 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MC13110A Datasheet(PDF) 51 Page - Motorola, Inc |
|
|
|||||||||||||||||||||||||||||
MC13110A Datasheet(HTML) 51 Page - Motorola, Inc |
|
|
51 / 68 page  MC13110A/B MC13111A/B 51 MOTOROLA ANALOG IC DEVICE DATA Figure 122. Clock Output Divider MPU Clk Bit #2 MPU Clk Bit #1 MPU Clk Bit #0 Clk Out Divider Value 0 0 0 2 0 0 1 3 0 1 0 4 0 1 1 5 1 0 0 2.5 1 0 1 20 1 1 0 80 1 1 1 312.5 MPU “Clk Out” Power–Up Default Divider Value The power–up default divider value is “divide by 5”. This provides a MPU clock of about 2.0 MHz after initial power–up. The reason for choosing a relatively low clock frequenc y at initial power–up is bec aus e some microprocessors operate using a 3.0 V power supply and have a maximum clock frequency of 2.0 MHz. After initial power–up, the MPU can change the clock divider value and set the clock to the desired operating frequency. Special care was taken in the design of the clock divider to insure that the transition between one clock divider value and another is “smooth” (i.e. there will be no narrow clock pulses to disturb the MPU). MPU “Clk Out” Radiated Noise on Circuit Board The clock line running between the MC13110A/B or MC13111A/B and the microprocessor has the potential to radiate noise. Problems in the system can occur, especially if the clock is a square wave digital signal with large high frequency harmonics. In order to minimize the radiated noise, a 1000 Ω resistor is included on–chip in series with the “Clk Out” output driver. A small capacitor or inductor with a capacitor can be connected to the “Clk Out” line on the PCB to form a one or two pole low pass filter. This filter should significantly reduce noise radiated by attenuating the high frequency harmonics on the signal line. The filter can also be used to attenuate the signal level so that it is only as large as required by the MPU clock input. To further reduce radiated noise, the PCB signal trace length should be kept to a minimum. Volume Control Programming The volume control adjustable gain block can be programmed in 2 dB gain steps from –14 dB to +16 dB. The power–up default value for the MC13110A/B and MC13111A/B is 0 dB. (see Figure 123) Figure 123. Volume Control Volume Control Bit #3 Volume Control Bit #2 Volume Control Bit #1 Volume Control Bit #0 Volume Control # Gain/Attenuation Amount 0 0 0 0 0 –14 dB 0 0 0 1 1 –12 dB 0 0 1 0 2 –10 dB 0 0 1 1 3 –8 dB 0 1 0 0 4 –6 dB 0 1 0 1 5 –4 dB 0 1 1 0 6 –2 dB 0 1 1 1 7 0 dB 1 0 0 0 8 2 dB 1 0 0 1 9 4 dB 1 0 1 0 10 6 dB 1 0 1 1 11 8 dB 1 1 0 0 12 10 dB 1 1 0 1 13 12 dB 1 1 1 0 14 14 dB 1 1 1 1 15 16 dB |
Similar Part No. - MC13110A |
|
Similar Description - MC13110A |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
