Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
MC145162D1 Datasheet(PDF) 6 Page - Motorola, Inc |
|
MC145162D1 Datasheet(HTML) 6 Page - Motorola, Inc |
6 / 24 page MC145162 •MC145162–1 MOTOROLA 6 PIN DESCRIPTIONS INPUT PINS OSCin /OSCout Reference Oscillator Input/Output (Pins 7, 8) These pins form a reference oscillator when connected to an external parallel–resonant crystal. Figure 6 shows the relationship of different crystal frequencies and reference frequencies for cordless phone applications in various coun- tries. OSCin may also serve as input for an externally gen- erated reference signal which is typically ac coupled. MCUCLK System Clock (Pin 5) This output pin provides a signal of the crystal frequency (OSCout) divided by 3 or 4 that is controlled by a bit in the control register. This signal can be a clock source for the MCU or other sys- tem clocks. ADin, Din, CLK, ENB Auxiliary Data In, Data In, Clock, Enable (Pins 2, 3, 1, 4) These four pins provide an MCU serial interface for pro- gramming the reference counter, the transmit–channel count- er, and the receive–channel counter. They also provide various controls of the PLL including the power saving mode and the programming format. TxPS/fTx, RxPS/fRx Transmit Power Save, Receive Power Save (Pins 13, 11) For a normal application, these output pins provide the status of the internal power saving mode operation. If the transmit–channels counter circuitry is in power down mode, TxPS/fTx outputs a high state. If the receive–channels counter circuitry is in power down mode, RxPS/fRx is set high. These outputs can be applied for controlling the external pow- er switch for the transmitter and the receiver to save MCU control pins. In the Tx/Rx channel counter test mode, the TxPS/fTx and RxPS/fRx pins output the divided value of the transmit channel counter (fTx) and the receive channel counter (fRx), respectively. This test mode operation is controlled by the control register. Details of the counter test mode are in the Tx/ Rx Channel Counter Test section of this data sheet. fin–T/fin–R Transmit/Receive Counter Inputs (Pins 14, 9) fin–T and fin–R are inputs to the transmit and the receive counters, respectively. These signals are typically driven from the loop VCO and ac coupled. The minimum input signal level is 200 mV p–p @ 60.0 MHz. OUTPUT PINS TxPDout/RxPDout Transmit/Receive Phase Detector Outputs (Pins 15, 10) These are three–state outputs of the transmit and receive phase detectors for use as loop error signals (see Figure 7 for phase detector output waveforms). Phase detector gain is VDD/4 π volts per radian. Frequency fV > fR or fV leading: output = negative pulse. Frequency fV < fR or fV lagging: output = positive pulse. Frequency fV = fR and phase coincidence: output = high– impedance state. NOTE: fR is the divided–down reference frequency at the phase detector input and fV is the divided–down VCO frequency at the phase detector input. LD Lock Detect (Pin 16) The lock detect signal is associated with the transmit loop. The output at a high level indicates an out–of–lock condition (see Figure 7 for the LD output waveform). POWER SUPPLY VDD Positive Power Supply (Pin 12) VDD is the most positive power supply potential ranging from 2.5 to 5.5 V with respect to VSS. VSS Negative Power Supply (Pin 6) VSS is the most negative supply potential and is usually connected to ground. M (14 BITS) OSCout OSCin D C B A fR2 fR1 N (12 BITS) 4 25 Crystal N Value fR1 →B fR2 →C 11.150 MHz 446 6.25 kHz 1.0 kHz 11.150 MHz 223 12.5 kHz 10.240 MHz 512 5.0 kHz 12.000 MHz 600 5.0 kHz Figure 6. Reference Frequencies for Cordless Phone Applications of Various Countries |
Número de pieza similar - MC145162D1 |
|
Descripción similar - MC145162D1 |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |