Denon UTP-250 - Page 35

Signals sent to the LM7000 Programmable Divider
a. Signals to the programmable divider are sent from 3 sources: CE OUT, CLOCK OUT, and DATA OUT.
b. The programmable divider takes in DATA at CLOCK ae , when CE equals 1.
c. The data is a 24-bit serial signal which is taken in to the programmable divider from the LSB.
(At the AM setting, Dp through D3 are ignored, so that D, becomes the LSB.)
d. The data is made up of the number of frequency divisions data, the band data, and the comparison frequency data. (See diagram below.)
Number of frequency divisions data
| Comparison tequeney| Ro| Ri | Re| | S|
ee ee ee
e. Timing for sending
a= 2.5 «sec
CL
DATA
ieee ——
Programmable
divider internal data ~ ~~ 7 TTT Spee a. can
D-250
TUNER PRE SECTION
Description of Key and Selection Switch Inputs
TAPE MONI Pressing this button selects whether the tape monitor is on or off.
%* When the tape monitor is on, TAPE MONI OUT1 is high.
% When the tape monitor is off, TAPE MONI OUT1 is low.
FREQ UP
FREQ, DOWN
BAND This function operates cyclicly to command switching to the FM, AM (MW), and LW reception modes.
During FM reception this function commands switching of the reception mode to the stereo/mono auto
mode and the forced mono mode. ;
SDB Pressing this button selects whether SDB is on or off.
With SDB on, high level is output.
With SDB off, low level is output.
7 CLEAR
setting mode.
8 TIMER
A one-course setting is possible.
9 ENTER/NEXT This function is used to advance to the next step during the clock setting or the setting of the timer.
10 POWER This is the RELAY OUT button which switches on and off the power of the other system components.
ll STAND BY
2
i} MEMORY
%In the tuner mode, this function shifts the reception frequency upwards in steps of 1.
After the button has been depressed for 0.5 seconds or longer, the frequency changes continuously, then
from the point at which the button is released the tuner enters the auto tuning mode.
Pressing the button again will set the step operation.
%*In the tuner mode, this function shifts the reception frequency downwards in steps of 1.
After the button has been depressed for 0.5 seconds or longer, the frequency changes continuously, then
from the point at which the button is released the tuner enters the auto tuning mode.
Pressing the button again will set the step operation.
This function commands a clearing of the timer setting contents.
When you would like the timer to operate only once at the set time, this button causes a shift to this
Pressing this button selects whether the timer operation is on or off.
When timer operation is desired, pressing this button causes the standby mark in the LCD to light.
%* During the tuner mode, this function causes a shift to the mode in which the station currently
being received is registered in the preset memory.
The “MEMORY” indication will flash and registration will be achieved when the P1—P10 and P+10
buttons are pressed.
13 FUNC This function operates cyclicly to switch the function of the amplifier.
14 DISPLAY This function switches the time display and the mode display.