm mode
CV
+
= 5 V, CV
= 0 V
0.35
0.5
0.65
V
[Sled amplifier]
SLEQ offset
SLEQost
Difference from TO at SLEQ
30
0
+30
mV
Offset SLD
SLDost
SLEQ = VR, difference from VR
100
0
+100
mV
Offset off
SLDof
Off mode
40
0
+40
mV
Off VTH
SLOFvth
SLOF
1.0
1.4
2.0
V
[SLC]
No signal voltage
SLCo
SLC
2.25
2.5
2.75
V
[Shock]
No signal voltage
SCIo
SCI, difference from VR
40
0
+40
mV
Detection voltage H
SCIvthH
SCI, difference from VR
60
100
140
mV
Detection voltage L
SCIvthL
SCI, difference from VR
140
100
60
mV
[DEF]
Detection voltage
DEFvth
Difference between LF2 voltage when RFSM =
3.5 V and DEF is detected and LF2 voltage when
RFSM = 3.5 V
0.20
0.35
0.50
V
Output voltage H
DEF-H
4.5
4.9
V
Output voltage L
DEF-L
0
+0.5
V
[APC]
Reference voltage
LDS
LDS voltage at which LDD = 3 V
150
180
210
mV
Off voltage
LDDof
LDD
3.9
4.3
4.6
V
LA9230M/9231M
No.5189 - 3/20
Pin Function
Descriptions enclosed in brackets apply to the LA9231M only.
Pin
No.
Symbol
Contents
1
FIN2
Pickup photodiode connection pin. Added to FIN1 pin to generate the RF signal, subtracted from FIN1 pin to generate
the FE signal.
2
FIN1
Pickup photodiode connection pin.
3
E
Pickup photodiode connection pin. Subtracted from F pin to generate the TE signal.
4
F
Pickup photodiode connection pin.
5
TB
TE signal DC component input pin.
6
TE
-
Pin which connects the TE signal gain setting resistor between this pin and TE pin.
7
TE
TE signal output pin.
8
TESI
TES (Track Error Sense) comparator input pin. The TE signal is input through a bandpass filter.
9
SCI
Shock detection input pin.
10
TH
Tracking gain time constant setting pin.
11
TA
TA amplifier output pin.
12
TD
-
Pin for configuring the tracking phase compensation constant between the TD and VR pins.
13
TD
Tracking phase compensation setting pin.
14
JP
Tracking jump signal (kick pulse) amplitude setting pin.
15
TO
Tracking control signal output pin.
16
FD
Focusing control signal output pin.
17
FD
-
Pin for configuring the focusing phase compensation constant between the FD and FA pins.
18
FA
Pin for configuring the focusing phase compensation constant between the FD
-
and FA
-
pins.
19
FA
-
Pin for configuring the focusing phase compensation constant between the FA and FE pins.
20
FE
FE signal output pin.
21
FE
-
Pin which connects the FE signal gain setting resistor between this pin and FE pin.
22
AGND
Analog signal GND.
23
SP
CV
+
and CV
-
pins input signal single-end output.
24
SPI
Spindle amplifier input.
25
SPG
12-cm spindle mode gain setting resistor connection pin.
26
SP
-
Spindle phase compensation constant connection pin, along with the SPD pin.
27
SPD
Spindle control signal output pin.
28
SLEQ
Sled phase compensation constant connection pin.
29
SLD
Sled control signal output pin.
30
SL
-
Input pin for sled movement signal from microprocessor.
31
SL
+
Input pin for sled movement signal from microprocessor.
32
JP
-
Input pin for tracking jump signal from DSP.
33
JP
+
Input pin for tracking jump signal from DSP.
34
TGL
Input pin for tracking gain control signal from DSP. Gain is low when TGL is high.
35
TOFF
Input pin for tracking off control signal from DSP. Tracking servo is off when TOFF is high.
36
TES
Output pin for TES signal to DSP.
37
HFL
The High Frequency Level is used to determine whether the main beam is positioned over a bit or over the mirrored
surface.
38
SLOF
Sled servo off control input pin
39
CV
-
Input pin for CLV error signal from DSP.
40
CV
+
Input pin for CLV error signal from DSP.
41
RFSM
RF output pin.
