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TC9457F
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9457F
Firmware Built In Digital Servo
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
inter
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TC9457F CD digital servo system Capable of decoding text data. Sure and reliable sync pattern detection, sync signal protection, and interpolation. Contains EFM demodulator circuit and subcode demodulator circuit. CIRC logical equations to provide high correction capability: dual C1 correction and quadruple C2 correction. Supports variable-speed playback. Jitter absorbing capability of +6 frames. Contains 16 KB RAM. Contains Digital OUT circuit. Contains
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TC9457F Pin Connection Diagram 3 2002-10-21
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TC9457F Block Diagram 4 2002-10-21
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TC9457F Description Of Pin Function Pin No. Symbol Pin Name Function And Operation Remarks S1/OT5 LCD segment Segment signal outputs to the LCD panel. 1~10 ~ outputs Up to 72 segments in a matrix with COM1 to COM4 can ― S10/OT14 /Output ports 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 S11/OT15 can be switched for I/O ports individually. When set for I/O 11 ― /CLCK ports, these pins become Nch open-drain
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TC9457F Pin No. Symbol Pin Name Function And Operation Remarks 5-bit CMOS I/O ports. These ports can be set for input or output bit for bit by a program. The P3-0 to P4-0 pins serve dual purposes as analog 25 P3-0/DCREF inputs for the internal 6-bit 4-channel AD converters. I/O port 3 The internal AD converters can complete conversion in 6 /AD analog instruction cycles using a successive approximation reference method. The required pins can be set for AD analog
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TC9457F Pin No. Symbol Pin Name Function And Operation Remarks Subcode Q data CRCC determination result output pin. It 45 SBOK ― outputs a high when CRCC check is found OK. CD unit's digital block power supply pins. Normally, apply 5 V to V . DD 46, 75 V ― DD When not using a CD (CD off), this power supply can be turned off, with only the controller power supply kept active, so that the controller alone is operating. In this case, the CDoff bit must be set to 1. When this bit is set
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TC9457F Pin No. Symbol Pin Name Function And Operation Remarks APC circuit on/off signal output pin. When laser is on, this 74 SEL pin goes to a high-impedance state when UHS = low and ― outputs a high when UHS = high. 77 XV CD's crystal oscillator power supply pins. Normally, ― SS connect these pins to the power supply lines that are used 80 XV ― DD in common for the V and V pins. DD SS CD's crystal oscillator input/output pins. Normally, connect 78 XI ― 16.9344 MHz here. This clock
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TC9457F Pin No. Symbol Pin Name Function And Operation Remarks External interrupt input pin. When the interrupt facility is enabled and a pulse of 1.11 to 2.22 µs in duration is applied to this pin, an interrupt is generated and the program jumps to address 1. Input logic and the active edge (rise or fall) can be External selected for each interrupt input. 92 INTR ― interrupt input Also, the internal 8-bit timer clock can be chosen for this interrupt input, in which case it is possib
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TC9457F Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Power supply voltage V −0.3~6.0 V DD Input voltage V −0.3~V + 0.3 V IN DD Power dissipation P 1400 mW D Operating temperature T −40~85 °C opr Storage temperature T −65~150 °C stg Electrical Characteristics (Ta = 25°C, V = MV = AV = DV = XV = 5 V, DD DD DD DD DD 2V = P2V = 4.2 V, V = PV = 2.1 V, unless otherwise specified) REF REF REF REF MV (CPU unit power supply) DD Test Characteristics Symbol Test Condition Mi
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TC9457F V (CD unit power supply) DD Test Characteristics Symbol Test Condition Min Typ. Max Unit Circuit Operating supply voltage V ― MV ≥ V (Note 5)4.5 5.0 5.5 V DD DD DD When 16.9344 MHz crystal Operating supply current I ― ― 50 60 mA DD connected Rout = 0 Ω, Ci = Co = 15 pF Crystal oscillation frequency f ― ― 16.9344 ― MHz XT (Note 5, 6) Note 5: Guaranteed at V = MV = 4.5 to 5.5 V and Ta = −40 to 85°C DD DD Note 6: Consider the crystal resonator used in your system when determining
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TC9457F I/O Ports (P1-0 to P4-3) Test Characteristics Symbol Test Condition Min Typ. Max Unit Circuit High level I ― V = 4.5 V −1 −2 ― OH3 OH V = 0.5 V OL Output current mA I ― 1.5 3.0 ― OL3 (exclude P4-1, 2, 3 pin) Low level I ― V = 0.5 V (P4-1, 2, 3 pin) 4 10 ― OL5 OL Input leakage current I ― V = 5.0 V, V = 0 V ― ― ±1.0 µA LI IH IL MV DD High level V ― ― ~ MV IH DD × 0.8 Input voltage V MV DD Low level V ― ― 0 ~ IL × 0.2 (P1-0 to P1-3) When pulldown, Input pullup/down resistanc
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TC9457F DOUT, SBSY, SBOK, SEL, HSO, SPCK, SPDA, COFS Outputs Test Characteristics Symbol Test Condition Min Typ. Max Unit Circuit High level I ― V = 4.5 V −2 −4 ― OH4 OH Output voltage mA Low level I ― V = 0.5 V 2 4 ― OL4 OL PDO, TMAX, RFGC, TEBC, DMO Outputs Test Characteristics Symbol Test Condition Min Typ. Max Unit Circuit High level I ― V = 3.8 V −1.0 −2.0 ― OH6 OH Output voltage mA Low level I ― V = 0.5 V 3.0 6.0 ― OL4 OL Propagation Delay Time (AOUT, SPDA, DATA, SBSY, SBOK
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TC9457F Package Dimensions Weight: 1.6 g (typ.) 14 2002-10-21
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TC9457F RESTRICTIONS ON PRODUCT USE 000707EBA TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunct
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