Ordering number : EN*5536A
CMOS LSI
LC89170M
CD Player Text Data IC
Preliminary
Overview
The LC89170M is an IC that decodes the text data, such
as song names, stored in subcode channels R to W of a
compact disk’s read-in area.
Package Dimensions
unit: mm
3111-MFP14S
[LC89170M]
Features
• Accepts the channel R to W subcode data through a
subcode interface.
• Can continuously output the channel R to W data for
each 1PACK24 symbol.
• Performs error detection (cyclic redundancy code) and
outputs both the data and the result of that check.
• Provides synchronization protection for the subcode
interface.
• Supports low-voltage operation (3.3 V)
• Provided in the miniature MFP-14S package.
SANYO: MFP14S
Specifications
Absolute Maximum Ratings
at Ta = 25
°C,
V
SS
= 0 V
Parameter
Maximum supply voltage
I/O voltages
Input current
Operating temperature
Storage temperature
Symbol
V
DD
max
V
I
V
O
I
I
Topr
Tstg
Conditions
Ratings
–0.3 to +7.0
–0.3 to V
DD
+ 0.3
±10
–30 to +70
–55 to +125
Unit
V
V
mA
°C
°C
Recommended Operating Conditions
at Ta = 25
°C,
V
SS
= 0 V
Parameter
Supply voltage
Operating temperature
Symbol
V
DD
Topr
Conditions
Ratings
min
3.0
–30
typ
5.0
max
5.5
+70
Unit
V
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
93096HA (OT) No. 5536-1/8
LC89170M
Block Diagram
Pin Assignment
Pin Functions
Pin no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
EXCK
SBSO
SCOR
WFCK
MCK
XMODE
GND
TEST
SW1
SW2
SCLK
SRDT
DQSY
V
DD
I
I
I
I
O
O
I/O
I/O
I
I
I
I
I
Subcode interface shift clock input and output
Subcode interface data input
Subcode interface block synchronization input
Subcode interface frame synchronization input
Clock input (16.9344 MHz)
System reset and low power mode
Ground
Test pin (Must be connected to ground in normal operation.)
EXCK I/O setting (L: clock output, H: clock input)
EXCK clock output pulse width selection (L: double speed support, H: normal speed)
Command interface shift clock input
Command interface data output
Command interface readout enable output
Power supply
Function
No. 5536-2/8
LC89170M
DC Characteristics
DC Characteristics (1)
at Ta = –30 to +70°C, V
DD
= 4.5 to 5.5 V, V
SS
= 0 V
Parameter
Symbol
CMOS compatible; 1*
CMOS compatible Schmitt; 2*
CMOS compatible; 1*
CMOS compatible Schmitt; 2*
I
OH
= –2 mA; 3*
I
OH
= 2 mA; 3*
V
DD
= 5 V, Ta = 25°C, MCK = 16.93 MHz
V
DD
= 5 V, XMODE = [L]
0.8
60
V
DD
–2.1
0.4
1.6
120
Conditions
Ratings
min
0.7 V
DD
0.8 V
DD
0.3 V
DD
0.2 V
DD
typ
max
Unit
V
V
V
V
V
V
mA
µA
Input high-level voltage
V
IH
V
IL
V
OH
V
OL
I
DD
Input low-level voltage
Output high-level voltage
Output low-level voltage
Current drain
Note: 1. The MCK, TEST, SW1, and SW2 pins
2. The EXCK, SBSO, SCOR, WFCK, XMODE, and SCLK pins
3. The EXCK, SRDT, and DQSY pins
DC Characteristics (2)
at Ta = –30 to +70°C, V
DD
= 3.0 to 3.6 V, V
SS
= 0 V
Parameter
Symbol
CMOS compatible; 1*
CMOS compatible Schmitt; 2*
CMOS compatible; 1*
