Akai 14CT01 & 21CT21FS & 29CT42FSQ free download

File name 14CT01 & 21CT21FS & 29CT42FSQ.pdf

COLOUR TV SET Model: www.akai.ru 1 Technology Specification and Feature 2. The survey Table 1, the main IC and functions Number Function IC Remark 1 Power supply KA5Q0765RT N501 2 CPU + SIGNAL PROCESSER TDA93x1 N301 3 Field driver LA78040/STV9302A N401 4 Sound processor TDA9859 N122 5 Sound driver AN17821A N161 6 AV SWITCH TC4052BP N801 (Video) 7 Memory AT24C08 N702 8 Photo-coupler HS817B N504 9 IR-receiver HS0038A U701 10 8V Regulator L7808CV N503 11 5V Regulator L7805CV N505 3. The main chips instruction 1. TDA93X1 The UOC ("Ultimate One Chip") TDA93X1 is adopted in this chassis. This IC is the first available component that contains the complete control and small signal functionality needed for a TV application in one device. The UOC TDA93X1 pins function descriptiontotal 64 pins Pin1: Standby control," 1" is on," 0" is off. Pin2: SCL. Pin3: SDA. Pin4: Tuning PWM output. Pin5: Auto AV control SW/NTSC SW, Pin6: Key board input. Pin7: Volume Pin8: Mute control," 1" is mute," 0" is off. Pin9: Pin12Pin18Pin30Pin35Pin41Pin55: GND. Pin10: BAND1 control output. Pin11: BAND2 Pin12: GND Pin13: SECAM PLL, connected with a capacitance. 2 Pin14: +8V power source supply. Pin15: Using a capacitor of 220n in series to GND, This pin decouples the internal digital supply voltage of the video processor and minimizes the disturbance to the sensitive analogue parts. Pin16: PHI-2 control loop, this pin requires a capacitor at 2.2nF (C) in series to GND. Pin17: PHI-1 control loop, the loop filter connected to pin 17 is suitable for various signal conditions like strong/weak and VCR signal. This is achieved by switching of the loop filter time constant by changing the PHI-1 output current. Pin18: GND. Pin19: Bandgap decoupling, the bandgap circuit provides a very stable and temperature independent reference voltage. This reference voltage (4.0 V) ensures optimal performance of the analogue video processor part of the N301 and is used in almost all functional circuit blocks. Pin20: East-west pillow signal output. Pin21: Pin22Vertical drive output. Pin23: Pin24IF input Pin25: Reference current, This pin requires a resistor to ground. The opti