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TSA6060T Folha de dados(PDF) 4 Page - NXP Semiconductors |
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TSA6060T Folha de dados(HTML) 4 Page - NXP Semiconductors |
4 / 16 page 1995 Nov 23 4 Philips Semiconductors Product specification Fast radio tuning PLL frequency synthesizer TSA6060 PINNING SYMBOL PIN DESCRIPTION INCLK 1 in-lock detector output XTAL 2 crystal reference oscillator input VCC1 3 supply voltage (PLL supply 1) VEE 4 ground FMI 5 FM VCO input DEC 6 prescaler decoupling AMI 7 AM VCO input BS 8 band switch output fref 9 40 kHz reference output SDA 10 serial data input (I2C-bus) SCL 11 serial clock input (I2C-bus) AS 12 address select input (I2C-bus) FMO 13 FM output for external loop filter LOOPI 14 tuning voltage amplifier input AMO 15 AM output for external loop filter VCC2 16 supply voltage (PLL supply 2) Fig.2 Pin configuration. FUNCTIONAL DESCRIPTION The TSA6060 contains the following parts: • Separate input amplifiers for the AM and FM VCO signals. • A 17-bit programmable counter. • A digital memory phase detector. • A reference frequency channel which contains a 4 MHz or 8 MHz crystal oscillator which is followed by a reference counter. The reference frequency can be either 1, 5, 10 or 50 kHz and is applied to the digital memory phase detector. The reference counter can also output a 40 kHz reference frequency to pin 9 for communication between the FM/IF system and the microcontroller-based tuning interface IC (TEA6100). • A programmable current amplifier (charge pump) which consists of a 25 mA and a 500 mA current source. This allows adjustment of the loop gain thereby providing high-current high-speed tuning and low-current stable tuning. • A one-input-two-output tuning voltage amplifier. One output is connected to the external AM loop filter and the other output to the external FM loop filter. Under software control, the AM output is switched to a low impedance to ground by the FM/AM switch in the FM position. The FM output is switched to a low impedance to ground by the AM/FM switch in the AM position. The outputs can deliver a tuning voltage of up to 10.5 V. • An I2C-bus interface with data latches and control logic. The I2C-bus is intended for communication between microcontrollers and different ICs or modules. Detailed information concerning the I2C-bus specification is available on request. • A software controlled band switch output. Controls The TSA6060 is controlled via the 2-wire I2C-bus. For programming there is one module address, a logic 0 (R/W bit) and four data bytes. The module address contains an address select bit (AS) which enables two TSA6060s to be operated in one system. The auto-increment facility of the I2C-bus allows programming of the TSA6060 within one transmission (address + 4 data bytes). The TSA6060 can also be partially programmed. Transmission must then be ended by a STOP condition. |
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