42
RFS
-
RF gain setting and EFM signal 3T compensation constant setting pin, along with the RFSM pin.
43
SLC
Slice Level Control is an output pin that controls the data slice level used by the DSP for the RF waveform.
44
SLI
Input pin used by DSP for controlling the data slice level.
45
DGND
Digital system GND pin.
46
NC
No connection
[FSC]
[Focus search smoothing capacitor output pin.]
47
NC
No connection
48
NC
No connection
49
DEF
Disc defect detection output pin.
50
CLK
Reference clock input pin. 4.23 MHz signal from the DSP is input.
51
CL
Microprocessor command clock input pin.
Continued on next page.
LA9230M/9231M
No.5189 - 4/20
Continued from preceding page.
Pin
No.
Symbol
Contents
52
DAT
Microprocessor command data input pin.
53
CE
Microprocessor command chip enable input pin.
54
DRF
RF level detection output (Detect RF).
55
NC
No connection
56
V
CC
2
Servo system and digital system V
CC
pin.
57
REF1
By-pass capacitor connection pin for reference voltage.
58
VR
Reference voltage output pin.
59
LF2
Disc defect detection time constant setting pin.
60
PH1
RF signal peak hold capacitor connection pin.
61
BH1
RF signal bottom hold capacitor connection pin.
62
LDD
APC circuit output pin.
63
LDS
APC circuit input pin.
64
V
CC
1
RF system V
CC
pin.
LA9230M/9231M
No.5189 - 5/20
Equivalent Circuit Block Diagram
Descriptions enclosed in dotted lines or brackets apply to the LA9231M only.
LA9230M/9231M
No.5189 - 6/20
Test Circuit
Descriptions enclosed in dotted lines or brackets apply to the LA9231M only.
LA9230M/LA9231M
LA9230M/9231M
No.5189 - 7/20
Description of Operation
1.
APC (auto laser power control)
This circuit controls the pickup laser power. The laser is turned on and off by commands from the microprocessor.
2.
RF amplifier (eye pattern output)
The pickup photodiode output current (A + C) is input to FIN2 (pin 1), and (B + D) is input to FIN1 (pin 2). The current that
is input is converted to the voltage, passes through the AGC circuit, and is then output from the RFSM amplifier output
RFSM (pin41). The internal AGC circuit has a variable range of 3 dB, and the time constant can be changed through the
external capacitor connected to PH1 (pin 60). In addition, this circuit also controls the bottom level of the EFM signal
(RFSM output), and the response can be changed through the external capacitor connected to BH1 (pin 61). The center gain
setting for the AGC variable range is set by the resistance between RFSM (pin 41) and RFS
-
(pin 42); if necessary, this
resistance is also used for 3T compensation for the EFM signal.
3.
SLC (slice level control)
The SLC sets the duty ratio for the EFM signal that is input to the DSP to 50%. The DC level is determined by integrating
the EFMO signal output from the DSP to determine the duty factor.
4.
Focus servo
The focus error signal is derived by detecting the difference between (A + C) and (B + D), which is (B + D) - (A + C), and
is then output from FE (pin 20). The focus error signal gain is set by the resistance between FE (pin 20) and FE
-
(pin 21).
The FA amplifier is the pickup phase compensation amplifier, and the equalizer curve is set by the external capacitor and
resistance. Furthermore, this amplifier has a mute function which is applied when V
CC
is turned on, when the F-SERVO OFF
command is sent, and during F-SEARCH. In order to turn the focus servo on, send either the LASER ON command or the
F-SERVO ON command.
The FD amplifier has a phase compensation circuit, a focus search signal composition function, and an offset cancellation
function. Focus search is initiated by the F-SEARCH command, and a ramp waveform is generated by the internal clock.
This waveform is used for focus detection (focus zero cross) with the focus error signal and then turn the focus servo on. The
ramp waveform amplitude is set by the resistance between FD (pin 16) and FD
-
(pin 17). Offset cancellation cancels the IC
offset; adjustment is started by the FOCUS-OFFSET ADJUST START command, and is completed in about 250 ms.
To cancel even the offset for the IV amplifier, etc., it is necessary to send the F-SERVO ON (LASER OFF) command. The
FOCUS-OFFSET ADJUST OFF command is used to return to the state prior to offset cancellation.
