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PDF TC9457F Data sheet ( Hoja de datos )
| Número de pieza | TC9457F | |
| Descripción | Firmware Built In Digital Servo | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TC9457F (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9457F
Firmware Built In Digital Servo
TC9457F
The TC9457F is a firmware incorporating CD digital servo
system. In addition to an LCD/LED driver, 4-channel 6-bit AD
converters, and 2-wire/3-wire serial interface, it has a buzzer
function, interrupt function, and 8-bit timer/counter. The CPU
allows selection of the operating clock from three types of crystal
oscillators (16.9344 MHz, 4.5 MHz, and 75 kHz), making
interfacing with a CD easy. The CD digital servo incorporates
various functions and circuits required for CD systems. These
include sync separation protection and interpolation, EFM
demodulation, error correction, digital equalizer for servoing, and
a servo control circuit. Furthermore, it contains a 1-bit DA
converter, so that when combined with the digital servo head
amp TA2109F, it allows you to create a maintenance-free,
extremely simple CD player system.
Weight: 1.6 g (typ.)
Features
· CMOS−technology DTS microcontroller LSI incorporating a CD digital servo and LCD/LED driver
· Operating supply voltage:
When CD is operating, VDD = 4.5 to 5.5 V (5.0 V typ.)
When CD is turned off, VDD = 2.7 to 5.5 V (CPU operating)
· Current consumption:
When CD is operating, IDD = 55 mA (typ.)
When CD is turned off, IDD = 2 mA (typ.) (using 4.5 MHz crystal; CPU operating)
When CD is turned off, IDD = 0.1 mA (using 75 kHz crystal; CPU operating)
· Operating temperature range: Ta = −40 to 85 °C
· Firmware
· Instruction execution time: 1.89/1.78/107 µs
· Crystal oscillator frequency: 16.9344 MHz/4.5 MHz/75 kHz
· AD converter: 6 bits, 4 channels
· LCD driver: 1/4 duty, 1/2 biased, maximum 72 segments
· LED driver: 4 digits × maximum 14 segments (shared with LCD driver in software)
· Timer/counter: 8 bits (timer clock selectable from INTR1, INTR2, instruction cycle, or 1 kHz)
· Serial interface: 3-wire/2-wire interface (data length: 4 or 8 bits)
· Buzzer: 0.625 to 3 kHz (8 types) ; 4 modes available-continuous, single, 10 Hz intermittent, and 10 Hz
intermittent at 1 Hz interval
· Interrupt: 1 external, 3 internal (CD subing synchronous, serial interface, 8 bits timer)
1 2002-10-21
1 page  
Description Of Pin Function
Pin No.
1~10
11
12
13
14
15
16
17
18
21~24
Symbol
Pin Name
Function And Operation
S1/OT5
~
S10/OT14
S11/OT15
/CLCK
S12/OT16
/DATA
S13/OT17
/SFSY
S14/OT18
/LRCK
S8-0/S15
/BCK
P8-1/S16
/AOUT
P8-2/S17
/MBOV
P8-3/S18
/IPF
P1-0~P1-3
/K0~K3
LCD segment
outputs
/Output ports
Segment signal outputs to the LCD panel.
Up to 72 segments in a matrix with COM1 to COM4 can
be displayed.
All of the S1 to S18 pins can be switched for output ports
by a program (Note 1). Also, the S15 to S18 pins each
can be switched for I/O ports individually. When set for I/O
ports, these pins become Nch open-drain outputs.
Furthermore, the S11 to S14 and the P8-0 to P8-3 pins
can be switched for use as CD signal (CLCK to IPF)
input/output pins by a program.
LCD segment
outputs
/Output ports
/CD signals
· CLCK : Subcodes P thru W data readout clock
input/output.
Selected between input and output by
a command.
· DATA : Subcodes P thru W data output.
· SFSY : Playback system frame sync
signal output.
· LRCK : Channel clock (44.1 kHz) output. It
outputs a low for L channel and a high
for R channel. Polarity can be inverted
by a command.
