TC9316F digital tuning DTS integrated circuit

Published:2011/4/25 9:14:00 Author:TaoXi | Keyword: digital tuning, DTS | From:SeekIC

The TC9316F is produced by the Toshiba company, this device is one kind of DTS integrated circuits and is designed for the digital tuning radio, you can input the radio frequency directly, and it can presets 24 radio programs. 1.TC9316F circuit functions The built-in LCD driver of TC9136F can output 1/4 duty cycle, 1/3 bias, the repetition frequency is 125Hz drive pulse segment. It has PLL9lKHz, 10KHz reference frequencies and 75kHz, 15OKHz crystal oscillator to choice, the program controls the reference frequency, the command execute time is 80μS and 40μs. The PLL circuit includes the second division mathematical model's FM prescaler, the 4-bit frequency counter, 12-bit programmable divider, and the phase comparator.etc functions, and this circuit sets up a special 16-bit general-purpose IF counter. 2.TC9316F typical application circuit The TC9316F typical application circuit is shown as figure 1, use the keyboard matrix to set 19 operation keys. If we use the diode as the jumper, there are 32 operation keys to set. Figure 1. The TC9316F typical application circuit The TC9316F connected with the front circuit by 12 leads. (1)BO, B1 connected with the external decoder, it used to control the band selection, if one wave band has no channel, you should focus on checking this circuit. (2)OWER can be used to start the power, if there is no high-level signal sent out by the TC9316F, the radio circuit will not work. Table 1. The pin functions and data tables of the TC9316F IC



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