CMOS compatible Schmitt; 2*
I
OH
= –1 mA; 3*
I
OH
= 1 mA; 3*
V
DD
= 3.3 V, Ta = 25°C, MCK = 16.93 MHz
V
DD
= 3.3 V, XMODE = [L]
0.5
25
V
DD
–0.8
0.4
1.0
50
Conditions
Ratings
min
0.7 V
DD
0.75 V
DD
0.2 V
DD
0.15 V
DD
typ
max
Unit
V
V
V
V
V
V
mA
µA
Input high-level voltage
V
IH
V
IL
V
OH
V
OL
I
DD
Input low-level voltage
Output high-level voltage
Output low-level voltage
Current drain
Note: 1. The MCK, TEST, SW1, and SW2 pins
2. The EXCK, SBSO, SCOR, WFCK, XMODE, and SCLK pins
3. The EXCK, SRDT, and DQSY pins
AC Characteristics
• The MCK pin
AC Characteristics (1)
at Ta = –30 to +70°C, V
DD
= 3.0 to 5.5 V, V
SS
= 0 V
Parameter
High-level pulse width
Low-level pulse width
Pulse period
Rise and fall times
Symbol
t
WH
t
WL
t
C
t
R
, t
F
Conditions
Ratings
min
25
25
58
typ
max
56
56
100
12
Unit
ns
ns
ns
ns
No. 5536-3/8
LC89170M
• The SCOR and WFCK pins
AC Characteristics (2)
at Ta = –30 to +70°C, V
DD
= 3.0 to 5.5 V
Parameter
Subcode block period
Subcode frame period
Subcode block synchronization pulse width
Subcode frame synchronization High-level pulse width
pulse width
Low-level pulse width
Symbol
T
B
T
F
T
BW
t
HW
t
LW
Conditions
Ratings
min
6.0
60
60
4.0
1.5
68
68
typ
13.3
136
max
14.7
150
300
Unit
ms
µs
µs
µs
µs
• The EXCK and SBSO pins
AC Characteristics (3)
at Ta = –30 to +70°C, V
DD
= 3.0 to 5.5 V
Parameter
Symbol
t
HPW
t
HPW
t
LPW
t
LPW
t
CD
t
CD
t
RX
, t
FX
t
PAC
t
HD
0
3
Conditions
[SW1] = [L]
[SW1] = [H]
[SW1] = [L]
[SW1] = [H]
[SW1] = [L]
[SW1] = [H]
Ratings
min
0.9
2
0.9
2
10
0.4
30
10
4
4
typ
max
6.4
6
6.4
6
32
Unit
µs
µs
µs
µs
µs
µs
µs
µs
µs
High-level pulse width
Synchronization clock
pulse width
Low-level pulse width
Shift clock delay time
Shift clock rise and fall times
P data access time
Data hold time
• The SCLK, SRDT, and DQSY pins
AC Characteristics (4)
at Ta = –30 to +70°C, V
DD
= 3.0 to 5.5 V
Parameter
Readout period
DQSY pulse width
SCLK low-level pulse width
SCLK high-level pulse width
SCLK delay time
Data delay time
Data delay time
Symbol
t
CW
t
W
t
WL
t
WH
t
D1
t
D2
t
D3
Conditions
Ratings
min
1.5
60
100
100
100
50
50
typ
3.3
136
max
3.7
150
Unit
ms
µs
ns
ns
ns
ns
ns
No. 5536-4/8
LC89170M
Functional Description
• Subcode interface
The LC89170M accepts subcode data from the DSP using the EXCK, SBSO, SCOR, and WFCK pins. Figure 1 shows
the timing.
Figure 1 Subcode Interface Timing
SW1 sets the input or output state for the EXCK pin. This pin is provided for cases where a subcode interface shift clock
source, such as a CD-G decoder circuit, is present in the vicinity of the LC89170M. Figure 2 shows usage examples.
Figure 2 SW1 Usage Examples
The SW2 is selected according to the subcode block period, TB, input to the SCOR pin.
SW2 Selection
SW2
[L]
[H]
Function
Supports up to double speed playback
Only supports normal-speed playback
T
B
6.65
13.3
Unit
ms
ms
No. 5536-5/8
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