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TC9324F Arkusz danych(PDF) 8 Page - Toshiba Semiconductor |
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TC9324F Arkusz danych(HTML) 8 Page - Toshiba Semiconductor |
8 / 101 page TC9324F 2002-02-08 8 Pin No. Symbol Pin Name Function and Operation Remarks 70 71 IFIN1/IN1 IFIN2/IN2 IF signal inputs /input port IF signal input pins for the IF counter to count the IF signals of the FM and AM bands and detect the automatic stop position. The input frequency is in the range 0.3 to 20 MHz. A built-in input amp and capacitive coupling support low-amplitude operation. The IF counter is a 20-bit counter with selectable gate times of 1, 4, 16, and 64 ms. 20 bits of data can be easily stored in memory. In Manual mode, the gates can be switched on and off by instruction. These input pins can also be programmed as an input port (IN port). At that time, they become CMOS inputs and the clocks of those inputs can be counted using the IF counter. Note: Pins set as IF input go Low in PLL Off mode. 73 FMIN FM local oscillation signal input 74 AMIN AM local oscillation signal input Programmable counter input pins for the FM/AM band. Their input mode can be switched by software among 1/2 + pulse swallow (VHF/FM) mode for FM input, and pulse swallow (HF) or direct division (LF) mode for AM input. The local oscillation output (voltage-controlled oscillator or VCO output) is normally input at the following frequencies: 50 to 230 MHz in VHF mode, 50 to 140 MHz in FM1 mode, 10 to 60 MHz in FM2 mode, 1 to 30 MHz in HF mode, and 0.5 to 20 MHz in LF mode. A built-in input amp and capacitive coupling support low-amplitude operation. Note: In PLL Off mode or when the pins are not set for input, the input goes to high impedance. 75 VPLL PLL constant voltage output Constant voltage output for the PLL. The PLL constant voltage is used as the power supply for the PLL and IF counter. In PLL On mode, the constant voltage power supply is 3.55 V (typ.). In PLL Off mode, the VDD is output. Connecting a capacitor (0.1 µF, 10 µF typ.) stabilizes the power supply. VDD RFIN VDD RFIN VDD RFIN VPLL |
Podobny numer części - TC9324F |
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Podobny opis - TC9324F |
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