Sony ICF-C733 - Page 11

4-4. IC PIN FUNCTIONS
¢ IC2 ( 1 PD1724GB-648-1P7)
INITIALIZE
LW TVH
KEY SCAN
KEY RET
Initialize output.
Band output. Low : LW, High : MW
Conducts Key Scan. (pin @ : Not in use.)
Key Return input. (pin® : Not in use.)
Terminated to initialize.
48 | K3 — KO
45 —
4
5
[Signal Name _|
mn [Nc [- «4d ‘| nwinwe SS OCOCSCSCSOSOOSOCOCOCSC“‘C“CSCSCS
Lees
Ee Pin for doubler circuit capacitor connection to develop LCD drive voltage.
Audio signal mute. Active : Low. LOW when MUTE ON.
19 VDP MUTE | |
~—- MUTE —>|
| 20 [core Beer | O_| Activates buzzer
po tNC = =| Terminated to VoD
| 2 |vp $|[- | =| 3V power supply input terminal.
25 Saat eee a NES
| 24 |vcom | rMvco |__| FM VCO input
| 25 | veo. | AMvco | ot | AMVCOimut
a ae Eee Em
Poa feo =| Notin se
| 28 [poe = |_| PLL error output
safe fe fe Detects power supply line status.
29 CE CE Power supply line OFF : Low
Power supply line ON : High
| 30 [xo xour 0 Crystal oscillator connection terminal. (75kHz)
EO ET
a2] vst | —_| Pinforregltor crit apactor connection tan sabe dive volge of the oiler
PA3 PACD... (sar. Terminated to VDD
[se [rar —sdfarMour | 0 [Nome SOSC~C—CSSC‘“S*s~*Y
fas | pao | BATHFMAM | _O | BANDoutput_Low: FM High: AM
41—44| PC3 — PCO |KEYSCAN | O |
: |KEYRET |
eee
psoo tne | Notin use
[si ~s6| uebi6-Lepi1| Lepis—Lepi |__| LeD drive