For the LA9231M, FCS (pin 46) is for smoothing the focus search ramp waveforms, and a capacitor is connected between
FSC and VR.
5.
Tracking servo
The pickup photodiode output current is input to E (pin 3) and F (pin 4). The current that is input is converted to the voltage,
passes through the balance adjustment VCA circuit and then the VCA circuit that follows the gain in the RFAGC circuit, and
is then output from TE (pin 7). The tracking error gain is set by the resistance between TE
-
(pin6) and TE (pin7).
The TA output (pin 11) has a built-in resistance to allow configuration of a low-pass filter.
The TH amplifier alters the servo response characteristics according to the THLD signal, etc., generated internally after
detection of the TGL signal from the DSP or the JP signal. When a defect is detected, the THLD mode goes into effect
internally. To avoid this, short DEF (pin 49) to L = GND. By inserting an external bandpass filter to remove the shock
component from the tracking error signal at SCI (pin 9), the gain is automatically boosted when a defect is detected.
The TD amplifier performs servo loop phase compensation; the characteristics are set by external CR. Furthermore, this
amplifier has a mute function, which is applied when V
CC
is turned on or the TRACK-SERVO OFF command is issued. The
muting function is released by the TRACK-SERVO ON command.
The TOFF amplifier that is positioned immediately after TD (pin 13) functions to turn off the servo in response to the TOFF
signal from the DSP.
The TO amplifier has a JP pulse composition function and a tracking offset cancellation function. The JP pulse is set by JP
(pin 14). (THLD detection is performed internally.) Offset cancellation is completed in about 30 ms. The TRACK-SERVO
ON command and setting the TOFF pin (pin 35) low are required for offset cancellation.
Note:
The LC78620E TOFF ON/OFF command is valid only when disc motor control is in CLV mode. Accordingly, tracking offset
is cancelled in normal CLV mode. Note that when performed in STOP mode, external control of the TOFF pin is required.
6.
Sled servo
The response characteristics are set by SLEQ (pin 28). The amplifier positioned after SLEQ (pin 28) has a mute function that
is applied either when SLOF (pin 38) goes high or the SLED OFF command is issued. The sled is moved by inputting
current to SL
-
(pin 30) and SL
+
(pin 31); specifically, the pins are connected to the microprocessor output ports via resistors,
and the movement gain is set by the resistance value of that resistor. It is important to note that if there is a deviation in the
resistance values for SL
-
(pin 30) and SL
+
(pin 31), an offset will arise in the SLD output.
7.
Spindle servo
The Configures this servo circuit, which maintains the linear velocity of the disc at a constant speed, along with the DSP.
This circuit accepts signals from the DSP through CV
-
(pin 39) and CV
+
(pin 40) and sets the equalizer characteristics
through SP (pin 23), SP
-
(pin 36), and SPD (pin 27), which are output to SPD (pin 27). The 12-cm mode amplifier gain is
set by the resistor connected between SPG (pin 25) and the reference voltage. In 8-cm mode, this amplifier serves as an
internal buffer, and SPG (pin 25) is ignored. Note that the gain setting is made for 8-cm mode first, and then 12-cm mode. If
SPG (pin 25) is left open, the gain is forcibly set for 8-cm mode, regardless of whether 8-cm or 12-cm mode is in effect.
LA9230M/9231M
No.5189 - 8/20
8.
TES and HFL (traverse signals)
When moving the pickup from the outer track to the inner track, the EF output from the pickup must be connected so that the
phase relationship of TES and HFL is as shown in the diagram below. For the TESI input, the TES comparator has negative
polarity and hysteresis of approximately 100 mV. An external bandpass filter is needed in order to extract only the required
signal from the TE signal.
9.
DRF (luminous energy determination)
DRF goes high when the peak of the EFM signal (RFSM output) held by the PH1 (pin 60) capacitor exceeds approximately
2.1 V. The PH1 (pin 60) capacitor affects the DRF detection time constant and the RFAGC response bidirectional setting.
Pickup position
Focus
10. Focus determination
Focus is assumed to be obtained when the focus error signal S curve reaching REF + 0.2 V is detected, and the S curve
subsequently returns to REF.
