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IC, LC72131D
eee eee
ee
A crystal oscillator (7.2MHz) is connected between these pins.
a
Pe
lm
ie
Digital data input from CPU (M38B57MC-P218FP / M38B57MCH-P226F)
~ fo)
CG
sj
when relevant key is operated. Active "H".
ee
ee
ae
Digital data output to CPU (M38B57MC-P218FP / M38B57MCH-P226F)
T-BASE
| 0 |
Outputs a reference clock signal (8Hz) for the clock.
i. cae ll MONO / BEAT
| 0 | Outputs "H" when MONO / BEAT is switched.
_ Output "L" or "H" as follows:
2 BAND
3 BAND
3 BAND
Outputs "L" or "H" as follows:
2 BAND
3 BAND
3 BAND
| 3BAND
[ore
[0 [eccrine
SCSCSC~*Y
[ef
EN [1 | Get puccomerinnt
|
1300 |
TONE
[so
Receives "L" when station is tuned.
A OS
SS
Ts [ eT
Ree
reeset
SE
a
ae
peau fo |
OO
The MOS transistor for PLL active low pass filter.
~55~
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