· BCK : Bit clock (1,4112 MHz) output.
· AOUT : Audio data output.
· MBOV : Buffer memory-over signal output.
It outputs a high when buffer overflows.
I/O ports
/LCD segment
outputs
/CD signals
· IPF
: Correction flag output. When AOUT is
C2 correction output, it outputs a high
indicating that correction is impossible.
For CD signal output, set parameters OT for output and
LEDon = 1.
Furthermore, when set for output ports, the buffer
capability can be increased by setting the LEDon bit to 1,
so that it can be used as an LED driver. These pins
normally are used for LED segment outputs. Since the
output ports can increment OT1 through OT18 by an
instruction, data in external RAM/ROM can be accessed
easily.
Note 1: After a system reset, the output port shared pins
are set for LCD output and the I/O port shared
pins are set for I/O port input.
I/O port 1
/Key input
ports
4-bit CMOS I/O ports.
These ports can be set for input or output bit for bit by a
program.
These pins can be pulled up to VDD or down to GND by a
program. Therefore, they can be used as key input pins.
Also, when they are set for I/O port input, a change of
state in this input can be used to clear the clock stop or
wait mode.
TC9457F
Remarks
―
―
―
―
―
―
―
―
―
―
5 2002-10-21
5 Page 
TC9457F
VDD (CD unit power supply)
Characteristics
Operating supply voltage
Operating supply current
Crystal oscillation frequency
Symbol
VDD
IDD
fXT
Test
Circuit
Test Condition
Min Typ. Max
― MVDD ≥ VDD
(Note 5) 4.5
―
When 16.9344 MHz crystal
connected
―
5.0
50
5.5
60
―
Rout = 0 Ω, Ci = Co = 15 pF
(Note 5, 6)
― 16.9344
―
Unit
V
mA
MHz
Note 5: Guaranteed at VDD = MVDD = 4.5 to 5.5 V and Ta = −40 to 85°C
Note 6: Consider the crystal resonator used in your system when determining constants, etc.
LCD Common Output (COM1/OT1 to COM4/OT4)
Characteristics
Output current
High level
Low level
Symbol
IOH2
IOH5
IOL2
IOL5
Test
Circuit
Test Condition
VOH = 4.5 V (When LCD
― output, settings OT output,
LEDon = 0)
―
VOH = 4.5 V (Settings OT
output, LEDon = 1)
VOL = 0.5 V (When LCD
― output, settings OT output,
LEDon = 0)
―
VOL = 0.5 V (Settings OT
output, LEDon = 1)
Min Typ. Max Unit
−0.1 −0.2 ―
−20 −40
―
mA
0.1 0.2 ―
4 10 ―
Output voltage 1/2 level
VBS
― Nonloaded (when LCD output) 2.1 2.3 2.5
V
Segment Output (S1/OT4 to S10/OT14, S11/OT15 to P8-0/S14 to P8-3/S18)
Characteristics
Output current
High level
Low level
Symbol
IOH1
IOH4
IOL1
IOL5
Test
Circuit
Test Condition
VOH = 4.5 V
― (When LCD output, settings
OT output, LEDon = 0)
VOH = 4.5 V
― (Settings OT output,
LEDon = 1, I/O port)
VOL = 0.5 V
― (When LCD output, settings
OT output, LEDon = 0)
VOL = 0.5 V
― (Settings OT output,
LEDon = 1, I/O port)
Min Typ. Max Unit
−0.05 −0.1 ―
−2 −4 ―
mA
0.05 0.1
―
5 10 ―
Input leakage current
Input voltage
High level
Low level
ILI
―
VIH = 5.0 V, VIL = 0 V
(P8-0 to P8-3)
VIH ― (P8-0 to P8-3)
VIL ― (P8-0 to P8-3)
― ― ±1.0 µA
MVDD
× 0.8
~
MVDD
V
0
~
MVDD
× 0.2
11 2002-10-21
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TC9457F.PDF ] | |
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