Focus
LA9230M/9231M
No.5189 - 9/20
11. DEFECT
The mirrored surface level is maintained by the capacitor for LF2 (pin 59); when a drop in the EFM signal (RFSM output)
reaches 0.35 V or more, a high signal is output to DEF (pin 49). If DEF (pin 49) goes high, the tracking servo enters THLD
mode. In order to prevent the tracking servo from entering THLD mode when a defect is detected, prevent DEFECT from
being output by either shorting DEF (pin 49) to GND, or shorting LF2 (pin 59) to GND. The DEFECT output is driven by
constant current (approximately 100 A).
12. Microprocessor interface
Because the Reset (Nothing) command initializes the LA9230M and the LA9231M, it must be used carefully.
The LA9230M/LA9231M command acceptance (mode switching) timing is defined by the internal clock (4.23 MHz divided
to 130 kHz) after the falling edge of CE (RWC); therefore, when commands are sent consecutively, CE must go low for at
least 10 sec. / The 4.23 MHz clock is required for that reason. 2BYTE-COMMAND DETECT and 2BYTE-COMMAND
RESET are used only for the purpose of masking two-byte data.
All instructions can be input by setting CE high and sending commands synchronized with the CL clock from the
microprocessor to DAT (pin 52) in LSB first format. Note that the command is executed at the falling edge of CE.
13. Reset circuit
The power-on reset is released when V
CC
exceeds approximately 2.8 V.
14. Pattern design notes
To prevent signal jump-in from CV
+
(pin 40) to RFSM (pin 41), a shielding line is necessary in between.
15. V
CC
/REF/GND/NC
V
CC
1 (pin 64)
: RF system
V
CC
2 (pin 56)
: SERVO system, DIGITAL system
AGND (pin 22)
: RF system, SERVO system
DGND (pin 45)
: DIGITAL system
NC (pins 46*, 47, 48, and 55)
: No connection
*Only for LA9230M
EFM signal
(RFSM output)
LF2 (pin 59)
DEF (pin 49)
Timing
*The DSP pin names are shown in parentheses.
LA9230M/9231M
No.5189 - 10/20
Microprocessor Command List
MSB
LSB
Command
Reset mode
Power on mode
DSP
0 0 0 0 0 0 0 0
RESET
RESET(NOTHING)
0 0 0 0 1 0 0 0
FOCUS START
FOCUS START #1
1 1 1 1 0 0 0 0
1 1 1 1 1 0 0 0
1 1 1 1 1 1 1 1
2BYTE-COMMAND DETECT
2BYTE-COMMAND DETECT
2BYTE-COMMAND RESET
2BYTE-COMMAND DETECT
2BYTE-COMMAND DETECT
2BYTE-COMMAND RESET
1 0 0 1 0 0 0 0
FOCUS-OFFSET ADJUST START
--
1 0 0 1 0 0 0 1
FOCUS-OFFSET ADJUST OFF
V
--
1 0 0 1 0 0 1 0
TRACK-OFFSET ADJUST START
--
1 0 0 1 0 0 1 1
TRACK-OFFSET ADJUST OFF
V
--
1 0 0 1 0 1 0 0
1 0 0 1 0 1 0 1
LASER ON
LASER OFF : F-SERVO ON
--
--
1 0 0 1 0 1 1 0
LASER OFF : F-SERVO OFF
V
--
1 0 0 1 0 1 1 1
SPINDLE 8CM
--
1 0 0 1 1 0 0 0
SPINDLE 12 CM
V
--
1 0 0 1 1 0 0 1
SPINDLE OFF
--
1 0 0 1 1 0 1 0
SLED ON
V
--
1 0 0 1 1 0 1 1
SLED OFF
--
1 0 0 1 1 1 0 0
E/F BALANCE START
Nonadjusted
--
1 0 0 1 1 1 0 1
TRACK-SERVO OFF
V
--
1 0 0 1 1 1 1 0
TRACK-SERVO ON
--
Notes Concerning Microprocessor Program Creation
1.
Commands
After sending the FOCUS START command and the E/F BALANCE START command, send 11111110 (FEH) in order to
clear the internal registers of the IC.
Reason: Although the above commands are executed at point 1 in the timing chart below, the same commands will be
executed again at point 2 if there is subsequent input to CE as shown below.
When sending a TRACK-OFFSET ADJUST START command or a FOCUS-OFFSET ADJUST START command after either
V
CC
ON (POWER ON RESET), RESET command, or a corresponding OFFSET ADJUST OFF command, waiting time is
necessary as listed below. (Only when a 4.2 MHz clock is input.)
TRACK-OFFSET ADJUST START: 4 ms or more
FOCUS-OFFSET ADJUST START: 30 ms or more
2.
E/F balance adjustment
E/F balance adjustments should be made in a bit region of the disc, not a mirrored region. (This is because the E/F balance
adjustment entails about 100 to 200 track kicks.)
Since there is no track-kick for LA9231M, measures must be taken during EF balance adjustment to obtain a stable TE
signal. (By a sled movement signal from a microprocessor, for example.)
Timing
2 s or more
1 s or more
10 s or more
1 s or more
2 s or more
``FOCUS START'' command
``E/F BALANCE START'' command
LA9230M/9231M
No.5189 - 11/20
Pin Internal Equivalent Circuit
Pin No., (
): Pin Name
Internal Equivalent Circuit
Pin 1 (FIN2)
Pin 2 (FIN1)
Pin 3 (E)
Pin 4 (F)
Pin 5 (TB)
Pin 6 (TE
-
)
Pin 17 (FD
-
)
Pin 21 (FE
-
)
Pin 26 (SP
-
)
Pin 28 (SLEQ)
Pin 44 (SLI)
Pin 16 (FD)
Pin 27 (SPD)
Pin43 (SLC)
Pin 8 (TESI)
Pin 36 (TES)
Continued on next page.
LA9230M/9231M
No.5189 - 12/20
Continued from preceding page.
Pin No., (
): Pin Name
Internal Equivalent Circuit
Pin 9 (SCI)
Pin 34 (TGL)
Pin 7 (TE)
Pin 10 (TH)
Pin 11 (TA)
Pin 12 (TD
-
)
Pin 13 (TD)
Continued on next page.
LA9230M/9231M
No.5189 - 13/20
Continued from preceding page.
Pin No., (
): Pin Name
Internal Equivalent Circuit
Pin 14 (JP)
Pin 15 (TO)
Pin 18 (FA)
Pin 19 (FA
-
)
Pin 20 (FE)
Continued on next page.
LA9230M/9231M
No.5189 - 14/20
Continued from preceding page.
Pin No., (
)Pin Name
Internal Equivalent Circuit
Pin 24 (SPI)
Pin 25 (SPG)
Pin 29 (SLD)
Pin 30 (SL
-
)
Pin 31 (SL
+
)
Pin 32 (JP
-
)
Pin 33 (JP
+
)
Pin 35 (TOFF)
Continued on next page.
LA9230M/9231M
No.5189 - 15/20
Continued from preceding page.
Pin No., (
): Pin Name
Internal Equivalent Circuit
Pin 37 (HFL)
Pin 49 (DEF)
Pin 54 (DRF)
* Pin 46 (FSC)
[LA9231M only]
Pin 38 (SLOF)
Pin 39 (CV
-
)
Pin 40 (CV
+
)
Pin 23 (SP)
Pin 42 (RF
-
)
Pin 50 (CLK)
Continued on next page.
LA9230M/9231M
No.5189 - 16/20
Continued from preceding page.
Pin No., (
): Pin Name
Internal Equivalent Circuit
Pin 51 (CL)
Pin 52 (DAT)
Pin 53 (CE)
Pin 57 (REFI)
Pin 58 (VR)
Pin 59 (LF2)
Pin 41 (RFSM)
Pin 60 (PH1)
Pin 61 (BH1)
Continued on next page.
LA9230M/9231M
No.5189 - 17/20
Continued from preceding page.
Pin No., (
): Pin Name
Internal Equivalent Circuit
Pin 62 (LDD)
Pin 63 (LDS)
LA9230M/9231M
No.5189 - 18/20
Sample Application Circuit
Pin descriptions enclosed in dotted lines or brackets apply to the LA9231M only.
LA9230M/9231M
No.5189 - 19/20
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment,
nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or
indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors
and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and
expenses associated with such use:
2
Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO
ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume
production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use
or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of September, 1995. Specifications and information herein are subject to change without notice.
LA9230M/9231M
No.5189 - 20/20
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